DS15BR401 [TI]

具有预加重功能的 4 通道 LVDS 缓冲器/中继器;
DS15BR401
型号: DS15BR401
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

具有预加重功能的 4 通道 LVDS 缓冲器/中继器

中继器
文件: 总23页 (文件大小:624K)
中文:  中文翻译
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DS15BR400, DS15BR401  
www.ti.com  
SNLS224G AUGUST 2006REVISED APRIL 2013  
DS15BR400/DS15BR401 4-Channel LVDS Buffer/Repeater with Pre-Emphasis  
Check for Samples: DS15BR400, DS15BR401  
1
FEATURES  
DESCRIPTION  
The DS15BR400/DS15BR401 are four channel LVDS  
buffer/repeaters capable of data rates of up to 2  
Gbps. High speed data paths and flow-through pinout  
minimize internal device jitter and simplify board  
layout, while pre-emphasis overcomes ISI jitter  
effects from lossy backplanes and cables. The  
differential inputs interface to LVDS, and Bus LVDS  
signals such as those on TI's 10-, 16-, and 18- bit  
Bus LVDS SerDes, as well as CML and LVPECL.  
The differential inputs and outputs of the DS15BR400  
are internally terminated with 100resistors to  
improve performance and minimize board space. The  
DS15BR401 does not have input termination  
resistors. The repeater function is especially useful  
for boosting signals for longer distance transmission  
over lossy cables and backplanes.  
2
DC to 2 Gbps Low Jitter, High Noise Immunity,  
Low Power Operation  
6 dB of Pre-emphasis Drives Lossy  
Backplanes and Cables  
LVDS/CML/LVPECL Compatible Input, LVDS  
Output  
On-chip 100 output termination, optional 100  
Input Termination  
15 kV ESD Protection on LVDS Inputs and  
Outputs  
Single 3.3V Supply  
Industrial -40 to +85°C Temperature Range  
Space Saving WQFN-32 or TQFP-48 Packages  
The DS15BR400/DS15BR401 are powered from a  
single 3.3V supply and consume 578 mW (typ). They  
operate over the full -40°C to +85°C industrial  
temperature range and are available in space saving  
WQFN-32 and TQFP-48 packages.  
APPLICATIONS  
Cable Extension Applications  
Signal Repeating and Buffering  
Digital Routers  
Typical Application  
DS15BR400  
Cable or Backplane  
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.  
All trademarks are the property of their respective owners.  
2
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 © 2006–2013, Texas Instruments Incorporated  
DS15BR400, DS15BR401  
SNLS224G AUGUST 2006REVISED APRIL 2013  
www.ti.com  
Block and Connection Diagrams  
PEM PWDN  
PEM PWDN  
Pre-emphasis  
and Control  
Pre-emphasis  
and Control  
OUT0+  
IN0+  
IN0-  
OUT0+  
OUT0-  
IN0+  
IN0-  
OUT0-  
OUT1+  
OUT1-  
IN1+  
IN1-  
OUT1+  
OUT1-  
IN1+  
IN1-  
OUT2+  
OUT2-  
OUT2+  
OUT2-  
IN2+  
IN2-  
IN2+  
IN2-  
OUT3+  
OUT3-  
IN3+  
IN3-  
OUT3+  
OUT3-  
IN3+  
IN3-  
Figure 1. DS15BR400 Block Diagram  
Figure 2. DS15BR401 Block Diagram  
12 11 10  
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
IN0+  
IN0-  
OUT0+  
OUT0-  
OUT1+  
OUT1-  
GND  
OUT0+  
OUT0-  
OUT1+  
OUT1-  
OUT2+  
IN0+  
9
32  
31  
30  
29  
28  
IN1+  
IN1-  
IN0- 10  
IN1+ 11  
GND  
GND  
IN2+  
IN2-  
DAP  
(GND)  
12  
13  
14  
15  
16  
IN1-  
IN2+  
IN2-  
IN3+  
IN3-  
GND  
OUT2+  
OUT2-  
OUT3+  
OUT3-  
GND  
27 OUT2-  
26 OUT3+  
IN3+  
IN3-  
GND  
GND  
25  
OUT3-  
GND  
17 18 19 20 21 22 23 24  
25 26 27 28 29 30 31 32 33 34 35 36  
Figure 3. TQFP Pinout - Top View  
Package Number PFB0048A  
Figure 4. WQFN Pinout - Top View  
Package Number RTV0032A  
PIN DESCRIPTIONS  
Pin  
Name  
TQFP Pin  
Number  
WQFN Pin  
Number  
I/O, Type  
Description  
DIFFERENTIAL INPUTS  
IN0+  
IN0  
13  
14  
9
10  
I, LVDS  
I, LVDS  
I, LVDS  
I, LVDS  
Channel 0 inverting and non-inverting differential inputs.  
