THS4509 [NSC]

WIDEBAND, LOW-NOISE, LOW-DISTORTION, FULLY-DIFFERENTIAL AMPLIFIER;
THS4509
型号: THS4509
厂家: National Semiconductor    National Semiconductor
描述:

WIDEBAND, LOW-NOISE, LOW-DISTORTION, FULLY-DIFFERENTIAL AMPLIFIER

放大器
文件: 总42页 (文件大小:1847K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
THS4509  
www.ti.com  
SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
WIDEBAND, LOW-NOISE, LOW-DISTORTION, FULLY-DIFFERENTIAL AMPLIFIER  
Check for Samples: THS4509  
1
FEATURES  
DESCRIPTION  
23  
Fully-Differential Architecture  
Centered Input Common-Mode Range  
Output Common-Mode Control  
Minimum Gain of 2 V/V (6 dB)  
Bandwidth: 1900 MHz  
The THS4509 is a wideband, fully-differential op amp  
designed for 5-V data acquisition systems. It has a  
low noise at 1.9 nV/Hz, and low harmonic distortion  
of –75 dBc HD2 and –80 dBc HD3 at 100 MHz with  
2 VPP, G = 10 dB, and 1 kload. Slew rate is high at  
6600 V/μs, and with settling time of 2 ns to 1% (2-V  
step), it is ideal for pulsed applications. It is designed  
for a minimum gain of 6 dB, but is optimized for gains  
of 10 dB.  
Slew Rate: 6600 V/μs  
1% Settling Time: 2 ns  
HD2: –75 dBc at 100 MHz  
HD3: –80 dBc at 100 MHz  
To allow for dc coupling to analog-to-digital  
converters (ADCs), its unique output common-mode  
control circuit maintains the output common-mode  
voltage within 3-mV offset (typ) from the set voltage,  
when set within 0.5-V of midsupply, with less than  
4-mV differential offset voltage. The common-mode  
set point is set to midsupply by internal circuitry,  
which may be overdriven from an external source.  
OIP3: 37 dBm at 70 MHz  
Input Voltage Noise: 1.9 nV/Hz (f > 10 MHz)  
Power-Supply Voltage: 3 V to 5 V  
Power-Supply Current: 37.7 mA  
Power-Down Current: 0.65 mA  
APPLICATIONS  
The input and output are optimized for best  
performance with the common-mode voltages set to  
midsupply. Along with high performance at low  
power-supply voltage, this design makes it ideal for  
high-performance, single-supply 5-V data acquisition  
systems. The combined performance of the THS4509  
in a gain of 10 dB driving the ADS5500 ADC,  
sampling at 125 MSPS, is 81-dBc SFDR and  
69.1-dBc SNR with a –1 dBFS signal at 70 MHz.  
5-V Data Acquisition Systems High  
Linearity ADC Amplifiers  
Wireless Communication  
Medical Imaging  
Test and Measurement  
250 W  
Mini-Circuits  
ADT2-1T  
1:1.4  
Mini-Circuits  
ADT2-1T  
1:1.4  
+VS = 5 V  
10 nF  
50 W  
VIN  
VOUT  
+
The THS4509 is offered in a quad, leadless QFN-16  
package (RGT), and is characterized for operation  
over the full industrial temperature range from –40°C  
to +85°C.  
953 W  
VCM  
THS4509  
-
10 nF  
50 W  
0.1 mF  
250 W  
VOUT  
Measured 3rd Order Intermodulation  
Spurious Signal Level  
-60  
= 20 dB  
VIN  
RELATED PRODUCTS  
-70  
-80  
-90  
COMMON-MODE RANGE OF  
DEVICE  
THS4508  
THS4509  
THS4511  
THS4513  
MIN. GAIN INPUT(1)  
6 dB  
6 dB  
0 dB  
0 dB  
–0.3 V to 2.3 V  
-100  
1.1 V to 3.9 V  
–0.3 V to 2.3 V  
1.1 V to 3.9 V  
-110  
-120  
0
50  
100  
150  
200  
250  
f - Frequency - MHz  
1. Assumes a 5-V single-ended power supply.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
3
PowerPAD is a trademark of Texas Instruments Incorporated.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2005–2009, Texas Instruments Incorporated  
 
 
THS4509  
SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
www.ti.com  
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with  
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.  
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more  
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.  
PACKAGING/ORDERING INFORMATION(1)  
PACKAGED DEVICES  
QUAD QFN(2) (3)  
TEMPERATURE  
SYMBOL  
(RGT-16)  
THS4509RGTT  
–40°C to +85°C  
THS4509RGTR  
(1) For the most current package and ordering information see the Package Option Addendum at the end  
of this document, or see the TI web site at www.ti.com.  
(2) This package is available taped and reeled. The R suffix standard quantity is 3000. The T suffix  
standard quantity is 250.  
(3) The exposed thermal pad is electrically isolated from all other pins.  
ABSOLUTE MAXIMUM RATINGS(1)  
Over operating free-air temperature range, unless otherwise noted.  
UNIT  
VS– to VS+  
Supply voltage  
6 V  
VI  
Input voltage  
±VS  
4 V  
VID  
IO  
Differential input voltage  
Output current(2)  
200 mA  
Continuous power dissipation  
Maximum junction temperature  
Operating free-air temperature range  
Storage temperature range  
HBM  
See Dissipation Rating Table  
+150°C  
TJ  
TA  
–40°C to +85°C  
–65°C to +150°C  
2000 V  
Tstg  
ESD ratings  
CDM  
MM  
1500 V  
100 V  
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may  
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond  
those specified is not implied.  
(2) The THS4509 incorporates a (QFN) exposed thermal pad on the underside of the chip. This pad acts as a heatsink and must be  
connected to a thermally dissipative plane for proper power dissipation. Failure to do so may result in exceeding the maximum junction  
temperature which could permanently damage the device. See TI technical briefs SLMA002 and SLMA004 for more information about  
using the QFN thermally-enhanced package.  
DISSIPATION RATINGS TABLE  
POWER RATING  
PACKAGE  
θJC  
θJA  
TA +25°C  
TA = +85°C  
RGT (16)  
2.4°C/W  
39.5°C/W  
2.3 W  
225 mW  
2
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Copyright © 2005–2009, Texas Instruments Incorporated  
Product Folder Link(s): THS4509  
 
 
THS4509  
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SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
DEVICE INFORMATION  
TOP VIEW  
RGT Package  
THS4509  
V
S−  
16  
15  
14  
13  
NC  
PD  
1
2
3
4
12  
11  
10  
9
V
IN−  
V
IN+  
V
V
OUT−  
OUT+  
CM  
CM  
6
7
5
8
V
S+  
TERMINAL FUNCTIONS  
TERMINAL  
(RGT PACKAGE)  
DESCRIPTION  
NO.  
NAME  
NC  
1
No internal connection  
2
VIN–  
VOUT+  
CM  
Inverting amplifier input  
3
Noninverting amplifier output  
Common-mode voltage input  
Positive amplifier power-supply input  
Inverted amplifier output  
4, 9  
5-8  
10  
11  
12  
VS+  
VOUT–  
VIN+  
PD  
Noninverting amplifier input  
Power-down; PD = logic low puts part into low power mode, PD = logic high or open for normal operation  
Negative amplifier power-supply input  
13-16  
VS–  
Copyright © 2005–2009, Texas Instruments Incorporated  
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THS4509  
SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
www.ti.com  
ELECTRICAL CHARACTERISTICS: VS+ – VS– = 5 V  
Test conditions are at VS+ = +2.5 V, VS– = –2.5 V, G = 10 dB, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential,  
TA = +25°C, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted.  
THS4509  
TEST  
PARAMETER  
AC PERFORMANCE  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
LEVEL(1)  
G = 6 dB, VO = 100 mVPP  
2.0  
1.9  
GHz  
GHz  
MHz  
MHz  
GHz  
MHz  
GHz  
V/μs  
G = 10 dB, VO = 100 mVPP  
G = 14 dB, VO = 100 mVPP  
G = 20 dB, VO = 100 mVPP  
G = 20 dB  
Small-signal bandwidth  
600  
275  
3
Gain-bandwidth product  
Bandwidth for 0.1-dB flatness  
Large-signal bandwidth  
Slew rate (differential)  
Rise time  
G = 10 dB, VO = 2 VPP  
G = 10 dB, VO = 2 VPP  
300  
1.5  
6600  
0.5  
Fall time  
2-V step  
0.5  
ns  
Settling time to 1%  
Settling time to 0.1%  
2
10  
f = 10 MHz  
f = 50 MHz  
f = 100 MHz  
f = 10 MHz  
f = 50 MHz  
f = 100 MHz  
–104  
–80  
–68  
–108  
–92  
–81  
–78  
–64  
–95  
–78  
78  
2nd-order harmonic distortion  
3rd-order harmonic distortion  
dBc  
dBc  
C
fC = 70 MHz  
fC = 140 MHz  
fC = 70 MHz  
fC = 140 MHz  
fC = 70 MHz  
fC = 140 MHz  
fC = 70 MHz  
fC = 140 MHz  
2nd-order intermodulation distortion  
3rd-order intermodulation distortion  
2nd-order output intercept point  
3rd-order output intercept point  
1-dB compression point  
200-kHz tone spacing,  
RL = 499 Ω  
dBc  
200-kHz tone spacing  
RL = 100 , referenced  
to 50-output  
58  
dBm  
dBm  
43  
38  
fC = 70 MHz  
12.2  
10.8  
17.1  
1.9  
fC = 140 MHz  
50 system, 10 MHz  
f > 10 MHz  
Noise figure  
dB  
Input voltage noise  
Input current noise  
DC PERFORMANCE  
nV/Hz  
pA/Hz  
f > 10 MHz  
2.2  
Open-loop voltage gain (AOL  
)
68  
1
dB  
mV  
C
A
B
A
B
A
B
TA = +25°C  
4
5
Input offset voltage  
TA = –40°C to +85°C  
TA = –40°C to +85°C  
TA = +25°C  
1
mV  
Average offset voltage drift  
Input bias current  
Average bias current drift  
Input offset current  
Average offset current drift  
2.6  
8
μV/°C  
15.5  
18.5  
μA  
nA/°C  
μA  
TA = –40°C to +85°C  
TA = –40°C to +85°C  
TA = +25°C  
8
20  
1.6  
1.6  
4
3.6  
7
TA = –40°C to +85°C  
TA = –40°C to +85°C  
nA/°C  
(1) Test levels: (A) 100% tested at +25°C. Over-temperature limits by characterization and simulation. (B) Limits set by characterization and  
simulation. (C) Typical value only for information.  
