Adc32Xxvm Input Coupling Configuration Resistors - Texas Instruments ADC3EVM User Manual

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1.5.1 ADC32xxEVM
The ADC32xx-EVM boards can be operated in either ac-coupling or dc-coupling mode. To operate the
board in dc-coupling mode, a few modifications must be made. On the back side of the EVM, the
unpopulated pads must be populated with the devices listed on the AMPLIFIER schematic diagram (page
4) of the ADC32XXXEVM-SCH_X.pdf located in the
details the components needed for dc-coupling using the THS4541RGT and all required circuitry.
After the amplifier components are installed on the bottom of the ADC32xx-EVM, the resistors on the top
of the board must be altered to change the output from ac-coupled to dc-coupled.
three shared pad footprints per channel that must be modified. See
to change the appropriate resistors.
Mode
AC-Coupled
DC-Coupled
Figure 8. ADC32xxVM Input Coupling Configuration Resistors
SLAU579D – June 2014 – Revised August 2018
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Table 6. ADC32xxEVM AC-DC Coupling Resistor Swap
R3, R4, R14R18, R142, R139
R135, R7, R120, R121R138, R20, R144,
R141
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ADC32xx schematic design zip
Table 6
Install
R135, R7, R120, R121R138, R20, R144,
R141
R3, R4, R14R18,R142, R139
ADC3xxxEVM and ADC3xJxxEVM
Introduction
file. This schematic
Figure 8 shows the
and the ADC32xx design files
Uninstall
13