Channel 1 inverting and non-inverting differential inputs.  
Channel 2 inverting and non-inverting differential inputs.  
Channel 3 inverting and non-inverting differential inputs.  
IN1+  
IN1−  
15  
16  
11  
12  
IN2+  
IN2−  
19  
20  
13  
14  
IN3+  
IN3−  
21  
22  
15  
16  
2
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SNLS224G AUGUST 2006REVISED APRIL 2013  
PIN DESCRIPTIONS (continued)  
Pin  
Name  
TQFP Pin  
Number  
WQFN Pin  
Number  
I/O, Type  
Description  
DIFFERENTIAL OUTPUTS  
(1)  
OUT0+  
OUT0−  
48  
47  
32  
31  
O, LVDS  
O, LVDS  
O, LVDS  
O, LVDS  
Channel 0 inverting and non-inverting differential outputs.  
Channel 1 inverting and non-inverting differential outputs.  
Channel 2 inverting and non-inverting differential outputs.  
Channel 3 inverting and non-inverting differential outputs.  
(1)  
(1)  
(1)  
OUT1+  
OUT1−  
46  
45  
30  
29  
OUT2+  
OUT2−  
42  
41  
28  
27  
OUT3+  
OUT3-  
40  
39  
26  
25  
DIGITAL CONTROL INTERFACE  
PWDN  
PEM  
12  
2
8
2
I, LVTTL  
I, LVTTL  
A logic low at PWDN activates the hardware power down mode (all channels).  
Pre-emphasis Control Input (affects all Channels)  
POWER  
VDD  
3, 4, 5, 7, 10,  
11, 28, 29, 32,  
33  
3, 4, 6, 7, 20,  
21  
I, Power  
VDD = 3.3V, ±10%  
(2)  
GND  
N/C  
8, 9, 17, 18, 23,  
24, 37, 38, 43,  
44  
5
I, Ground Ground reference for LVDS and CMOS circuitry. For the WQFN package, the  
DAP is used as the primary GND connection to the device in addition to the pin  
numbers listed. The DAP is the exposed metal contact at the bottom of the  
WQFN-32 package. It should be connected to the ground plane with at least 4  
vias for optimal AC and thermal performance.  
1,6, 25, 26, 27,  
1, 17,  
No Connect  
30, 31, 34, 35, 18,19,22, 23,  
36 24  
(1) The LVDS outputs do not support a multidrop (BLVDS) environment. The LVDS output characteristics of the DS15BR400 and  
DS15BR401 are optimized for point-to-point backplane and cable applications.  
(2) Note that for the WQFN package the GND is connected thru the DAP on the back side of the WQFN package in addition to the actual  
pin numbers listed.  
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam  
during storage or handling to prevent electrostatic damage to the MOS gates.  
Copyright © 2006–2013, Texas Instruments Incorporated  
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Absolute Maximum Ratings(1)  
Supply Voltage (VDD  
)
0.3V to +4.0V  
0.3V to (VDD+0.3V)  
0.3V to (VDD+0.3V)  
0.3V to (VDD+0.3V)  
+40 mA  
CMOS Input Voltage  
LVDS Receiver Input Voltage  
LVDS Driver Output Voltage  
LVDS Output Short Circuit Current  
Junction Temperature  
+150°C  
Storage Temperature  
65°C to +150°C  
260°C  
Lead Temperature (Solder, 4sec)  
Max Pkg Power Capacity @ 25°C  
TQFP  
WQFN  
1.64W  
4.16W  
Thermal Resistance (θJA  
)
TQFP  
WQFN  
76°C/W  
30°C/W  
Package Derating above +25°C  
TQFP  
WQFN  
13.2mW/°C  
33.3mW/°C  
ESD Last Passing Voltage  
HBM, 1.5k, 100pF  
8 kV  
15 kV  
250V  
LVDS pins to GND only  
EIAJ, 0, 200pF  
Charged Device Model  
1000V  
(1) Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met,  
without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. TI  
does not recommend operation of products outside of recommended operation conditions.  
Recommended Operating Conditions  
Supply Voltage (VDD  
)
3.0V to 3.6V  
0V to VDD  
0V to VDD  
(1)  
Input Voltage (VI)  
Output Voltage (VO)  
Operating Temperature (TA)  
Industrial  
40°C to +85°C  
(1) VID max < 2.4V  
Electrical Characteristics  
Over recommended operating supply and temperature ranges unless other specified.  