4
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Product Folder Link(s): THS4509  
 
THS4509  
www.ti.com  
SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
ELECTRICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued)  
Test conditions are at VS+ = +2.5 V, VS– = –2.5 V, G = 10 dB, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential,  
TA = +25°C, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted.  
THS4509  
TEST  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
LEVEL(1)  
INPUT  
Common-mode input range high  
Common-mode input range low  
Common-mode rejection ratio  
Differential input impedance  
Common-mode input impedance  
OUTPUT  
1.4  
–1.4  
90  
V
B
dB  
1.3 || 1.8  
1.0 || 2.3  
M|| pF  
M|| pF  
C
C
TA = +25°C  
1.2  
1.1  
1.4  
Maximum output voltage high  
V
TA = –40°C to +85°C  
TA = +25°C  
1.4  
–1.4  
–1.4  
5.6  
Each output with 100 Ω  
to midsupply  
–1.2  
–1.1  
A
C
Minimum output voltage low  
V
V
TA = –40°C to +85°C  
Differential output voltage swing  
4.8  
4.4  
TA = –40°C to +85°C  
RL = 10 Ω  
Differential output current drive  
Output balance error  
96  
–49  
0.3  
mA  
dB  
VO = 100 mV, f = 1 MHz  
f = 1 MHz  
Closed-loop output impedance  
OUTPUT COMMON-MODE VOLTAGE CONTROL  
Small-signal bandwidth  
Slew rate  
700  
110  
1
MHz  
V/μs  
V/V  
Gain  
Output common-mode offset  
from CM input  
1.25 V < CM < 3.5 V  
5
mV  
C
CM input bias current  
CM input voltage range  
CM input impedance  
CM default voltage  
POWER SUPPLY  
1.25 V < CM < 3.5 V  
±40  
–1.5 to 1.5  
23 || 1  
μA  
V
k|| pF  
V
0
Specified operating voltage  
3
5
37.7  
37.7  
37.7  
37.7  
90  
5.25  
40.9  
41.9  
V
C
A
C
TA = +25°C  
Maximum quiescent current  
Minimum quiescent current  
mA  
TA = –40°C to +85°C  
TA = +25°C  
34.5  
33.5  
mA  
dB  
TA = –40°C to +85°C  
Power-supply rejection (±PSRR)  
POWER-DOWN  
Referenced to VS–  
Enable voltage threshold  
Disable voltage threshold  
Assured on above 2.1 V + VS–  
Assured off below 0.7 V + VS–  
TA = +25°C  
> 2.1 + VS–  
< 0.7 + VS–  
0.65  
V
V
C
A
0.9  
1
Power-down quiescent current  
mA  
TA = –40°C to +85°C  
PD = VS–  
0.65  
Input bias current  
Input impedance  
Turn-on time delay  
Turn-off time delay  
100  
μA  
k|| pF  
ns  
50 || 2  
55  
C
Measured to output on  
Measured to output off  
10  
μs  
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THS4509  
SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
www.ti.com  
ELECTRICAL CHARACTERISTICS: VS+ – VS– = 3 V  
Test conditions at VS+ = +1.5 V, VS– = –1.5 V, G = 10 dB, CM = open, VO = 1 VPP, RF = 349 , RL = 200-differential,  
TA = +25°C, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted.  
THS4509  
TEST  
PARAMETER  
AC PERFORMANCE  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
LEVEL(1)  
G = 6 dB, VO = 100 mVPP  
1.9  
1.6  
GHz  
GHz  
MHz  
MHz  
GHz  
MHz  
GHz  
V/μs  
G = 10 dB, VO = 100 mVPP  
G = 14 dB, VO = 100 mVPP  
G = 20 dB, VO = 100 mVPP  
G = 20 dB  
Small-signal bandwidth  
625  
260  
3
Gain-bandwidth product  
Bandwidth for 0.1-dB flatness  
Large-signal bandwidth  
Slew rate (differential)  
Rise time  
G = 10 dB, VO = 1 VPP  
G = 10 dB, VO = 1 VPP  
400  
1.5  
3500  
0.25  
0.25  
1
Fall time  
2-V step  
ns  
Settling time to 1%  
Settling time to 0.1%  
10  
f = 10 MHz  
f = 50 MHz  
f = 100 MHz  
f = 10 MHz  
f = 50 MHz  
f = 100 MHz  
–107  
–83  
–60  
–87  
–65  
–54  
–77  
–54  
–77  
–62  
72  
2nd-order harmonic distortion  
3rd-order harmonic distortion  
dBc  
dBc  
C
fC = 70 MHz  
fC = 140 MHz  
fC = 70 MHz  
fC = 140 MHz  
fC = 70 MHz  
fC = 140 MHz  
fC = 70 MHz  
fC = 140 MHz  
2nd-order intermodulation distortion  
3rd-order intermodulation distortion  
2nd-order output intercept point  
3rd-order output intercept point  
1-dB compression point  
200-kHz tone spacing,  
RL = 499 Ω  
dBc  
52  
200-kHz tone spacing  
RL = 100 Ω  
dBm  
dBm  
38.5  
30  
fC = 70 MHz  
2.2  
fC = 140 MHz  
50 system, 10 MHz  
f > 10 MHz  
0.25  
17.1  
1.9  
Noise figure  
dB  
Input voltage noise  
Input current noise  
DC PERFORMANCE  
nV/Hz  
pA/Hz  
f > 10 MHz  
2.2  
Open-loop voltage gain (AOL  
)
68  
1
dB  
mV  
Input offset voltage  
TA = +25°C  
Average offset voltage drift  
Input bias current  
Average bias current drift  
Input offset current  
Average offset current drift  
TA = –40°C to +85°C  
TA = +25°C  
2.6  
6
μV/°C  
μA  
C
TA = –40°C to +85°C  
TA = +25°C  
20  
1.6  
4
nA/°C  
μA  
TA = –40°C to +85°C  
nA/°C  
(1) Test levels: (A) 100% tested at +25°C. Over-temperature limits by characterization and simulation. (B) Limits set by characterization and  
simulation. (C) Typical value only for information.  
6
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Copyright © 2005–2009, Texas Instruments Incorporated  
Product Folder Link(s): THS4509  
 
THS4509  
www.ti.com  
SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
ELECTRICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued)  
Test conditions at VS+ = +1.5 V, VS– = –1.5 V, G = 10 dB, CM = open, VO = 1 VPP, RF = 349 , RL = 200-differential,  
TA = +25°C, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted.  
THS4509  
TEST  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
LEVEL(1)  
INPUT  
Common-mode input range high  
Common-mode input range low  
Common-mode rejection ratio  
Differential input impedance  
Common-mode input impedance  
OUTPUT  
0.4  
–0.4  
80  
V
B
dB  
1.3 || 1.8  
1.0 || 2.3  
M|| pF  
M|| pF  
C
C
Maximum output voltage high  
Minimum output voltage low  
Differential output voltage swing  
Differential output current drive  
Output balance error  
TA = +25°C  
TA = +25°C  
0.45  
V
V
Each output with 100 Ω  
to midsupply  
–0.45  
1.8  
V
C
RL = 10 Ω  
50  
mA  
dB  
VO = 100 mV, f = 1 MHz  
f = 1 MHz  
–49  
0.3  
Closed-loop output impedance  
OUTPUT COMMON-MODE VOLTAGE CONTROL  
Small-signal bandwidth  
Slew rate  
570  
60  
1
MHz  
V/μs  
V/V  
Gain  
Output common-mode offset  
from CM input  
1.25 V < CM < 3.5 V  
4
mV  
C
CM input bias current  
CM input voltage range  
CM input impedance  
CM default voltage  
1.25 V < CM < 3.5 V  
±40  
–1.5 to 1.5  
20 || 1  
μA  
V
k|| pF  
V
0
POWER SUPPLY  
Specified operating voltage  
Quiescent current  
3
34.8  
70  
V
C
A
C
TA = +25°C  
mA  
dB  
Power-supply rejection (±PSRR)  
POWER-DOWN  
Referenced to VS–  
Enable voltage threshold  
Disable voltage threshold  
Power-down quiescent current  
Input bias current  
Assured on above 2.1 V + VS–  
Assured off below 0.7 V + VS–  
> 2.1 + VS–  
< 0.7 + VS-  
0.46  
V
V
mA  
μA  
PD = VS–  
65  
C
Input impedance  
50 || 2  
100  
k|| pF  
ns  
Turn-on time delay  
Measured to output on  
Measured to output off  
Turn-off time delay  
10  
μs  
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THS4509  
SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
www.ti.com  
TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V  
Small-Signal Frequency Response  
Large-Signal Frequency Response  
HD2, G = 6 dB, VOD = 2 VPP  
HD3, G = 6 dB, VOD = 2 VPP  
HD2, G = 10 dB, VOD = 2 VPP  
HD3, G = 10 dB, VOD = 2 VPP  
Figure 1  
Figure 2  
Figure 3  
vs Frequency  
vs Frequency  
Figure 4  
vs Frequency  
Figure 5  
vs Frequency  
Figure 6  
HD2, G = 14 dB, VOD = 2 VPP  
HD3, G = 14 dB, VOD = 2 VPP  
HD2, G = 10 dB  
vs Frequency  
Figure 7  
Harmonic  
Distortion  
vs Frequency  
Figure 8  
vs Output Voltage  
vs Output Voltage  
vs Common-Mode Input Voltage  
vs Common-Mode Input Voltage  
vs Frequency  
Figure 9  
HD3, G = 10 dB  
Figure 10  
Figure 11  
Figure 12  
Figure 13  
Figure 14  
Figure 15  
Figure 16  
Figure 17  
Figure 18  
Figure 19  
Figure 20  
Figure 21  
Figure 22  
Figure 23  
Figure 24  
Figure 25  
Figure 26  
Figure 27  
Figure 28  
Figure 29  
Figure 30  
Figure 31  
Figure 32  
Figure 33  
Figure 34  
Figure 35  
Figure 36  
Figure 37  
Figure 38  
Figure 39  
Figure 40  
Figure 41  
Figure 42  
Figure 43  
HD2, G = 10 dB  
HD3, G = 10 dB  
IMD2, G = 6 dB, VOD = 2 VPP  
IMD3, G = 6 dB, VOD = 2 VPP  
IMD2, G = 10 dB, VOD = 2 VPP  
IMD3, G = 10 dB, VOD = 2 VPP  
IMD2, G = 14 dB, VOD = 2 VPP  
IMD3, G = 14 dB, VOD = 2 VPP  
OIP2  
vs Frequency  
vs Frequency  
Intermodulation  
Distortion  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
Output Intercept Point  
OIP3  
vs Frequency  
0.1-dB Flatness  
S-Parameters  
vs Frequency  
Transition Rate  
vs Output Voltage  
Transient Response  
Settling Time  
Rejection Ratio  
vs Frequency  
vs Frequency  
Output Impedance  
Overdrive Recovery  
Output Voltage Swing  
Turn-Off Time  
vs Load Resistance  
Turn-On Time  
Input Offset Voltage  
Open-Loop Gain  
Input-Referred Noise  
Noise Figure  
vs Input Common-Mode Voltage  
vs Frequency  
vs Frequency  
vs Frequency  
Quiescent Current  
Power-Supply Current  
Output Balance Error  
CM Input Impedance  
vs Supply Voltage  
vs Supply Voltage in Power-Down Mode  
vs Frequency  
vs Frequency  
CM Small-Signal Frequency Response  
CM Input Bias Current  
vs CM Input Voltage  
vs CM Input Voltage  
vs CM Input Voltage  
Differential Output Offset Voltage  
Output Common-Mode Offset  
8
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TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V  
Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
SMALL-SIGNAL  
FREQUENCY RESPONSE  
LARGE-SIGNAL FREQUENCY RESPONSE  
22  
22  
G = 20 dB  
V
= 100 mV  
PP  
V
= 2 V  
PP  
OD  
OD  
20  
20  
18  
G = 20 dB  
G = 14 dB  
18  
16  
16  
14  
12  
G = 14 dB  
G = 10 dB  
14  
12  
10  
G = 10 dB  
G = 6 dB  
10  
8
8
6
4
G = 6 dB  
6
4
2
2
0
0
0.1  
1
10  
100  
1000  
10000  
0.1  
1
10  
100  
1000  
10000  
f - Frequency - MHz  
f − Frequency − MHz  
Figure 1.  
