Texas Instruments AMC7832EVM, User Manual, Page: 4 / 33

Optional:
LDO Regulated
Power
20-Pin
Conn. To
SDM-
USB-DIG
17-CH ADC
Input
8 GPIO
Connection
12-CH DAC
Vout
Default:
External Power
(Terminal Blocks)
AMC7832
SPI
Power
AMC7832EVM
USB Bus
from
Computer
External Power
Or
Op24-V Wall Adapter
20-pin
Connector
SDM-USB-
DIG
J1 Connection or
Terminal Blocks
Personal
Computer
(PC)
AMC7832EVM Hardware Setup
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4 SLAU544A – February 2014 – Revised September 2016
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AMC7832EVM User’s Guide
2 AMC7832EVM Hardware Setup
This section provides the overall system setup for the EVM. A PC runs software that communicates with
the SDM-USB-DIG platform, which generates the power and digital signals used to communicate with the
EVM board. An op24-V wall supply can provide power through the J5 connector to provide power
to on-board power regulators (LDOs) that regulate the analog and digital supplies. By default, on-board
connectors are included on the EVM board for external supplies.
Figure 1 displays the system setup for
the AMC7832EVM.
Figure 1. AMC7832EVM Hardware Setup
2.1 Theory of Operation for AMC7832 Hardware
A block diagram of the AMC7832EVM test board is displayed in Figure 2 . The EVM board provides
testpoints for the supplies, internal reference, ground connections, SPI inputs, ADC inputs, and DAC
outputs.
Figure 2. AMC7832 Test Board Block Diagram