Typ  
Symbol  
Parameter  
Conditions  
Min  
Max  
Units  
(1)  
LVCMOS DC SPECIFICATIONS (PWDN, PEM)  
VIH  
VIL  
IIH  
High Level Input Voltage  
Low Level Input Voltage  
High Level Input Current  
High Level Input Current  
Low Level Input Current  
LVCMOS Input Capacitance  
Input Clamp Voltage  
2.0  
GND  
10  
40  
VDD  
0.8  
V
V
VIN = VDD = 3.6V (PWDN pin)  
+10  
200  
+10  
µA  
µA  
µA  
pF  
V
IIHR  
IIL  
VIN = VDD = 3.6V (PEM pin)  
VIN = VSS, VDD = 3.6V  
10  
CIN1  
VCL  
Any Digital Input Pin to VSS  
ICL = 18 mA, VDD = 0V  
5.5  
1.5  
0.8  
(1) Typical parameters are measured at VDD = 3.3V, TA = 25°C. They are for reference purposes, and are not production-tested.  
4
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SNLS224G AUGUST 2006REVISED APRIL 2013  
Electrical Characteristics (continued)  
Over recommended operating supply and temperature ranges unless other specified.  
Typ  
Symbol  
Parameter  
Conditions  
Min  
Max  
Units  
(1)  
LVDS INPUT DC SPECIFICATIONS (INn±)  
VTH  
VTL  
Differential Input High  
Threshold  
VCM = 0.8V to 3.55V,  
VDD = 3.6V  
0
0
100  
mV  
mV  
(2)  
Differential Input Low  
VCM = 0.8V to 3.55V,  
VDD = 3.6V  
100  
(2)  
Threshold  
VID  
Differential Input Voltage  
VCM = 0.8V to 3.55V, VDD = 3.6V  
100  
2400  
3.55  
mV  
V
VCMR  
CIN2  
IIN  
Common Mode Voltage Range VID = 150 mV, VDD = 3.6V  
0.05  
LVDS Input Capacitance  
Input Current  
IN+ or INto VSS  
3.0  
pF  
µA  
µA  
VIN = 3.6V, VDD = 3.6V  
VIN = 0V, VDD = 3.6V  
10  
10  
+10  
+10  
LVDS OUTPUT DC SPECIFICATIONS (OUTn±)  
VOD  
Differential Output Voltage,  
0% Pre-emphasis  
RL = 100external resistor between OUT+ and OUT−  
Figure 5  
250  
360  
500  
mV  
(2)  
ΔVOD  
Change in VOD between  
Complementary States  
35  
1.05  
35  
35  
1.475  
35  
mV  
V
(3)  
VOS  
Offset Voltage  
1.18  
ΔVOS  
Change in VOS between  
Complementary States  
mV  
COUT  
IOS  
LVDS Output Capacitance  
Output Short Circuit Current  
OUT+ or OUTto VSS  
2.5  
21  
6
pF  
mA  
mA  
OUT+ or OUTShort to GND  
OUT+ or OUTShort to VDD  
40  
40  
SUPPLY CURRENT (Static)  
ICC  
Supply Current  
All inputs and outputs enabled and active, terminated with  
differential load of 100between OUT+ and OUT-. PEM = L  
175  
20  
215  
200  
mA  
µA  
ICCZ  
Supply Current - Power Down PWDN = L, PEM = L  
Mode  
SWITCHING CHARACTERISTICS—LVDS OUTPUTS  
tLHT  
Differential Low to High  
Transition Time  
Use an alternating 1 and 0 pattern at 200 Mbps, measure  
170  
170  
1.0  
250  
250  
2.0  
ps  
ps  
ns  
(4)  
between 20% and 80% of VOD  
.
Figure 6 , Figure 8  
tHLT  
Differential High to Low  
(4)  
Transition Time  
tPLHD  
tPHLD  
Differential Low to High  
Propagation Delay  
Use an alternating 1 and 0 pattern at 200 Mbps, measure at  
50% VOD between input to output.  
Figure 6 , Figure 7  
Differential High to Low  
Propagation Delay  
1.0  
10  
25  
2.0  
60  
ns  
ps  
ps  
ps  
(4)  
tSKD1  
tSKCC  
Pulse Skew  
|tPLHD–tPHLD|  
Output Channel to Channel  
Difference in propagation delay (tPLHD or tPHLD) among all  
output channels.  
75  
(4)  
Skew  
(4)  
tSKP  
Part to Part Skew  
Common edge, parts at same temp and VCC  
550  
(2) Differential output voltage VOD is defined as ABS(OUT+–OUT). Differential input voltage VID is defined as ABS(IN+–IN).  
(3) Output offset voltage VOS is defined as the average of the LVDS single-ended output voltages at logic high and logic low states.  
(4) Not production tested. Ensured by a statistical analysis on a sample basis at the time of characterization.  
