EVM Software Overview
13
SLAU727 – August 2017
Copyright © 2017, Texas Instruments Incorporated
DAC8771 Evaluation Module
4.5
DAC Calibration Controls
Each DAC may use digital calibration to reduce offset and gain errors at output. By default, the calibration
features are disabled. To enable the calibration features, the DAC Calibration
Enable
Boolean control
must be checked. When the control is checked, offset and gain calibration may be controlled by the values
written to
Offset
Calibration and
Gain
Calibration controls, respectively, on the EVM GUI. For more
information concerning the calibration features, refer to
DAC8771 Single-Channel 16-Bit Voltage and
Current Output DAC With Adaptive Power
4.6
Slew-Rate Controls
Control the slew-rate of the channel with the
Slew Control
register. By default, the slew-rate control feature
is disabled. To enable the slew-rate control feature, the Slew Control
Enable
Boolean control must be
checked. When the control is checked, slew-rate
Step Size
and
Clock
registers may be used to control the
slew-rate of the output through the Slew Control
Step Size
and Slew Control
Clock
, respectively.
4.7
Buck-Boost Converter Controls
The buck-boost converter can be configured through the EVM GUI. The
Buck-Boost Mode
control is used
to select the operating mode of the buck-boost converter and the
Buck-Boost Enable
control is used to
enable the positive, negative, or both arms of the buck-boost converter. When
Buck-Boost Mode
is set to
Clamp Mode
, the
Positive CLMP
and
Negative CLMP
controls are used to set the output clamp of the
arm.
