SN761663DGKRG4 [TI]
AGC Amplifier; AGC放大器器
| 型号： | SN761663DGKRG4 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | AGC Amplifier |
| 文件： | 总9页 (文件大小：207K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN761663
www.ti.com
SLES151–OCTOBER 2005
AGC Amplifier
FEATURES
DGK PACKAGE
(TOP VIEW)
•
•
•
•
Low-Distortion AGC Amplifier
Wide Gain-Control Range
5-V Power Supply
VCC
1
2
3
4
8
7
6
5
GND1
OUT1
OUT2
GND2
8-Pin MSOP Package
IN1
IN2
APPLICATIONS
•
Digital TV
AGC Control
AGC
•
Digital CATV, STB
P0026-03
DESCRIPTION
The SN761663 is an AGC amplifier for the TV tuner
system of a digital TV, CATV, or STB. The circuit
consists of three stages of controlled-gain
amplification, followed by
amplifier.
a
fixed-gain output
The device is packaged in an 8-pin MSOP suitable
for surface mounting.
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.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
SN761663
www.ti.com
SLES151–OCTOBER 2005
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.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
SN761663
Supply voltage, VCC (pin 1)(2)
Input voltage(2), AGC (pin 4), IN1 (pin 2), IN2 (pin 3)
–0.4 V to 6.5 V
–0.4 V to VCC
(3)
Continuous total dissipation
477 mW
Operating free-air temperature, TA
Junction temperature, TJ
–20°C to 85°C
150°C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Voltage values are with respect to the GND of the circuit.
(3) At TA≤ 25°C. For TA > 25°C, the derating factor is 3.82 mW/°C.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range
MIN
4.5
NOM
MAX
5.5
UNIT
V
VCC
TA
Supply voltage
5
Operating free-air temperature
–20
85
°C
DC ELECTRICAL CHARACTERISTICS
VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
MIN
TYP
23
MAX
UNIT
mA
µA
V
ICC
Supply current
IIAGC
Input current (AGC)
VAGC = 3 V
30
60
VCC
1
VAGCMAX AGC maximum gain control voltage
VAGCMIN AGC minimum gain control voltage
Maximum gain
Minimum gain
3
0
V
AC ELECTRICAL CHARACTERISTICS
VCC = 5 V, TA = 25°C. Parameters measured in test circuit of Figure 9 or Figure 10.
PARAMETER
Maximum gain
TEST CONDITIONS
VAGC = 3 V
MIN
56
TYP
60
MAX
64
UNIT
dB
GMAX
GMIN
GCR
VOUT
NF
Minimum gain
VAGC = 0 V
–10
–7
–4
dB
Gain control range
Output voltage
VAGC = 0 V–3 V
Single-ended output
Maximum gain
67
dB
2.6
10
Vp-p
dB
Noise figure
IM3
Third-order intermodulation distortion
fIN1 = 43 MHz, fIN2 = 44 MHz, VOUT = –2
dBm, maximum gain
–50
dBc
IIP3
RIN
Input intercept point
Minimum gain
11
1
dBm
Input resistance (IN1, IN2)
kΩ
2
SN761663
www.ti.com
SLES151–OCTOBER 2005
DEVICE INFORMATION
DGK PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
VCC
IN1
IN2
GND1
OUT1
OUT2
GND2
AGC
P0026-02
TERMINAL FUNCTIONS
TERMINAL
I/O
EQUIVALENT CIRCUIT
DESCRIPTION
NAME
NO.
4 kΩ
4
AGC
4
I
Gain-control voltage
100 kΩ
S0118-01
GND1
GND2
IN1
8
5
2
3
–
–
I
Ground
Ground
V
bias
AGC amplifier input
AGC amplifier input
IN2
I
1 kΩ
1 kΩ
2
3
S0117-01
OUT1
OUT2
7
6
O
O
AGC amplifier output
AGC amplifier output
15 Ω
6
7
S0119-01
VCC
1
–
5-V power supply
3
SN761663
www.ti.com
SLES151–OCTOBER 2005
TYPICAL CHARACTERISTICS
GAIN
vs
VAGC
NOISE FIGURE
vs
GAIN
70
30
T
A
= 25°C
T
A
= 25°C
60
50
40
30
20
10
0
V
= 5.5 V
25
20
15
10
5
CC
V
= 4.5 V
CC
V
CC
= 5 V
V
CC
= 5 V
V
CC
= 5.5 V
V
CC
= 4.5 V
−10
0.5
1.0
1.5
2.0
2.5
3.0
3.5
10
20
30
40
50
60
70
AGC Control Voltage − V
Gain − dB
G001
G002
Figure 1.