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SNLS224G AUGUST 2006REVISED APRIL 2013  
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Electrical Characteristics (continued)  
Over recommended operating supply and temperature ranges unless other specified.  
Typ  
Symbol  
Parameter  
Conditions  
Min  
Max  
Units  
(1)  
(6)  
tJIT  
Jitter (0% Pre-emphasis)  
RJ - Alternating 1 and 0 at 750 MHz  
0.5  
14  
14  
1.5  
30  
31  
ps  
ps  
ps  
(5)  
(7)  
DJ - K28.5 Pattern, 1.5 Gbps  
(8)  
TJ - PRBS 223-1 Pattern, 1.5 Gbps  
tON  
LVDS Output Enable Time  
LVDS Output Disable Time  
Time from PWDN to OUT± change from TRI-STATE to active.  
Figure 9, Figure 10  
20  
12  
µs  
ns  
tOFF  
Time from PWDN to OUT± change from active to TRI-STATE.  
Figure 9, Figure 10  
(5) Jitter is not production tested, but ensured through characterization on a sample basis.  
(6) Random Jitter, or RJ, is measured RMS with a histogram including 1500 histogram window hits. Stimulus and fixture Jitter has been  
subtracted. The input voltage = VID = 500 mV, input common mode voltage = VICM = 1.2V, 50% duty cycle at 750 MHz, tr = tf = 50 ps  
(20% to 80%).  
(7) Deterministic Jitter, or DJ, is a peak to peak value. Stimulus and fixture jitter has been subtracted. The input voltage = VID = 500 mV,  
input common mode voltage = VICM = 1.2V, K28.5 pattern at 1.5 Gbps, tr = tf = 50 ps (20% to 80%). The K28.5 pattern is repeating bit  
streams of (0011111010 1100000101).  
(8) Total Jitter, or TJ, is measured peak to peak with a histogram including 3500 window hits. Stimulus and fixture Jitter has been  
subtracted. The input voltage = VID = 500 mV, input common mode voltage = VICM = 1.2V, 223-1 PRBS pattern at 1.5 Gbps, tr = tf = 50  
ps (20% to 80%).  
DC Test Circuits  
1/4 DS15BR400  
V
OH  
OUT+  
OUT-  
IN+  
IN-  
Power Supply  
Power Supply  
R
L
R
D
V
OL  
Figure 5. Differential Driver DC Test Circuit  
AC Test Circuits and Timing Diagrams  
1/4 DS15BR400  
OUT+  
OUT-  
IN+  
IN-  
Signal Generator  
R
L
R
D
Figure 6. Differential Driver AC Test Circuit  
Figure 7. Propagation Delay Timing Diagram  
6
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Figure 8. LVDS Output Transition Times  
1/4 DS15BR400  
R / 2  
OUT+  
OUT-  
L
IN+  
IN-  
Power Supply  
Power Supply  
1.2V  
R
D
R / 2  
L
PWDN  
Pulse Generator  
50W  
Figure 9. Enable/Disable Time Test Circuit  
Figure 10. Enable/Disable Time Diagram  
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APPLICATION INFORMATION  
INTERNAL TERMINATIONS  
The DS15BR400 has integrated termination resistors on both the input and outputs. The inputs have a 100Ω  
resistor across the differential pair, placing the receiver termination as close as possible to the input stage of the  
device. The LVDS outputs also contain an integrated 100ohm termination resistor, this resistor is used to  
minimize the output return loss and does not take the place of the 100 ohm termination at the inputs to the  
receiving device. The integrated terminations improve signal integrity and decrease the external component  
count resulting in space savings. The DS15BR401 has 100output terminations only.  
OUTPUT CHARACTERISTICS  
The output characteristics of the DS15BRB400/DS15BR401 have been optimized for point-to-point backplane  
and cable applications, and are not intended for multipoint or multidrop signaling.  
POWERDOWN MODE  
The PWDN input activates a hardware powerdown mode. When the powerdown mode is active (PWDN=L), all  
input and output buffers and internal bias circuitry are powered off. When exiting powerdown mode, there is a  
delay associated with turning on bandgap references and input/output buffer circuits as indicated in the LVDS  
Output Switching Characteristics.  
Upon asserting the power down function (PWDN = Low), and if the Pre-emphasis feature is enable, it is possible  
for the driver output to source current for a short amount of time lifting the output common mode to VDD. To  
prevent this occurrence, a load discharge pull down path can be used on either output (1 kto ground  
recommended). Alternately, a commonly deployed external failsafe network will also provide this path (see  
INPUT FAILSAFE BIASING). The occurrence of this is application dependant, and parameters that will effect if  
this is of concern include: AC coupling, use of the powerdown feature, presence of the discharge path, presence  
of the failsafe biasing, the usage of the pre-emphasis feature, and input characteristics of the downstream LVDS  
Receiver.  