Figure 2.  
HD2 vs FREQUENCY  
HD3 vs FREQUENCY  
−60  
−70  
−60  
−70  
−80  
G = 6 dB,  
= 2 V  
G = 6 dB,  
= 2 V  
V
V
OD  
PP  
OD  
PP  
= 100 W  
R
L
−80  
R
= 100 W  
L
−90  
−90  
R
= 200 W  
L
R
= 1 kW  
L
−100  
−100  
R
= 1 kW  
R
= 500 W  
L
L
−110  
−120  
−110  
−120  
R
= 200 W  
L
R
= 500 W  
L
1000  
10  
100  
1
10  
100  
1000  
1
f − Frequency − MHz  
f − Frequency − MHz  
Figure 3.  
Figure 4.  
HD2 vs FREQUENCY  
HD3 vs FREQUENCY  
−60  
−70  
−60  
−70  
−80  
G = 10 dB,  
V
G = 10 dB,  
= 2 V  
= 2 V  
PP  
V
OD  
OD  
PP  
R
= 200 W  
−80  
L
R
= 100 W  
R
= 500 W  
L
L
−90  
−90  
R
L
= 1 kW  
−100  
−100  
R
= 1 kW  
L
R
= 100 W  
L
−110  
−120  
−110  
−120  
R
= 200 W  
R
= 500 W  
L
L
1000  
1
10  
100  
f − Frequency − MHz  
1
10  
100  
1000  
f − Frequency − MHz  
Figure 5.  
Figure 6.  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued)  
Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
HD2 vs FREQUENCY  
HD3 vs FREQUENCY  
−60  
−70  
−60  
−70  
−80  
G = 14 dB,  
V
G = 14 dB,  
= 2 V  
= 2 V  
PP  
OD  
V
OD  
PP  
R
= 100 W  
L
−80  
R
= 200 W  
L
R
= 100 W  
L
R
= 500 W  
L
−90  
−90  
R
= 1 kW  
L
−100  
−100  
R
= 200 W  
L
−110  
−120  
−110  
−120  
R
L
= 500 W  
R
= 1 kW  
L
1
10  
100  
1000  
1
10  
100  
1000  
f − Frequency − MHz  
f − Frequency − MHz  
Figure 7.  
Figure 8.  
HD2 vs OUTPUT VOLTAGE  
HD3 vs OUTPUT VOLTAGE  
f = 64 MHz  
-60  
-70  
-80  
-90  
-60  
-70  
-80  
f = 32 MHz  
f = 64 MHz  
f = 32 MHz  
f = 8 MHz  
-90  
f = 16 MHz  
-100  
-100  
-110  
-120  
f = 8 MHz  
-110  
f = 16 MHz  
-120  
4
0
1
3
2
0
1
2
- V  
3
4
V
- V  
OD  
PP  
V
OD  
PP  
Figure 9.  
Figure 10.  
HD2 vs COMMON-MODE OUTPUT VOLTAGE  
HD3 vs COMMON-MODE OUTPUT VOLTAGE  
0
-20  
V
V
= -1 V to 1 V  
CM  
OD  
V
V
= -1 V to 1 V  
CM  
-30  
-40  
-50  
-60  
-70  
= 2 V  
PP  
= 2 V  
PP  
OD  
-20  
-40  
G = 10 dB  
= 200 W  
G = 10 dB  
= 200 W  
R
L
R
L
150 MHz  
150 MHz  
-60  
100 MHz  
64 MHz  
100 MHz  
64 MHz  
32 MHz  
-80  
-90  
-80  
32 MHz  
-100  
-110  
-120  
16 MHz  
-100  
-120  
1 MHz  
4 MHz  
0.2 0.4 0.6 0.8  
16 MHz  
1 MHz  
0.2 0.4 0.6 0.8  
4 MHz  
-1  
-0.8 -0.6 -0.4 -0.2  
0
1
-1 -0.8 -0.6 -0.4 -0.2  
0
1
V
− Common-Mode Output Voltage − V  
V
− Common-Mode Output Voltage − V  
IC  
IC  
Figure 11.  
Figure 12.  
10  
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SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued)  
Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
IMD2 vs FREQUENCY  
IMD3 vs FREQUENCY  
-60  
-30  
-40  
-50  
-60  
-70  
-80  
-90  
-100  
Gain = 6 dB,  
VOD = 2 VPP Envelope  
Gain = 6 dB,  
VOD = 2 VPP Envelope  
RL = 100 W  
RL = 200 W  
-65  
-70  
-75  
-80  
-85  
-90  
-95  
-100  
RL = 200 W  
RL = 1 kW  
RL = 100 W  
RL = 500 W  
RL = 1 kW  
RL = 500 W  
0
100  
f - Frequency - MHz  
150  
200  
50  
0
50  
100  
150  
200  
f - Frequency - MHz  
Figure 13.  
Figure 14.  
IMD2 vs FREQUENCY  
IMD3 vs FREQUENCY  
-60  
-65  
-70  
-75  
-80  
-85  
-90  
-30  
-40  
-50  
-60  
Gain = 10 dB,  
VOD = 2 VPP Envelope  
Gain = 10 dB,  
V
R
= 100 W  
L
= 2 V Envelope  
PP  
OD  
RL = 200 W  
RL = 100 W  
R
L
= 200 W  
-70  
-80  
RL = 500 W  
R
= 1 kW  
L
RL = 1 kW  
R
= 500 W  
-90  
L
-95  
-100  
-100  
0
50  
100  
150  
200  
0
50  
100  
150  
200  
F - Frequency - MHz  
f - Frequency - MHz  
Figure 15.  
Figure 16.  
IMD2 vs FREQUENCY  
IMD3 vs FREQUENCY  
−30  
−60  
−65  
−70  
−75  
−80  
Gain = 14 dB,  
= 2 V  
R
= 100 W  
L
Gain = 14 dB  
= 2 V  
V
Envelope  
PP  
CO  
−40  
−50  
−60  
−70  
V
Envelope  
PP  
R
= 200 W  
OD  
L
R
= 100 W  
R
= 200 W  
L
L
R
= 500 W  
−85  
−90  
L
−80  
−90  
R
= 1 kW  
L
R
= 1 kW  
L
−95  
R
= 500 W  
L
−100  
−100  
0
100  
150  
200  
0
50  
100  
f − Frequency − MHz  
150  
50  
200  
f − Frequency − MHz  
Figure 17.  
Figure 18.  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued)  
Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
OIP2 vs FREQUENCY  
OIP3 vs FREQUENCY  
45  
43  
90  
85  
80  
Gain = 6 dB  
Gain = 6 dB  
Gain = 14 dB  
41  
39  
37  
35  
33  
75  
Gain = 10 dB  
70  
65  
Gain = 10 dB  
60  
55  
50  
31  
29  
27  
25  
Gain = 14 dB  
45  
40  
0
50  
100  
150  
200  
0
50  
100  
150  
200  
250  
f − Frequency − MHz  
f − Frequency − MHz  
Figure 19.  
Figure 20.  
0.1-dB FLATNESS  
S-PARAMETERS vs FREQUENCY  
10.2  
0
-10  
-20  
-30  
-40  
-50  
-60  
-70  
S21  
V
= 2V  
OD  
PP  
10.1  
10  
S11  
S22  
9.9  
9.8  
S12  
1
10  
100  
1000  
0.1  
1
10  
100  
1000  
f − Frequency − MHz  
f - Frequency - MHz  
Figure 21.  
Figure 22.  
TRANSITION RATE vs OUTPUT VOLTAGE  
TRANSIENT RESPONSE  
1.5  
8000  
7000  
6000  
5000  
4000  
3000  
2000  
1
Rise  
Fall  
0.5  
V
= 2 V  
step  
OD  
0
−0.5  
−1  
1000  
0
−1.5  
0
0.5 1.0 1.5  
2.0 2.5  
3.0 3.5  
4.0  
t − Time − 500 ps/div  
VOD - Differential Output Voltage - VSTEP  
Figure 23.  
Figure 24.  
12  
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SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued)  
Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
SETTLING TIME  
REJECTION RATIO vs FREQUENCY  
5
4
3
2
1
0
100  
90  
V
=2V  
step  
OD  
PSRR−  
80  
PSRR+  
70  
60  
CMRR  
50  
40  
30  
20  
10  
0
−1  
−2  
−3  
−4  
−5  
0.01  
0.1  
1
10  
100  
1000  
t − Time − 500 ps/div  
f − Frequency − MHz  
Figure 25.  
