4.6 Configurable Input Circuitry
The configurable portion of the input circuit includes R5, R6, R8, R13, R15, R16, Cc1, and Cc2. These
components support prototyping of additional circuitry, such as pads and filters. During assembly at the factory,
resistors R8 and R13 are not installed, while R5, R6, R15, R16, Cc1, and Cc2 are replaced by 0-Ω shunt
resistors.
4.7 Configurable Output Circuitry and Preamp Output Connector
The configurable portion of the output circuit includes R17, R18, R19, R20, R21, C13, C14, and C15. These
components support prototyping of additional circuitry, such as pads and filters, as well as emulation of various
loading conditions. During assembly at the factory, resistors R18 and R19 are replaced by 0-Ω shunt resistors.
Resistors R17, R20, and R21, as well as capacitors C13 through C15, are not installed. The differential
preamplifier output is provided at connector J4, which is a 3-pin male XLR connector, or at connector J6, which
is a 1/4-inch TRS connector.
Setup Guide
10
PGA2500EVMV2 Evaluation Module
SBOU257 – JUNE 2021
Copyright © 2021 Texas Instruments Incorporated
