Texas Instruments AMC7834, User Manual, Page: 18 / 32

AMC7834EVM Software Overview
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18 SLAU608B – December 2014 – Revised May 2016
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AMC7834 Evaluation Module
5.2.4 AMC7834EVM DAC Page
The DAC page provides an interface to observe and control the different data registers, modes, and
configurations available for each individual DAC channel (see
Figure 18 ).
Figure 18. DAC Page
Before setting the DAC channels, ensure that the DAC reference is configured correctly for use. By
default, the EVM is configured to use the on board +2.5-V supply. Additional DAC reference configurations
are illustrated in
Table 7 .
After the DAC reference configuration is set, the DACs can be programmed and released from the clamp
voltage by unchecking the
Enable DACX Clamp , see the blue boxes in Figure 19 . The eight DACs are
separated into 4 bipolar and 4 unipolar DAC outputs. The bipolar DACs include the following ranges,
which are selectable in the DAC Range drop-down menu: –4 to +1 V, –5 to 0 V, and 0 to +5 V. The
unipolar DACs are programmable with the following ranges: 0 to 5 V, and 2.5 to 7.5 V. The DAC ranges
and DAC input fields are respectively highlighted in green and red boxes. Either one of the DAC input
fields can be programmed with the desired DAC output voltage or hexadecimal value.
Figure 19. Program DAC Registers