Figure 26.  
OUTPUT IMPEDANCE vs FREQUENCY  
OVERDRIVE RECOVERY  
5
100  
1
0.8  
4
0.6  
0.4  
3
2
1
0
Input  
10  
Output  
0.2  
0
−0.2  
−1  
1
−0.4  
−0.6  
−2  
−3  
−4  
−5  
−0.8  
−1  
0.1  
0.1  
1
10  
100  
1000  
t − Time − 200 ns/div  
f − Frequency− MHz  
Figure 27.  
Figure 28.  
OUTPUT VOLTAGE SWING vs LOAD RESISTANCE  
TURN-OFF TIME  
2
7
5
4
6
5
4
3
1.6  
1.2  
0.8  
Output  
3
2
PD  
2
0.4  
0
1
0
1
0
10  
100  
1000  
t − Time − 2 ms/div  
RL - Load Resistance - W  
Figure 29.  
Figure 30.  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued)  
Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
INPUT OFFSET VOLTAGE vs  
TURN-ON TIME  
INPUT COMMON-MODE VOLTAGE  
5
4
3
2
40  
35  
30  
25  
20  
15  
10  
5
2
1.6  
1.2  
PD  
0.8  
Output  
1
0
0.4  
0
0
−5  
2.5  
−2.5 −2 −1.5 −1 −0.5  
0
0.5  
1
1.5  
2
t − Time − 50 ns/div  
Input Common-Mode Voltage − V  
Figure 31.  
Figure 32.  
OPEN-LOOP GAIN AND PHASE vs FREQUENCY  
INPUT-REFERRED NOISE vs FREQUENCY  
1000  
90  
40  
80  
70  
60  
50  
40  
30  
20  
10  
0
10  
-20  
-50  
-80  
-110  
-140  
-170  
100  
Gain  
Phase  
In  
10  
Vn  
-200  
-230  
1
1 k  
f − Frequency − Hz  
10  
100  
10 k  
10 M  
100 k  
1 M  
1
100  
10 k  
1 M  
100 M  
10 G  
f − Frequency − Hz  
Figure 33.  
Figure 34.  
NOISE FIGURE vs FREQUENCY  
QUIESCENT CURRENT vs SUPPLY VOLTAGE  
20  
40  
T
= 25°C  
19  
18  
A
50 - W System  
Gain = 6 dB  
T
= -40°C  
A
17  
16  
35  
30  
25  
1.35  
V
Gain = 10 dB  
Gain = 14 dB  
Gain = 20 dB  
T
= 85°C  
A
15  
14  
13  
12  
11  
10  
0
50  
100  
f − Frequency − MHz  
150  
200  
1
1.5  
2
2.5  
V
- Supply Voltage - V  
S
Figure 35.  
Figure 36.  
14  
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SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued)  
Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
POWER-SUPPLY CURRENT vs SUPPLY VOLTAGE IN  
POWER-DOWN MODE  
OUTPUT BALANCE ERROR vs FREQUENCY  
800  
700  
10  
°
= 85 C  
T
A
0
°
= 25 C  
T
A
600  
500  
400  
300  
200  
100  
0
−10  
−20  
°
C
= −40  
T
A
−30  
−40  
−50  
−60  
1000  
0
0.5  
1
1.5  
2
2.5  
0.1  
1
10  
100  
f − Frequency − MHz  
− Supply Voltage −  
V
V
S
Figure 37.  
Figure 38.  
CM INPUT IMPEDANCE vs FREQUENCY  
CM SMALL-SIGNAL FREQUENCY RESPONSE  
1
100  
100 mVPP  
0
-1  
-2  
10  
-3  
-4  
1
-5  
-6  
-7  
0.1  
-8  
-9  
0.01  
-10  
0.1  
1
10  
100  
1000  
0.1  
1
10  
100  
1000  
f − Frequency − MHz  
f − Frequency − MHz  
Figure 39.  
Figure 40.  
DIFFERENTIAL OUTPUT OFFSET VOLTAGE vs  
CM INPUT BIAS CURRENT vs CM INPUT VOLTAGE  
CM INPUT VOLTAGE  
5
300  
4
3
2
1
200  
100  
0
−100  
−200  
−300  
0
−1  
−2.5 −2 −1.5 −1 −0.5  
0
0.5  
1
1.5  
2
2.5  
−2.5 −2 −1.5 −1 −0.5  
0
0.5  
1
1.5  
2
2.5  
CM Input Voltage − V  
CM Input V  
oltage − V  
Figure 41.  
Figure 42.  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued)  
Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
OUTPUT COMMON-MODE OFFSET vs  
CM INPUT VOLTAGE  
50  
40  
30  
20  
10  
0
−10  
−20  
−30  
−40  
−50  
2
−2.5  
−2 −1.5  
−1  
0
1
1.5  
2.5  
−0.5  
0.5  
CM Input Voltage − V  
Figure 43.  
16  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V  
Small-Signal Frequency Response  
Large-Signal Frequency Response  
HD2, G = 6 dB, VOD = 1 VPP  
Figure 44  
Figure 45  
vs Frequency  
Figure 46  
Figure 47  
Figure 48  
Figure 49  
Figure 50  
Figure 51  
Figure 52  
Figure 53  
Figure 54  
Figure 55  
Figure 56  
Figure 57  
Figure 58  
Figure 59  
Figure 60  
Figure 61  
Figure 62  
Figure 63  
Figure 64  
Figure 65  
Figure 66  
Figure 67  
Figure 68  
Figure 69  
Figure 70  
Figure 71  
Figure 72  
Figure 73  
Figure 74  
Figure 75  
HD3, G = 6 dB, VOD = 1 VPP  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
vs Frequency  
HD2, G = 10 dB, VOD = 1 VPP  
HD3, G = 10 dB, VOD = 1 VPP  
HD2, G = 14 dB, VOD = 1 VPP  
HD3, G = 14 dB, VOD = 1 VPP  
IMD2, G = 6 dB, VOD = 1 VPP  
IMD3, G = 6 dB, VOD = 1 VPP  
IMD2, G = 10 dB, VOD = 1 VPP  
IMD3, G = 10 dB, VOD = 1 VPP  
IMD2, G = 14 dB, VOD = 1 VPP  
IMD3, G = 14 dB, VOD = 1 VPP  
OIP2  
Harmonic  
Distortion  
Intermodulation  
Distortion  
Output Intercept Point  
OIP3  
0.1 dB Flatness  
S-Parameters  
vs Frequency  
Transition Rate  
vs Output Voltage  
Transient Response  
Settling Time  
Output Voltage Swing  
Rejection Ratio  
vs Load Resistance  
vs Frequency  
Overdrive Recovery  
Output Impedance  
Turn-Off Time  
vs Frequency  
Turn-On Time  
Output Balance Error  
Noise Figure  
vs Frequency  
vs Frequency  
CM Input Impedance  
Differential Output Offset Voltage  
Output Common-Mode Offset  
vs Frequency  
vs CM Input Voltage  
vs CM Input Voltage  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V  
Test conditions at VS+ = +1.5 V, VS– = –1.5 V, CM = open, VOD = 1 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
SMALL-SIGNAL FREQUENCY RESPONSE  
LARGE-SIGNAL FREQUENCY RESPONSE  
22  
20  
22  
20  
18  
16  
14  
V
= 100 mV  
PP  
OD  
V
= 1 V  
PP  
OD  
G = 20 dB  
G = 20 dB  
G = 14 dB  
18  
16  
14  
12  
10  
8
G = 14 dB  
G = 10 dB  
12  
10  
8
G = 10 dB  
G = 6 dB  
G = 6 dB  
6
4
2
0
6
4
2
0
0.1  
1
10  
100  
1000  
10000  
0.1  
1
10  
100  
1000  
10000  
f - Frequency - MHz  
f− Frequency − MHz  
Figure 44.  
Figure 45.  
HD2 vs FREQUENCY  
HD3 vs FREQUENCY  
-40  
-50  
G = 6 dB,  
VOD = 1 VPP  
G = 6 dB,  
= 1 V  
V
−40  
−50  
−60  
−70  
−80  
−90  
−100  
OD  
PP  
-60  
-70  
-80  
R
= 100 W  
L
RL = 100 W  
RL = 200 W  
-90  
R
= 200 W  
RL = 1 kW  
L
-100  
-110  
-120  
R
= 1 kW  
L
R
= 500 W  
RL = 500 W  
100  
L
1
10  
100  
1000  
1
10  
1000  
f − Frequency − MHz  
f - Frequency - MHz  
Figure 46.  
Figure 47.  
HD2 vs FREQUENCY  
HD3 vs FREQUENCY  
−40  
−40  
−50  
−60  
−70  
−80  
−90  
−100  
G = 10 dB,  
= 1 V  
G = 10 dB,  
V
C
OD  
PP  
−50  
−60  
= 1 V  
PP  
OD  
−70  
−80  
R
= 200Ω  
R
= 1 kW  
L
L
−90  
R
= 500 W  
L
−100  
R
L
= 1 kΩ  
L
R
= 200 W  
L
−110  
−120  
R
= 500 Ω  
100  
1
100  
10  
f − Frequency − MHz  
1000  
1000  
10  
1
f − Frequency − MHz  
Figure 48.  
Figure 49.  
18  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued)  
Test conditions at VS+ = +1.5 V, VS– = –1.5 V, CM = open, VOD = 1 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
HD2 vs FREQUENCY  
HD3 vs FREQUENCY  
−40  
−50  
−40  
−50  
G = 14 dB,  
= 1 V  
G = 14 dB,  
= 1 V  
OD PP  
V
V
OD  
PP  
−60  
−70  
−60  
−70  
−80  
R
= 100Ω  
R
= 100 W  
L
L
−80  
−90  
R
= 200Ω  
L
R
= 200 W  
L
−100  
R
= 500 W  
L
R
= 500  
L
−90  
−110  
−120  
R
= 1 kW  
R
= 1 k  
L
L
−100  
1
10  
100  
1000  
1
10  
100  
1000  
f − Frequency − MHz  
f − Frequency − MHz  
Figure 50.  
Figure 51.  