PRE-EMPHASIS  
Pre-emphasis dramatically reduces ISI jitter from long or lossy transmission media. One pin is used to select the  
pre-emphasis level for all outputs, off or on. The pre-emphasis boost is approximately 6 dB at 750 MHz.  
Table 1. Pre-emphasis Control Selection Table  
PEM  
Pre-Emphasis  
0
1
Off  
On  
INPUT FAILSAFE BIASING  
Failsafe biasing of the LVDS link should be considered if the downstream Receiver is ON and enabled when the  
source is in TRI-STATE, powered off, or removed. This will set a valid known input state to the active receiver.  
This is accomplished by using a pull up resistor to VDD on the ‘plus’ line, and a pull down resistor to GND on the  
‘minus’ line. Resistor values are in the 750 Ohm to several krange. The exact value depends upon the desired  
common mode bias point, termination resistor(s) and desired input differential voltage setting. Please refer to  
application note AN-1194 “Failsafe Biasing of LVDS interfaces” (SNLA051) for more information and a general  
discussion.  
DECOUPLING  
Each power or ground lead of the DS15BR400 should be connected to the PCB through a low inductance path.  
For best results, one or more vias are used to connect a power or ground pin to the nearby plane. Ideally, via  
placement is immediately adjacent to the pin to avoid adding trace inductance. Placing power plane closer to the  
top of the board reduces effective via length and its associated inductance.  
8
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Bypass capacitors should be placed close to VDD pins. Small physical size capacitors, such as 0402, X7R,  
surface mount capacitors should be used to minimize body inductance of capacitors. Each bypass capacitor is  
connected to the power and ground plane through vias tangent to the pads of the capacitor. An X7R surface  
mount capacitor of size 0402 has about 0.5 nH of body inductance. At frequencies above 30 MHz or so, X7R  
capacitors behave as low impedance inductors. To extend the operating frequency range to a few hundred MHz,  
an array of different capacitor values like 100 pF, 1 nF, 0.03 µF, and 0.1 µF are commonly used in parallel. The  
most effective bypass capacitor can be built using sandwiched layers of power and ground at a separation of 2–3  
mils. With a 2 mil FR4 dielectric, there is approximately 500 pF per square inch of PCB.  
The center dap of the WQFN package housing the DS15BR400 should be connected to a ground plane through  
an array of vias. The via array reduces the effective inductance to ground and enhances the thermal  
performance of the WQFN package.  
INPUT INTERFACING  
The DS15BR400 and DS15BR401 accept differential signals and allow simple AC or DC coupling. With a wide  
common mode range, the DS15BR400 and DS15BR401 can be DC-coupled with all common differential drivers  
(i.e. LVPECL, LVDS, CML). The following three figures illustrate typical DC-coupled interface to common  
differential drivers. Note that the DS15BR400 inputs are internally terminated with a 100Ω resistor while the  
DS15BR401 inputs are not, therefore the latter requires external input termination.  
LVDS  
Driver  
DS15BR400  
Receiver  
100W Differential T-Line  
OUT+  
IN+  
100W  
IN-  
OUT-  
Figure 11. Typical LVDS Driver DC-Coupled Interface to DS15BR400 Input  
CML3.3V or CML2.5V  
Driver  
V
CC  
DS15BR400  
Receiver  
50W  
50W  
100W Differential T-Line  
OUT+  
OUT-  
IN+  
IN-  
100W  
Figure 12. Typical CML Driver DC-Coupled Interface to DS15BR400 Input  
LVPECL  
Driver  
LVDS  
Receiver  
100W Differential T-Line  
IN+  
IN-  
OUT+  
100W  
OUT-  
150-250W  
150-250W  
Figure 13. Typical LVPECL Driver DC-Coupled Interface to DS15BR400 Input  
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OUTPUT INTERFACING  
The DS15BR400 and DS15BR401 output signals that are compliant to the LVDS standard. Their outputs can be  
DC-coupled to most common differential receivers. Figure 14 illustrates typical DC-coupled interface to common  
differential receivers and assumes that the receivers have high impedance inputs. While most differential  
receivers have a common mode input range that can accomodate LVDS compliant signals, it is recommended to  
check respective receiver's data sheet prior to implementing the suggested interface implementation.  
