3.2 Inputs
Resistors R1 and R4 are 0-Ω resistors. The input terminals (IN+ and IN-) have corresponding sense lines so that
the inputs to the device can be terminated on the lines with 50-Ω to an oscilloscope. This allows the input signals
to be observed with minimal loading and distortion. There are also optional input resistors R2 and R3 for direct
50-Ω terminations if required by the input signal generator, otherwise they can be left uninstalled.
R1 0
+
–
R4 0
GND
IN+_SENSE
IN-_SENSE
V
CC
V
EE
IN+
IN-
GND
Figure 3-2. Input Side Schematic Without Optional Resistors R2 and R3
Additionally, the pads from R2 and R3 can be used to solder a 100-Ω termination resistor for LVDS input signals.
Option for 100
differential
resistor for
LVDS input
signals
Figure 3-3. Configuration for LVDS Inputs Using the Unused Pads of R2 and R3
Board Setup
SNOU189 – MAY 2022
TLV3811EVM User’s Guide
7
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