IMD2 vs FREQUENCY  
IMD3 vs FREQUENCY  
−30  
−40  
−50  
−30  
−40  
−50  
−60  
−70  
−80  
Gain = 6 dB,  
= 1 V  
Gain = 6 dB,  
V
R
= 500 W  
L
V
= 1 V Envelope  
PP  
OD  
PP  
OD  
R
= 1 kW  
L
R
= 100 W  
L
−60  
−70  
−80  
R
L
= 1 kW  
= 500 W  
R
= 100 W  
L
R
L
R
= 200 W  
L
−90  
−90  
R
= 200 W  
L
−100  
−100  
0
50  
100  
150  
200  
0
50  
100  
150  
200  
f − Frequency − MHz  
f − Frequency − MHz  
Figure 52.  
Figure 53.  
IMD2 vs FREQUENCY  
IMD3 vs FREQUENCY  
−30  
−40  
−50  
−60  
−70  
−80  
-30  
-40  
-50  
-60  
Gain = 10 dB,  
VOD = 1 VPP Envelope  
R
= 500 W  
L
Gain = 10 dB,  
V
= 1 V Envelope  
PP  
OD  
RL = 100 W  
R
= 1 kW  
L
R
= 100 W  
RL = 500 W  
L
-70  
-80  
RL = 1 kW  
R
= 200 W  
L
-90  
−90  
RL = 200 W  
−100  
-100  
05  
0
100  
150  
200  
0
50  
100  
150  
200  
f - Frequency - MHz  
f − Frequency − MHz  
Figure 54.  
Figure 55.  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued)  
Test conditions at VS+ = +1.5 V, VS– = –1.5 V, CM = open, VOD = 1 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
IMD2 vs FREQUENCY  
IMD3 vs FREQUENCY  
−30  
−40  
−30  
−40  
−50  
−60  
−70  
Gain = 14 dB,  
V
Gain = 14 dB,  
V
R
= 500 W  
L
= 1 V Envelope  
PP  
= 1 V Envelope  
PP  
OD  
OD  
R
= 100 W  
L
−50  
−60  
−70  
−80  
R
= 1 kW  
R
= 100 W  
L
R
L
= 500 W  
L
R
= 1 kW  
L
R
= 200 W  
L
−80  
−90  
R
= 200 W  
L
−90  
−100  
−100  
0
50  
100  
150  
200  
0
50  
100  
150  
200  
f − Frequency − MHz  
f − Frequency − MHz  
Figure 56.  
Figure 57.  
OIP2, dBm vs FREQUENCY  
OIP3, dBm vs FREQUENCY  
80  
75  
45  
40  
35  
Gain = 6 dB  
Gain = 6 dB  
Gain = 10 dB  
70  
65  
60  
55  
50  
45  
40  
Gain = 10 dB  
30  
25  
Gain = 14 dB  
Gain = 14 dB  
20  
15  
35  
30  
250  
0
50  
150  
200  
100  
150  
0
200  
50  
100  
f − Frequency − MHz  
f − Frequency − MHz  
Figure 58.  
Figure 59.  
0.1-dB FLATNESS  
S-PARAMETERS vs FREQUENCY  
10.2  
10.1  
10  
0
V
= 1 V  
PP  
S21  
OD  
-10  
-20  
-30  
S11  
S22  
-40  
-50  
-60  
-70  
9.9  
9.8  
S12  
10000  
0.1  
1
10  
100  
1000  
1
10  
100  
1000  
f − Frequency − MHz  
f = Frequency - MHz  
Figure 60.  
Figure 61.  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued)  
Test conditions at VS+ = +1.5 V, VS– = –1.5 V, CM = open, VOD = 1 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
TRANSITION RATE vs OUTPUT VOLTAGE  
TRANSIENT RESPONSE  
4000  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
3500  
Rising  
3000  
2500  
2000  
V
= 1 V  
step  
OD  
Falling  
−0.1  
−0.2  
−0.3  
−0.4  
1500  
1000  
500  
0
−0.5  
−0.6  
0.2  
1
1.2  
1.4  
0
0.4  
0.6  
− Differential Output Voltage - V  
0.8  
t − Time − 500 ps/div  
V
OD  
STEP  
Figure 62.  
Figure 63.  
SETTLING TIME  
OUTPUT VOLTAGE SWING vs LOAD RESISTANCE  
5
4
3
2
1
0
2.5  
V
= 1 V  
step  
OD  
2
1.5  
−1  
−2  
1
−3  
−4  
−5  
0.5  
0
1000  
100  
0
t − Time − 500 ps/div  
R
- Load Resistance - W  
L
Figure 64.  
Figure 65.  
REJECTION RATIO vs FREQUENCY  
OVERDRIVE RECOVERY  
90  
80  
70  
3
2.5  
2
0.6  
0.4  
0.2  
0
PSRR−  
CMRR  
Input  
1.5  
1
60  
50  
PSRR+  
0.5  
Output  
0
−0.5  
−1  
40  
30  
20  
−0.2  
−0.4  
−0.6  
−1.5  
−2  
10  
0
−2.5  
−3  
0.01  
0.1  
1
10  
100  
1000  
t − Time − 200 ns/div  
f − Frequency − MHz  
Figure 66.  
Figure 67.  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued)  
Test conditions at VS+ = +1.5 V, VS– = –1.5 V, CM = open, VOD = 1 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
OUTPUT IMPEDANCE vs FREQUENCY  
TURN-OFF TIME  
3
100  
1
0.8  
0.6  
0.4  
2.5  
2
Output  
10  
1.5  
1
PD  
1
0.2  
0
0.5  
0
0.1  
1000  
0.1  
1
10  
100  
t – Time – 2 ms/div  
f − Frequency− MHz  
Figure 68.  
Figure 69.  
TURN-ON TIME  
OUTPUT BALANCE ERROR vs FREQUENCY  
10  
3
1.2  
0
−10  
−20  
−30  
2.5  
1
PD  
2
0.8  
0.6  
0.4  
1.5  
Output  
1
−40  
−50  
−60  
0.5  
0
0.2  
0
0.1  
1
10  
100  
1000  
t − Time − 50 ns/div  
f − Frequency − MHz  
Figure 70.  
Figure 71.  
NOISE FIGURE vs FREQUENCY  
CM INPUT IMPEDANCE vs FREQUENCY  
20  
100  
19  
18  
17  
16  
15  
14  
13  
12  
50 - W System  
Gain = 6 dB  
10  
Gain = 10 dB  
Gain = 14 dB  
1
0.1  
Gain = 20 dB  
50  
11  
10  
0.01  
0
100  
150  
200  
1000  
100  
0.1  
1
10  
f − Frequency − MHz  
f − Frequency − MHz  
Figure 72.  
Figure 73.  
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TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued)  
Test conditions at VS+ = +1.5 V, VS– = –1.5 V, CM = open, VOD = 1 VPP, RF = 349 , RL = 200-differential, G = 10 dB,  
single-ended input, and input and output referenced to midrail, unless otherwise noted.  
DIFFERENTIAL OUTPUT OFFSET VOLTAGE vs  
CM INPUT VOLTAGE  
OUTPUT COMMON-MODE OFFSET vs CM INPUT VOLTAGE  
50  
5
4
3
2
1
40  
30  
20  
10  
0
−10  
−20  
−30  
−40  
−50  
0
−1  
−1.5  
−1  
−0.5  
0
0.5  
1
1.5  
−1.5  
−1  
−0.5  
0
0.5  
1
1.5  
CM Input Voltage - V  
CM Input Voltage − V  
Figure 74.  
Figure 75.  
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TEST CIRCUITS  
V
IN  
R
R
F
G
G
From  
50  
The THS4509 is tested with the following test circuits  
built on the evaluation module (EVM). For simplicity,  
power-supply decoupling is not shown—see the  
Layout Recommendations in the Applications section  
for recommendations. Depending on the test  
conditions, component values are changed per the  
following tables, or as otherwise noted. The signal  
generators used are ac-coupled, 50-sources, and a  
0.22-μF capacitor and 49.9-resistor to ground are  
inserted across RIT on the alternate input to balance  
the circuit. A split power supply is used to ease the  
interface to common test equipment, but the amplifier  
can be operated single-supply as described in the  
Applications section with no impact on performance.  
Source  
V
S+  
R
R
IT  
49.9 Ω  
49.9 Ω  
Output Measured  
Here With High  
Impedance  
100 Ω  
THS4509  
CM  
R
Differential Probe  
0.22 µF  
49.9 Ω  
Open  
0.22 µF  
IT  
V
S−  
R
F
Figure 76. Frequency Response Test Circuit  
A network analyzer is used as the signal source and  
as the measurement device. The output impedance  
of the network analyzer is 50 . RIT and RG are  
chosen to impedance match to 50 , and to maintain  
the proper gain. To balance the amplifier, a 0.22-μF  
capacitor and 49.9-resistor to ground are inserted  
across RIT on the alternate input.  
Table 1. Gain Component Values  
GAIN  
6 dB  
RF  
RG  
RIT  
348  
348 Ω  
348 Ω  
348 Ω  
165 Ω  
100 Ω  
56.2 Ω  
16.5 Ω  
61.9 Ω  
69.8 Ω  
88.7 Ω  
287 Ω  
10 dB  
14 dB  
20 dB  
The output is probed using  
a high-impedance  
differential probe across the 100-resistor. The gain  
is referred to the amplifier output by adding back the  
6-dB loss due to the voltage divider on the output.  
Note the gain setting includes 50-source  
impedance. Components are chosen to achieve  
gain and 50-input termination.  
Distortion and 1-dB Compression  
The circuit shown in Figure 77 is used to measure  
harmonic distortion, intermodulation distortion, and  
1-db compression point of the amplifier.  
Table 2. Load Component Values  
RL  
RO  
ROT  
ATTEN.  
6 dB  
100 Ω  
200 Ω  
499 Ω  
1k Ω  
25 Ω  
Open  
V
IN  
R
R
F
G
From  
50 Ω  
86.6 Ω  
237 Ω  
487 Ω  
69.8 Ω  
56.2 Ω  
52.3 Ω  
16.8 dB  
25.5 dB  
31.8 dB  
Source  
V
S+  
R
R
IT  
V
OUT  
R
R
O
To 50 Ω  
Test  
Equipment  
1:1  
R
OT  
THS 4509  
CM  
R
IT  
G
O
Note the total load includes 50-termination by  
the test equipment. Components are chosen to  
achieve load and 50-line termination through a  
1:1 transformer.  