DS15BR400  
Driver  
Differential  
Receiver  
100W Differential T-Line  
OUT+  
IN+  
CML or  
LVPECL or  
LVDS  
100W  
100W  
IN-  
OUT-  
Figure 14. Typical DS15BR400 Output DC-Coupled Interface to an LVDS, CML or LVPECL Receiver  
10  
Submit Documentation Feedback  
Copyright © 2006–2013, Texas Instruments Incorporated  
Product Folder Links: DS15BR400 DS15BR401  
 
DS15BR400, DS15BR401  
www.ti.com  
SNLS224G AUGUST 2006REVISED APRIL 2013  
Typical Performance Characteristics  
Power Supply Current vs. Data Rate  
Total Jitter vs. Ambient Temperature  
30  
300  
25  
250  
200  
20  
15  
10  
150  
V
= 3.3V  
CC  
= 500 mV  
ID  
V
= 3.3V  
CC  
V
100  
50  
V
= 500 mV  
ID  
V
= 1.2V  
CM  
V
= 1.2V  
CM  
NRZ PRBS-23  
NRZ PRBS-23  
1.5 Gbps  
5
0
T
=25°C  
A
0
-40 -20  
0
20  
40  
60  
80 100  
0
0.4  
0.8  
1.2  
1.6  
2.0  
TEMPERATURE (°C)  
DATA RATE (Gbps)  
Figure 15.  
Figure 16.  
Total Jitter vs. Data Rate  
Data Rate vs. Cable Length (0.25 UI Criteria)  
30  
2.5  
V
CC  
= 3.3V  
NRZ PRBS-23  
Jitter = 0.25 UI  
25  
20  
2.0  
1.5  
T
A
= 25 °C  
CAT5e  
PEM  
ON  
PEM  
OFF  
15  
V
= 3.3V  
1.0  
0.5  
CC  
10  
5
V
= 500 mV  
ID  
V
= 1.2V  
CM  
NRZ PRBS-23  
T
= 25°C  
A
0
0
1.0  
1.2  
1.4  
1.6  
1.8  
2.0  
1
10  
20  
30  
40  
DATA RATE (Gbps)  
CABLE LENGTH (m)  
(1)  
Figure 17.  
Figure 18.  
Data Rate vs. Cable Length (0.5 UI Criteria)  
2.5  
V
CC  
= 3.3V  
NRZ PRBS-23  
Jitter = 0.5 UI  
2.0  
1.5  
T
A
= 25°C  
CAT5e  
PEM  
OFF  
PEM  
ON  
1.0  
0.5  
0
1
10  
20  
30  
40  
CABLE LENGTH (m)  
(1)  
Figure 19.  
(1) Data presented in this graph was collected using the DS15BR400EVK, a pair of RJ-45 to SMA adapter boards and various length  
Belden 1700a cables. The maximum data rate was determined based on total jitter (0.25 UI criteria) measured after the cable. The total  
jitter was a peak to peak value measured with a histogram including 3000 window hits.  
Copyright © 2006–2013, Texas Instruments Incorporated  
Submit Documentation Feedback  
11  
Product Folder Links: DS15BR400 DS15BR401  
 
DS15BR400, DS15BR401  
SNLS224G AUGUST 2006REVISED APRIL 2013  
www.ti.com  
REVISION HISTORY  
Changes from Revision F (April 2013) to Revision G  
Page  
Changed layout of National Data Sheet to TI format .......................................................................................................... 11  
12  
Submit Documentation Feedback  
Copyright © 2006–2013, Texas Instruments Incorporated  
Product Folder Links: DS15BR400 DS15BR401  
PACKAGE OPTION ADDENDUM  
www.ti.com  
30-Sep-2021  
PACKAGING INFORMATION  
Orderable Device  
Status Package Type Package Pins Package  
Eco Plan  
Lead finish/  
Ball material  
MSL Peak Temp  
Op Temp (°C)  
Device Marking  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4/5)  
(6)  
DS15BR400TSQ  
NRND  
WQFN  
RTV  
32  
1000  
Non-RoHS  
& Green  
Call TI  
Level-3-260C-168 HR  
-40 to 85  
5R400SQ  
DS15BR400TSQ/NOPB  
DS15BR400TVS  
ACTIVE  
NRND  
WQFN  
TQFP  
RTV  
PFB  
32  
48  
1000 RoHS & Green  
SN  
Level-3-260C-168 HR  
Level-3-260C-168 HR  
-40 to 85  
-40 to 85  
5R400SQ  
250  
250  
Non-RoHS  
& Green  
Call TI  
DS15BR  
400TVS  
DS15BR400TVS/NOPB  
DS15BR400TVSX/NOPB  
ACTIVE  
ACTIVE  
TQFP  
TQFP  
PFB  
PFB  
48  
48  
RoHS & Green  
SN  
SN  
Level-3-260C-168 HR  
Level-3-260C-168 HR  
-40 to 85  
-40 to 85  
DS15BR  
400TVS  
1000 RoHS & Green  
1000 RoHS & Green  
DS15BR  
400TVS  
DS15BR401TSQ/NOPB  
DS15BR401TVS/NOPB  
ACTIVE  
ACTIVE  
WQFN  
TQFP  
RTV  
PFB  
32  
48  
SN  
SN  
Level-3-260C-168 HR  
Level-3-260C-168 HR  
-40 to 85  
-40 to 85  
5R401SQ  
250  
RoHS & Green  
DS15BR  
401TVS  
DS15BR401TVSX/NOPB  
ACTIVE  
TQFP  
PFB  
48  
1000 RoHS & Green  
SN  
Level-3-260C-168 HR  
-40 to 85  
DS15BR  
401TVS  
(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) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance  
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may  
reference these types of products as "Pb-Free".  