Figure 2.
OUTPUT LEVEL
vs
INPUT LEVEL
GAIN
vs
FREQUENCY
20
10
70
60
50
40
30
20
10
0
V = 5.5 V
CC
VAGC = 3 V
0
V
= 5.5 V
VAGC = 1.8 V
= 5.5 V
CC
V
= 4.5 V
−10
−20
−30
−40
−50
−60
−70
−80
V
V = 5 V
CC
CC
CC
V
= 5 V
CC
V
= 5 V
CC
V
= 4.5 V
CC
VAGC = 0 V
= 5.5 V
V
= 4.5 V
CC
V
CC
V
= 5 V
CC
V
= 4.5 V
CC
Gain = Max
T = 25°C
T = 25°C
A
A
−80
−60
−40
−20
0
10
100
Input Level − dBm
f − Frequency − MHz
G003
G004
Figure 3.
Figure 4.
4
SN761663
www.ti.com
SLES151–OCTOBER 2005
TYPICAL CHARACTERISTICS (continued)
IM3
vs
GAIN
IM3 (GAIN = MIN)
10
0
10
0
Gain = Min
VAGC = 0 V
V
CC
= 5 V
−10
−20
−30
−40
−50
−60
−70
−80
−90
T = 25°C
A
−10
43 MHz (−2 dBm)
−20
43/44 MHz
−30
−40
42 MHz
42 MHz
−50
−60
V
= 5 V
−70
−80
CC
T = 25°C
A
0
10
20
30
40
50
60
−30
−20
−10
0
10
Gain − dB
Input Level − dBm
G005
G006
Figure 5.
Figure 6.
IM3 (GAIN = MID)
IM3 (GAIN = MAX)
20
10
10
0
Gain = Mid
VAGC = 1.8 V
V
CC
= 5 V
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
T = 25°C
A
43/44 MHz
−10
−20
−30
−40
−50
−60
−70
−80
43/44 MHz
42 MHz
42 MHz
Gain = Max
VAGC = 3 V
= 5 V
V
CC
T = 25°C
A
−50
−40
−30
−20
−10
−80
−70
−60
−50
−40
Input Level − dBm
Input Level − dBm
G007
G008
Figure 7.
Figure 8.
5
SN761663
www.ti.com
SLES151–OCTOBER 2005
APPLICATION INFORMATION
TEST CIRCUITS
Figure 9 and Figure 10 are test circuits for the SN761663. Figure 9 is the circuit for measurement of gain and
output voltage. Figure 10 is the circuit for measurement of intermodulation distortion and input intercept point.
This application information is advisory, and a performance check is required for actual application circuits.
VCC
Spectrum Analyzer
47 µF
(50 Ω)
0.1 µF
1
VCC
IN1
GND1
OUT1
OUT2
GND2
8
7
6
5
SG (50 Ω)
0.1 µF
0.1 µF
200 Ω
200 Ω
0.1 µF
0.1 µF
2
51 Ω
3
4
IN2
AGC
51 Ω
0.1 µF
S0120-01
Figure 9. Measurement Circuit for Gain and Output Voltage
SG1 (50 Ω)
VCC
Spectrum Analyzer
47 µF
0.1 µF
(50 Ω)
1
2
VCC
IN1
GND1
OUT1
OUT2
GND2
8
7
6
5
0.1 µF
0.1 µF
200 Ω
200 Ω
0.1 µF
0.1 µF
+
51 Ω
3
4
IN2
AGC
51 Ω
SG2 (50 Ω)
0.1 µF
S0121-01
Figure 10. Measurement Circuit for IM3 and IIP3
6
PACKAGE OPTION ADDENDUM
www.ti.com
17-Nov-2005
PACKAGING INFORMATION
Orderable Device
SN761663DGK
Status (1)
ACTIVE
ACTIVE
ACTIVE
ACTIVE
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
Drawing
MSOP
DGK
8
8
8
8
100 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SN761663DGKG4
SN761663DGKR
SN761663DGKRG4
MSOP
MSOP
MSOP
DGK
DGK
DGK
100 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
(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) 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.
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.
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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
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