0.22 µF  
49.9 Ω  
Open  
0.22 µF  
V
S−  
R
F
Due to the voltage divider on the output formed by  
the load component values, the amplifier output is  
attenuated. The column Atten in Table 2 shows the  
attenuation expected from the resistor divider. When  
using a transformer at the output as shown in  
Figure 77, the signal will see slightly more loss, and  
these numbers will be approximate.  
Figure 77. Distortion Test Circuit  
Frequency Response  
The circuit shown in Figure 76 is used to measure the  
frequency response of the circuit.  
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CM Input  
A signal generator is used as the signal source and  
the output is measured with a spectrum analyzer. The  
output impedance of the signal generator is 50 . RIT  
and RG are chosen to impedance-match to 50 , and  
to maintain the proper gain. To balance the amplifier,  
a 0.22-μF capacitor and 49.9-resistor to ground are  
inserted across RIT on the alternate input.  
The circuit shown in Figure 79 is used to measure the  
frequency response and input impedance of the CM  
input. Frequency response is measured single-ended  
at VOUT+ or VOUT– with the input injected at VIN, RCM  
=
0 , and RCMT = 49.9 . The input impedance is  
measured with RCM = 49.9 with RCMT = open, and  
calculated by measuring the voltage drop across RCM  
to determine the input current.  
A low-pass filter is inserted in series with the input to  
reduce harmonics generated at the signal source.  
The level of the fundamental is measured, then a  
high-pass filter is inserted at the output to reduce the  
fundamental so that it does not generate distortion in  
the input of the spectrum analyzer.  
RG  
RIT  
RF  
VS+  
0.22  
F
49.9 W  
To  
49.9 W  
VOUT–  
The transformer used in the output to convert the  
signal from differential to single-ended is an  
ADT1-1WT. It limits the frequency response of the  
circuit so that measurements cannot be made below  
approximately 1 MHz.  
50-W  
Test  
Equipment  
THS4509  
CM  
RG  
RIT  
49.9 W  
VOUT+  
0.22  
F
RCM  
VIN From  
VS–  
RF  
50-W  
source  
49.9 W  
RCMT  
The 1-dB compression point is measured with a  
spectrum analyzer with 50-double termination or  
100-termination; see Table 2. The input power is  
increased until the output is 1 dB lower than  
expected. The number reported in the table data is  
the power delivered to the spectrum analyzer input.  
Add 3 dB to refer to the amplifier output.  
Figure 79. CM Input Test Circuit  
CMRR and PSRR  
The circuit shown in Figure 80 is used to measure the  
CMRR and PSRR of VS+ and VS–. The input is  
switched appropriately to match the test being  
performed.  
S-Parameter, Slew Rate, Transient Response,  
Settling Time, Output Impedance, Overdrive,  
Output Voltage, and Turn-On/Off Time  
348 Ω  
V
The circuit shown in Figure 78 is used to measure  
s-parameters, slew rate, transient response, settling  
time, output impedance, overdrive recovery, output  
voltage swing, and turn-on/turn-off times of the  
amplifier. For output impedance, the signal is injected  
at VOUT with VIN left open and the drop across the  
49.9-resistor is used to calculate the impedance  
seen looking into the amplifier output.  
S+  
V
S+  
PSRR+  
V
IN  
49.9 Ω  
49.9 Ω  
Output  
From  
50 Ω  
Source  
100 Ω  
100 Ω  
Measured  
Here  
CMRR  
PSRR−  
THS4509  
CM  
100 Ω  
With High  
Impedance  
Differential  
Probe  
Open  
0.22 µF  
V
S−  
69.8 Ω  
V
S−  
348 Ω  
Because S21 is measured single-ended at the load  
with 50-double termination, add 12 dB to refer to  
the amplifier output as a differential signal.  
Figure 80. CMRR and PSRR Test Circuit  
V
IN  
From  
50 Ω  
R
R
F
G
G
Source  
V
S+  
R
R
IT  
49.9 Ω  
49.9 Ω  
V
V
OUT+  
To 50 Ω  
Test  
Equipment  
THS 4509  
CM  
R
OUT−  
0.22 µF  
49.9 Ω  
Open  
0.22 µF  
IT  
V
S−  
R
F
Figure 78. S-Parameter, SR, Transient Response,  
Settling Time, ZO, Overdrive Recovery, VOUT  
Swing, and Turn-On/Off Test Circuit  
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APPLICATION INFORMATION  
R
R
F
APPLICATIONS  
G
Single-Ended  
Input  
The following circuits show application information for  
V
Differential  
Output  
S
the  
THS4509.  
For  
simplicity,  
power-supply  
decoupling capacitors are not shown in these  
diagrams. Please see the THS4509 EVM section for  
recommendations. For more detail on the use and  
operation of fully-differential op amps refer to the  
V
+
OUT–  
THS  
4509  
R
G
+
V
OUT+  
application  
report,  
Fully-Differential  
Amplifiers  
(SLOA054).  
V
S
Differential Input to Differential Output Amplifier  
R
F
The THS4509 is a fully-differential op amp, and can  
be used to amplify differential input signals to  
differential output signals. A basic block diagram of  
the circuit is shown in Figure 81 (CM input not  
shown). The gain of the circuit is set by RF divided by  
RG.  
Figure 82. Single-Ended Input to Differential  
Output Amplifier  
Input Common-Mode Voltage Range  
The input common-model voltage of a fully differential  
op amp is the voltage at the '+' and '–' input pins of  
the op amp.  
R
F
Differential  
Differential  
V
S+  
Input  
Output  
It is important to not violate the input common-mode  
voltage range (VICR) of the op amp. Assuming the op  
amp is in linear operation the voltage across the input  
pins is only a few millivolts at most. So finding the  
voltage at one input pin will determine the input  
common-mode voltage of the op amp.  
R
R
G
G
V
V
V
IN+  
OUT–  
+
THS4509  
+
V
IN–  
OUT+  
Treating the negative input as a summing node, the  
voltage is given by Equation 1:  
V
S–  
æ
ö
÷
÷
ø
æ
ö
÷
÷
ø
RG  
RF  
ç
ç
VIC = VOUT+  
´
+ VIN-  
´
ç
ç
R
F
RG + RF  
RG + RF  
è
è
(1)  
To determine the VICR of the op amp, the voltage at  
the negative input is evaluated at the extremes of  
Figure 81. Differential Input to Differential Output  
Amplifier  
VOUT+  
.
Depending on the source and load, input and output  
termination can be accomplished by adding RIT and  
RO.  
As the gain of the op amp increases, the input  
common-mode voltage becomes closer and closer to  
the input common-mode voltage of the source.  
Single-Ended Input to Differential Output  
Amplifier  
The THS4509 can be used to amplify and convert  
single-ended input signals to differential output  
signals. A basic block diagram of the circuit is shown  
in Figure 82 (CM input not shown). The gain of the  
circuit is again set by RF divided by RG.  
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Setting the Output Common-Mode Voltage  
Note that RS and RT are added to the alternate input  
from the signal input to balance the amplifier.  
Alternately, one resistor can be used equal to the  
combined value RG+ RS || RT on this input. This is  
also true of the circuits shown in Figure 85 and  
Figure 86.  
The output common-mode voltage is set by the  
voltage at the CM pin(s). The internal common-mode  
control circuit maintains the output common-mode  
voltage within 3-mV offset (typ) from the set voltage,  
when set within 0.5 V of midsupply, with less than  
4-mV differential offset voltage. If left unconnected,  
the common-mode set point is set to midsupply by  
internal circuitry, which may be overdriven from an  
external source. Figure 83 is representative of the  
CM input. The internal CM circuit has about 700 MHz  
of –3-dB bandwidth, which is required for best  
performance, but it is intended to be a dc bias input  
pin. Bypass capacitors are recommended on this pin  
to reduce noise at the output. The external current  
required to overdrive the internal resistor divider is  
given by Equation 2:  
RS  
RG  
RT  
RF  
VS+  
VSignal  
VBias= VCM  
RS  
RO  
RO  
VCM  
VOUT-  
VOUT+  
THS4509  
CM  
RG  
RT  
VS–  
VCM  
VCM VCM  
RF  
2VCM - (VS+ - VS- )  
50 kW  
Figure 84. THS4509 DC-Coupled Single-Supply  
with Input Biased to VCM  
IEXT  
=
(2)  
where VCM is the voltage applied to the CM pin.  
In Figure 85 the source is referenced to ground and  
so is the input termination resistor. RPU is added to  
the circuit to avoid violating the VICR of the op amp.  
The proper value of resistor to add can be calculated  
from Equation 3:  
V
S+  
50 kW  
I
EXT  
(VIC - VS+ )  
RPU  
=
to internal  
CM circuit  
CM  
æ
ö
æ
ö
1
1
1
ç
ç
÷
÷
ç
ç
÷
÷
VCM  
- VIC  
+
RF  
RIN RF  
è
ø
è
ø
(3)  
50 kW  
VS+  
RPU  
V
S–  
RS  
RG  
RF  
Figure 83. CM Input Circuit  
VS+  
RT  
VS+  
VSignal  
RO  
RO  
Single-Supply Operation (3 V to 5 V)  
VOUT-  
VOUT+  
RPU  
RG  
THS 4509  
CM  
To facilitate testing with common lab equipment, the  
THS4509 EVM allows split-supply operation, and the  
characterization data presented in this data sheet  
were taken with split-supply power inputs. The device  
can easily be used with a single-supply power input  
without degrading the performance. Figure 84,  
Figure 85, and Figure 86 show dc and ac-coupled  
single-supply circuits with single-ended inputs. These  
configurations all allow the input and output  
common-mode voltage to be set to midsupply  
allowing for optimum performance. The information  
presented here can also be applied to differential  
input sources.  
RS  
RT  
VS-  
RF  
Figure 85. THS4509 DC-Coupled Single-Supply  
with RPU Used to Set VIC  
VIC is the desired input common-mode voltage, VCM  
CM, and RIN = RG+ RS || RT. To set to midsupply,  
make the value of RPU = RG+ RS || RT.  
=
In Figure 84, the source is referenced to the same  
voltage as the CM pin (VCM). VCM is set by the  
internal circuit to midsupply. RT along with the input  
impedance of the amplifier circuit provides input  
termination, which is also referenced to VCM  
.