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.  
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based  
flame retardants must also meet the <=1000ppm threshold requirement.  
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
30-Sep-2021  
(5) Multiple Device Markings will be inside parentheses. Only one Device 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 Device Marking for that device.  
(6)  
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two  
lines if the finish value exceeds the maximum column width.  
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 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
9-Aug-2022  
TAPE AND REEL INFORMATION  
REEL DIMENSIONS  
TAPE DIMENSIONS  
K0  
P1  
W
B0  
Reel  
Diameter  
Cavity  
A0  
A0 Dimension designed to accommodate the component width  
B0 Dimension designed to accommodate the component length  
K0 Dimension designed to accommodate the component thickness  
Overall width of the carrier tape  
W
P1 Pitch between successive cavity centers  
Reel Width (W1)  
QUADRANT ASSIGNMENTS FOR PIN 1 ORIENTATION IN TAPE  
Sprocket Holes  
Q1 Q2  
Q3 Q4  
Q1 Q2  
Q3 Q4  
User Direction of Feed  
Pocket Quadrants  
*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)  
DS15BR400TSQ  
WQFN  
RTV  
RTV  
PFB  
RTV  
PFB  
32  
32  
48  
32  
48  
1000  
1000  
1000  
1000  
1000  
178.0  
178.0  
330.0  
178.0  
330.0  
12.4  
12.4  
16.4  
12.4  
16.4  
5.3  
5.3  
9.3  
5.3  
9.3  
5.3  
5.3  
9.3  
5.3  
9.3  
1.3  
1.3  
2.2  
1.3  
2.2  
8.0  
8.0  
12.0  
12.0  
16.0  
12.0  
16.0  
Q1  
Q1  
Q2  
Q1  
Q2  
DS15BR400TSQ/NOPB WQFN  
DS15BR400TVSX/NOPB TQFP  
DS15BR401TSQ/NOPB WQFN  
DS15BR401TVSX/NOPB TQFP  
12.0  
8.0  
12.0  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
9-Aug-2022  
TAPE AND REEL BOX DIMENSIONS  
Width (mm)  
H
W
L
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
DS15BR400TSQ  
WQFN  
WQFN  
TQFP  
WQFN  
TQFP  
RTV  
RTV  
PFB  
RTV  
PFB  
32  
32  
48  
32  
48  
1000  
1000  
1000  
1000  
1000  
208.0  
208.0  
356.0  
208.0  
356.0  
191.0  
191.0  
356.0  
191.0  
356.0  
35.0  
35.0  
35.0  
35.0  
35.0  
DS15BR400TSQ/NOPB  
DS15BR400TVSX/NOPB  
DS15BR401TSQ/NOPB  
DS15BR401TVSX/NOPB  
Pack Materials-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
9-Aug-2022  
TRAY  
L - Outer tray length without tabs  
KO -  
Outer  
tray  
height  
W -  
Outer  
tray  
width  
Text  
P1 - Tray unit pocket pitch  
CW - Measurement for tray edge (Y direction) to corner pocket center  
CL - Measurement for tray edge (X direction) to corner pocket center  
Chamfer on Tray corner indicates Pin 1 orientation of packed units.  
*All dimensions are nominal  
Device  
Package Package Pins SPQ Unit array  
Max  
matrix temperature  
(°C)  
L (mm)  
W
K0  
P1  
CL  
CW  
Name  
Type  
(mm) (µm) (mm) (mm) (mm)  
DS15BR400TVS  
DS15BR400TVS  
PFB  
PFB  
PFB  
PFB  
TQFP  
TQFP  
TQFP  
TQFP  
48  
48  
48  
48  
250  
250  
250  
250  
10 x 25  
10 x 25  
10 x 25  
10 x 25  
150  
150  
150  
150  
315 135.9 7620 12.2  
315 135.9 7620 12.2  
315 135.9 7620 12.2  
315 135.9 7620 12.2  
11.1 11.25  
11.1 11.25  
11.1 11.25  
11.1 11.25  
DS15BR400TVS/NOPB  
DS15BR401TVS/NOPB  
Pack Materials-Page 3  
PACKAGE OUTLINE  
RTV0032A  
WQFN - 0.8 mm max height  
S
C
A
L
E
2
.
