Texas Instruments DACx750EMC-EVM Kit, Руководство пользователя, Страница: 4 / 23

DAC8760
J1
(to SM-USB-DIG)
External Power
SPI
Power
VOUT Protection Circuit
Isolation
IOUT Protection Circuit
Computer
SM-USB-DIG
Platform
DAC8760EVM
External Power
USB 10-Pin
EVM Hardware Setup
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2 EVM Hardware Setup
This section discusses the overall system setup for the EVM. A personal computer (PC) runs the software
that communicates with the SM-USB-DIG Platform, which provides the power and digital signals used to
communicate with the EVM board. Connectors on the EVM board allow the user to connect the required
external power supply.
Figure 1. DAC8760EVM Hardware Setup
2.1 Theory of Operation for EVM Hardware
A block diagram of the EVM hardware setup is shown in Figure 2 . This board provides test points for the
SPI™ inputs, power, reference, ground connections, ALARM, CLR, BOOST, and the analog outputs of the
DAC. Note that DACx750 only features current outputs (IOUT), but also includes a test point for R3-
SENSE.
Figure 2. DAC8760EVM Block Diagram
4 DACx760EMC-EVM SBAU229 – April 2014
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