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Table 3 is a modification of Table 1 to add the proper  
values with RPU assuming a 50-source impedance  
and setting the input and output common-mode  
voltage to midsupply.  
of the signal to 115 MHz (–3 dB). For testing, a signal  
generator is used for the signal source. The  
generator is an ac-coupled 50-source. A band-pass  
filter is inserted in series with the input to reduce  
harmonics and noise from the signal source. Input  
termination is accomplished via the 69.8-resistor  
and 0.22-μF capacitor to ground in conjunction with  
the input impedance of the amplifier circuit. A 0.22-μF  
capacitor and 49.9-resistor is inserted to ground  
across the 69.8-resistor and 0.22-μF capacitor on  
the alternate input to balance the circuit. Gain is a  
function of the source impedance, termination, and  
348-feedback resistor. Refer to Table 3 for  
component values to set proper 50-termination for  
other common gains. A split power supply of +4 V  
and –1 V is used to set the input and output  
common-mode voltages to approximately midsupply  
while setting the input common-mode of the  
ADS5500 to the recommended +1.55 V. This  
configuration maintains maximum headroom on the  
internal transistors of the THS4509 to insure optimum  
performance.  
Table 3. RPU Values for Various Gains  
GAIN  
6 dB  
RF  
RG  
RIT  
RPU  
348 Ω  
348 Ω  
348 Ω  
348 Ω  
169 Ω  
102 Ω  
61.9 Ω  
40.2 Ω  
64.9 Ω  
78.7 Ω  
115 Ω  
221 Ω  
200 Ω  
133 Ω  
97.6 Ω  
80.6 Ω  
10 dB  
14 dB  
20 dB  
There are two drawbacks to this configuration. One is  
that it requires additional current from the power  
supply. Using the values shown for a gain of 10 dB  
requires 37 mA more current with 5-V supply, and  
22 mA more current with 3-V supply.  
The other drawback is that this configuration also  
increases the noise gain of the circuit. In the 10-dB  
gain case, noise gain increases by a factor of 1.5.  
Figure 86 shows ac coupling to the source. Using  
capacitors in series with the termination resistors  
allows the amplifier to self-bias both input and output  
to midsupply.  
VIN  
From  
50-W  
source  
100 W  
348 W  
4 V  
69.3 W  
14-bit,  
125 MSPS  
100 W  
0.22 mF  
100 W  
AIN +  
C
RS  
RG  
RF  
ADS5500  
AIN -  
THS 4509  
CM  
2.7 pF  
100 W  
CM  
VS+=3V to 5V  
RT  
49.9 W  
49.9 W  
0.22 mF  
69.8 W  
0.22 mF  
VSignal  
V
-1  
RO  
RO  
0.1 mF  
0.1 mF  
C
VOUT-  
348 W  
THS 4509  
CM  
RG  
VOUT+  
Figure 87. THS4509 and ADS5500 Circuit  
RS  
C
RT  
C
VS-  
RF  
90  
SFDR (dBc)  
85  
Figure 86. THS4509 AC-Coupled Single-Supply  
THS4509 and ADS5500 Combined Performance  
80  
SNR (dBFS)  
75  
The THS4509 is designed to be a high-performance  
drive amplifier for high-performance data converters  
like the ADS5500 14-bit 125-MSPS ADC. Figure 87  
shows a circuit combining the two devices, and  
Figure 88 shows the combined SNR and SFDR  
performance versus frequency with –1-dBFS input  
signal level sampling at 125 MSPS. The THS4509  
amplifier circuit provides 10 dB of gain, converts the  
single-ended input to differential, and sets the proper  
input common-mode voltage to the ADS5500. The  
100-resistors and 2.7-pF capacitor between the  
THS4509 outputs and ADS5500 inputs along with the  
input capacitance of the ADS5500 limit the bandwidth  
70  
65  
10  
20  
30  
40  
50  
60  
70  
80  
90  
100 110  
Input Frequency - MHz  
Figure 88. THS4509 and ADS5500 SFDR and SNR  
Performance versus Frequency  
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Figure 89 shows the two-tone FFT of the THS4509  
and ADS5500 circuit with 65-MHz and 70-MHz input  
frequencies. The SFDR is 90 dBc.  
VIN  
100 W  
348 W  
From  
50-W  
source  
5 V  
69.8 W  
14-bit,  
105 MSPS  
225 W  
225 W  
0.22 mF  
AIN+  
THS4509  
CM  
2.7pF  
ADS5424  
AIN–  
100  
VBG  
49.9 W  
0.22 mF  
69.8 W  
0.22 mF  
49.9 W  
0.1 mF  
0.1 mF  
348 W  
Figure 90. THS4509 and ADS5424 Circuit  
95  
90  
SFDR (dBc)  
85  
80  
75  
Figure 89. THS4509 and ADS5500 2-Tone FFT  
with 65-MHz and 70-MHz Inputs  
THS4509 and ADS5424 Combined Performance  
SNR (dBFS)  
70  
Figure 90 shows the THS4509 driving the ADS5424  
ADC, and Figure 91 shows the combined SNR and  
SFDR performance versus frequency with –1-dBFS  
input signal level and sampling at 80 MSPS.  
10  
20  
30  
40  
50  
60  
70  
Input Frequency - MHz  
Figure 91. THS4509 and ADS5424 SFDR and SNR  
Performance vs Frequency  
As before, the THS4509 amplifier provides 10 dB of  
gain, converts the single-ended input to differential,  
and sets the proper input common-mode voltage to  
the ADS5424. Input termination and circuit testing is  
the same as described above for the THS4509 and  
ADS5500 circuit.  
The 225-resistors and 2.7-pF capacitor between  
the THS4509 outputs and ADS5424 inputs (along  
with the input capacitance of the ADC) limit the  
bandwidth of the signal to about 100MHz (–3 dB).  
Since  
the  
ADS5424  
recommended  
input  
common-mode voltage is 2.4 V, the THS4509 is  
operated from a single power-supply input with VS+  
5 V and VS– = 0 V (ground).  
=
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Layout Recommendations  
as a thermal pad on the underside of the package  
(see Figure 92c). Because this thermal pad has direct  
thermal contact with the die, excellent thermal  
performance can be achieved by providing a good  
thermal path away from the thermal pad.  
It is recommended to follow the layout of the external  
components near the amplifier, ground plane  
construction, and power routing of the EVM as  
closely as possible. General guidelines are:  
Note that the THS4509 has no electrical connection  
between the PowerPAD and circuitry on the die.  
Connecting the PowerPAD to any potential voltage  
between VS+ and VS– is acceptable. It is most  
important that it be connected for maximum heat  
dissipation.  
1. Signal routing should be direct and as short as  
possible into and out of the op amp circuit.  
2. The feedback path should be short and direct;  
avoid vias.  
3. Ground or power planes should be removed from  
directly under the amplifier input and output pins.  
The PowerPAD package allows both assembly and  
thermal management in one manufacturing operation.  
4. An output resistor is recommended on each  
output, as near to the output pin as possible.  
During the surface-mount solder operation (when the  
leads are being soldered), the thermal pad can also  
be soldered to a copper area underneath the  
package. Through the use of thermal paths within this  
copper area, heat can be conducted away from the  
package into either a ground plane or other heat  
dissipating device.  
5. Two 10-μF and two 0.1-μF power-supply  
decoupling capacitors should be placed as near  
to the power-supply pins as possible.  
6. Two 0.1-μF capacitors should be placed between  
the CM input pins and ground. This configuration  
limits noise coupled into the pins. One each  
should be placed to ground near pin 4 and pin 9.  
The PowerPAD package represents a breakthrough  
in combining the small area and ease of assembly of  
surface-mount with the previously awkward  
mechanical methods of heatsinking.  
7. It is recommended to split the ground panel on  
layer 2 (L2) as shown below and to use a solid  
ground on layer 3 (L3). A single-point connection  
should be used between each split section on L2  
and L3.  
8. A single-point connection to ground on L2 is  
recommended for the input termination resistors  
R1 and R2. This configuration should be applied  
to the input gain resistors if termination is not  
used.  
DIE  
Side View (a)  
DIE  
9. The THS4509 recommended PCB footprint is  
shown in Figure 93.  
End View (b)  
Bottom View (c)  
PowerPAD™ DESIGN CONSIDERATIONS  
Figure 92. Views of Thermally-Enhanced Package  
The THS4509 is available in a thermally-enhanced  
PowerPAD family of packages. These packages are  
constructed using a downset leadframe on which the  
die is mounted (see Figure 92a and Figure 92b). This  
arrangement results in the lead frame being exposed  
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PowerPAD PCB LAYOUT  
CONSIDERATIONS  
useful for slowing the heat transfer during  
soldering operations. This resistance makes the  
soldering of vias that have plane connections  
easier. In this application, however, low thermal  
resistance is desired for the most efficient heat  
transfer. Therefore, the holes under the IC  
PowerPAD package should make the connection  
to the internal ground plane, with a complete  
connection around the entire circumference of the  
plated-through hole.  
Although there are many ways to properly heatsink  
the PowerPAD package, the following steps illustrate  
the recommended approach.  
0.144  
0.049  
6. The top-side solder mask should leave the  
terminals of the package and the thermal pad  
area with its five holes exposed. The bottom-side  
solder mask should cover the five holes of the  
thermal pad area. This configuration prevents  
solder from being pulled away from the thermal  
pad area during the reflow process.  
0.012  
Pin 1  
0.0095  
0.015  
0.144  
0.0705  
0.0195  
7. Apply solder paste to the exposed thermal pad  
area and all of the IC terminals.  
0.010  
vias  
0.032  
8. With these preparatory steps in place, the IC is  
simply placed in position and run through the  
solder reflow operation as any standard  
surface-mount component. This process results  
in a part that is properly installed.  
0.030  
0.0245  
Top View  
The next consideration is the package constraints.  
The two sources of heat within an amplifier are  
quiescent power and output power. The designer  
should never forget about the quiescent heat  
generated within the device, especially multi-amplifier  
devices. Because these devices have linear output  
stages (Class AB), most of the heat dissipation is at  
low output voltages with high output currents.  
Figure 93. PowerPAD PCB Etch and Via Pattern  
1. Prepare the PCB with a top side etch pattern as  
shown in Figure 93. There should be etch for the  
leads as well as etch for the thermal pad.  
2. Place five holes in the area of the thermal pad.  
The holes should be 13 mils (0.013 in, 0,33 mm)  
in diameter. Keep them small so that solder  
wicking through the holes is not a problem during  
reflow.  