5
0
0
PLASTIC QUAD FLATPACK - NO LEAD  
5.15  
4.85  
A
B
PIN 1 INDEX AREA  
5.15  
4.85  
0.8  
0.7  
C
SEATING PLANE  
0.08 C  
0.05  
0.00  
2X 3.5  
SYMM  
EXPOSED  
THERMAL PAD  
(0.1) TYP  
9
16  
8
17  
SYMM  
33  
2X 3.5  
3.1 0.1  
28X 0.5  
1
24  
0.30  
32X  
0.18  
32  
25  
PIN 1 ID  
0.1  
C A B  
0.5  
0.3  
32X  
0.05  
4224386/B 04/2019  
NOTES:  
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing  
per ASME Y14.5M.  
2. This drawing is subject to change without notice.  
3. The package thermal pad must be soldered to the printed circuit board for thermal and mechanical performance.  
www.ti.com  
EXAMPLE BOARD LAYOUT  
RTV0032A  
WQFN - 0.8 mm max height  
PLASTIC QUAD FLATPACK - NO LEAD  
(3.1)  
SYMM  
SEE SOLDER MASK  
DETAIL  
32  
25  
32X (0.6)  
1
24  
32X (0.24)  
28X (0.5)  
(3.1)  
33  
SYMM  
(4.8)  
(1.3)  
8
17  
(R0.05) TYP  
(
0.2) TYP  
VIA  
9
16  
(1.3)  
(4.8)  
LAND PATTERN EXAMPLE  
EXPOSED METAL SHOWN  
SCALE: 15X  
0.07 MIN  
ALL AROUND  
0.07 MAX  
ALL AROUND  
METAL UNDER  
SOLDER MASK  
METAL EDGE  
EXPOSED METAL  
SOLDER MASK  
OPENING  
EXPOSED  
METAL  
SOLDER MASK  
OPENING  
NON SOLDER MASK  
DEFINED  
SOLDER MASK DEFINED  
(PREFERRED)  
SOLDER MASK DETAILS  
4224386/B 04/2019  
NOTES: (continued)  
4. This package is designed to be soldered to a thermal pad on the board. For more information, see Texas Instruments literature  
number SLUA271 (www.ti.com/lit/slua271).  
5. Vias are optional depending on application, refer to device data sheet. If any vias are implemented, refer to their locations shown  
on this view. It is recommended that vias under paste be filled, plugged or tented.  
www.ti.com  
EXAMPLE STENCIL DESIGN  
RTV0032A  
WQFN - 0.8 mm max height  
PLASTIC QUAD FLATPACK - NO LEAD  
(0.775) TYP  
25  
32  
32X (0.6)  
1
32X (0.24)  
28X (0.5)  
24  
(0.775) TYP  
(4.8)  
33  
SYMM  
(R0.05) TYP  
4X (1.35)  
17  
8
9
16  
4X (1.35)  
SYMM  
(4.8)  
SOLDER PASTE EXAMPLE  
BASED ON 0.125 MM THICK STENCIL  
SCALE: 20X  
EXPOSED PAD 33  
76% PRINTED SOLDER COVERAGE BY AREA UNDER PACKAGE  
4224386/B 04/2019  
NOTES: (continued)  
6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate  
design recommendations.  
www.ti.com  
MECHANICAL DATA  
MTQF019A – JANUARY 1995 – REVISED JANUARY 1998  
PFB (S-PQFP-G48)  
PLASTIC QUAD FLATPACK  
0,27  
0,17  
0,50  
M
0,08  
36  
25  
37  
24  
48  
13  
0,13 NOM  
1
12  
5,50 TYP  
7,20  
SQ  
Gage Plane  
6,80  
9,20  
SQ  
8,80  
0,25  
0,05 MIN  
0°7°  
1,05  
0,95  
0,75  
0,45  
Seating Plane  
0,08  
1,20 MAX  
4073176/B 10/96  
NOTES: A. All linear dimensions are in millimeters.  
B. This drawing is subject to change without notice.  
C. Falls within JEDEC MS-026  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
IMPORTANT NOTICE AND DISCLAIMER  
TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATA SHEETS), DESIGN RESOURCES (INCLUDING REFERENCE  
DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS”  
AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY  
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD  
PARTY INTELLECTUAL PROPERTY RIGHTS.  
These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate  
TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable  
standards, and any other safety, security, regulatory or other requirements.  
These resources are subject to change without notice. TI grants you permission to use these resources only for development of an  
application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license  
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TI’s products are provided subject to TI’s Terms of Sale or other applicable terms available either on ti.com or provided in conjunction with  
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