The other key factor when dealing with power  
dissipation is how the devices are mounted on the  
PCB. The PowerPAD devices are extremely useful  
for heat dissipation. But the device should always be  
soldered to a copper plane to fully use the heat  
dissipation properties of the PowerPAD. The SOIC  
package, on the other hand, is highly dependent on  
how it is mounted on the PCB. As more trace and  
3. Additional vias may be placed anywhere along  
the thermal plane outside of the thermal pad  
area. They help dissipate the heat generated by  
the IC. These additional vias may be larger than  
the 13-mil diameter vias directly under the  
thermal pad. They can be larger because they  
are not in the thermal pad area to be soldered, so  
that wicking is not a problem.  
copper area is placed around the device,  
θJA  
decreases and the heat dissipation capability  
increases. For a single package, the sum of the RMS  
output currents and voltages should be used to  
choose the proper package.  
4. Connect all holes to the internal ground plane.  
5. When connecting these holes to the ground  
plane, do not use the typical web or spoke via  
connection methodology. Web connections have  
a high thermal resistance connection that is  
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THS4509 EVM  
Figure 94 is the THS4509 EVAL1 EVM schematic; layers 1 through 4 of the PCB are shown Figure 95, and  
Table 4 is the bill of materials for the EVM as supplied from TI.  
GND  
J5  
V
V
S−  
S+  
J4  
J6  
VEE  
VCC  
0.1 µF  
C10  
0.1 µF  
C4  
10 µF  
10 µF  
10 µF  
10 µF  
0.1 µF  
0.1 µF  
C12  
TP1  
C9  
C6  
C3  
C5  
C13  
J8  
R5  
348 Ω  
R1  
69.8 Ω  
VCC  
VCC  
8
R9  
open  
6
5
J1  
7
R3  
12  
PD  
J3  
C15  
3
100 Ω  
R12  
R7  
C1  
open  
T1  
2
V
V
O+  
6
1
R11  
69.8 Ω  
86.6 Ω  
R8  
49.9 Ω  
U1  
0.22 µF  
11  
C8  
open  
C7  
open  
+
5
4
O−  
PwrPad10  
J2  
R4  
4
3
86.6 Ω  
Vocm  
9
XFMR_ADT1−1WT  
C2  
open  
100 Ω  
R2  
69.8 Ω  
15 13  
14 16  
R10  
open  
VEE  
R6  
J7  
348 Ω  
TP3  
VEE  
TP2  
C14  
0.1 µF  
C11  
0.1 µF  
Figure 94. THS4509 EVAL1 EVM Schematic  
Figure 95. THS4509 EVAL1 EVM Layer 1 through Layer 4  
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ITEM  
SLOS454H JANUARY 2005REVISED NOVEMBER 2009  
Table 4. THS4509 EVAL1 EVM Bill of Materials  
SMD  
SIZE  
REFERENCE  
DESIGNATOR  
PCB  
QTY  
MANUFACTURER  
PART NUMBER  
DESCRIPTION  
1
2
CAP, 10.0 μF, Ceramic, X5R, 6.3 V  
CAP, 0.1 μF, Ceramic, X5R, 10 V  
CAP, 0.22 μF, Ceramic, X5R, 6.3 V  
OPEN  
0805 C3-C6  
0402 C9-C14  
0402 C15  
4
6
1
4
2
1
3
2
2
2
1
3
(AVX) 08056D106KAT2A  
(AVX) 0402ZD104KAT2A  
(AVX) 04026D224KAT2A  
3
4
0402 C1, C2, C7, C8  
0402 R9, R10  
0402 R12  
5
OPEN  
6
Resistor, 49.9 , 1/16 W, 1%  
Resistor, 69.8 , 1/16 W, 1%  
Resistor, 86.6 , 1/16 W, 1%  
Resistor, 100 , 1/16 W, 1%  
Resistor, 348 , 1/16 W, 1%  
Transformer, RF  
(KOA) RK73H1ETTP49R9F  
(KOA) RK73H1ETTP69R8F  
(KOA) RK73H1ETTP86R6F  
(KOA) RK73H1ETTP1000F  
(KOA) RK73H1ETTP3480F  
(MINI-CIRCUITS) ADT1-1WT  
(HH SMITH) 101  
8
0402 R1, R2, R11  
0402 R7, R8  
0402 R3, R4  
0402 R5, R6  
T1  
9
10  
11  
12  
13  
Jack, banana receptance, 0.25" diameter  
hole  
J4, J5, J6  
14  
15  
16  
17  
18  
19  
20  
OPEN  
J1, J7, J8  
J2, J3  
3
2
3
1
4
4
1
Connector, edge, SMA PCB Jack  
Test point, Red  
(JOHNSON) 142-0701-801  
(KEYSTONE) 5000  
(TI) THS4509RGT  
TP1, TP2, TP3  
U1  
IC, THS4509  
Standoff, 4-40 HEX, 0.625" length  
SCREW, PHILLIPS, 4-40, 0.250"  
Printed circuit board  
(KEYSTONE) 1808  
SHR-0440-016-SN  
(TI) EDGE# 6468901  
EVM WARNINGS AND RESTRICTIONS  
It is important to operate this EVM within the input and output voltage ranges as specified in the table provided  
below.  
INPUT RANGE, VS+ TO VS–  
Input Range, VI  
3.0 V TO 6.0 V  
3.0 V to 6.0 V NOT TO EXCEED VS+ or VS–  
3.0 V to 6.0 V NOT TO EXCEED VS+ or VS–  
Output Range, VO  
Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If  
there are questions concerning the input range, please contact a TI field representative prior to connecting the  
input power.  
Applying loads outside of the specified output range may result in unintended operation and/or possible  
permanent damage to the EVM. Please consult the product data sheet or EVM user's guide (if user's guide is  
available) prior to connecting any load to the EVM output. If there is uncertainty as to the load specification,  
please contact a TI field representative.  
During normal operation, some circuit components may have case temperatures greater than +30°C. The EVM is  
designed to operate properly with certain components above +50°C as long as the input and output ranges are  
maintained. These components include but are not limited to linear regulators, switching transistors, pass  
transistors, and current sense resistors. These types of devices can be identified using the EVM schematic  
located in the material provided. When placing measurement probes near these devices during operation, please  
be aware that these devices may be very warm to the touch.  
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REVISION HISTORY  
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.  
Changes from Revision G (May 2008) to Revision H  
Page  
Changed title of Typical Characteristics: VS+ – VS– = 5 V ..................................................................................................... 8  
Deleted conditions from Typical Characteristics: VS+ – VS– = 5 V table of graphs ............................................................... 8  
Changed title of Typical Characteristics: VS+ – VS– = 3 V ................................................................................................... 17  
Deleted conditions from Typical Characteristics: VS+ – VS– = 3 V table of graphs ............................................................. 17  
Added y-axis to Figure 88 ................................................................................................................................................... 28  
Added y-axis to Figure 91 ................................................................................................................................................... 29  
Changed item 10 in Layout Recommendations section ..................................................................................................... 30  
Added the PowerPAD Design Considerations section ....................................................................................................... 30  
Added the PowerPAD PCB Layout Considerations section ............................................................................................... 31  
Moved Figure 93 and associated paragraph to PowerPAD PCB Layout Considerations section ..................................... 31  
Changes from Revision F (October 2007) to Revision G  
Page  
Updated document format .................................................................................................................................................... 1  
Changed common-mode range column for THS4509 and THS4513 rows in RELATED PRODUCTS table ...................... 1  
Added footnote 1 to Absolute Maximum Ratings table ........................................................................................................ 2  
Added V (volts) to unit column of ESD ratings rows in Absolute Maximum Ratings table ................................................... 2  
Changed VS+ – VS– = 5 V Input specifications from 1.75 V typ (common-mode input range high) to 1.4 V typ; –1.75  
V (common-mode input range low) to –1.4 V; 1.35 M|| 1.77 pF (differential input impedance) to 1.3 M|| 1.8 pF;  
1.02 M|| 2.26 pF (common-mode input impedance) to 1.0 M|| 2.3 pF .......................................................................... 4  
Changed VS+ – VS– = 3 V Input specifications from 0.75 V typ (common-mode input range high) to 0.4 V typ; –0.75  
V (common-mode input range low) to –0.4 V; 1.35 M|| 1.77 pF (differential input impedance) to 1.3 M|| 1.8 pF;  
1.02 M|| 2.26 pF (common-mode input impedance) to 1.0 M|| 2.3 pF .......................................................................... 6  
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PACKAGE OPTION ADDENDUM  
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11-Apr-2013  
PACKAGING INFORMATION  
Orderable Device  
THS4509RGTR  
Status Package Type Package Pins Package  
Eco Plan Lead/Ball Finish  
MSL Peak Temp  
Op Temp (°C)  
-40 to 85  
Top-Side Markings  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4)  
ACTIVE  
QFN  
QFN  
QFN  
QFN  
RGT  
16  
16  
16  
16  
3000  
Green (RoHS  
& no Sb/Br)  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
Level-2-260C-1 YEAR  
Level-2-260C-1 YEAR  
Level-2-260C-1 YEAR  
Level-2-260C-1 YEAR  
4509  
THS4509RGTRG4  
THS4509RGTT  
ACTIVE  
ACTIVE  
ACTIVE  
RGT  
RGT  
RGT  
3000  
250  
Green (RoHS  
& no Sb/Br)  
-40 to 85  
4509  
4509  
4509  
Green (RoHS  
& no Sb/Br)  
-40 to 85  
THS4509RGTTG4  
250  
Green (RoHS  
& no Sb/Br)  
-40 to 85  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability  
information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that  
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between  
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight  
in homogeneous material)  
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4)  
Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a  
continuation of the previous line and the two combined represent the entire Top-Side Marking for that device.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
11-Apr-2013  
OTHER QUALIFIED VERSIONS OF THS4509 :  
Automotive: THS4509-Q1  
NOTE: Qualified Version Definitions:  
Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects  
Addendum-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
14-Jul-2012  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
THS4509RGTR  
THS4509RGTT  
QFN  
QFN  
RGT  
RGT  
16  
16  
3000  
250  
330.0  
180.0  
12.4  
12.4  
3.3  
3.3  
3.3  
3.3  
1.1  
1.1  
8.0  
8.0  
12.0  
12.0  
Q2  
Q2  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
14-Jul-2012  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
THS4509RGTR  
THS4509RGTT  
QFN  
QFN  
RGT  
RGT  
16  
16  
3000  
250  
367.0  
210.0  
367.0  
185.0  
35.0  
35.0  
Pack Materials-Page 2  
IMPORTANT NOTICE  
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other  
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest  
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supplied at the time of order acknowledgment.  
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms  
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary  
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily  
performed.  
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and  
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