MAX9694 Evaluation Kit
15) Press the Quick Start button.
16) Use the DVM voltage probe to verify that the DAC
output voltages are close to the voltages shown in
the Output (V) edit boxes for the respective channel.
Detailed Description of Software
The MAX9694 evaluation software main window is
shown in Figure 1. The GUI software automatically
detects the MAX9694 device address and displays it in
the I2C Address Setting drop-down list and in the soft-
ware status bar. The DAC output voltages in the Upper
DAC Channels and Lower DAC Channels group
boxes are calculated using the upper and lower refer-
ence input voltages on PCB pads VREFU_H, VREFU_L,
VREFL_H, and VREFL_L. The reference input voltages
MUST be measured at the appropriate PCB pads and
the values entered in the respective Reference
Voltages (V) edit boxes for the DAC output calculations
to be correct.
Upon IC startup, the DAC outputs wake up in high-
impedance mode. To exit high-impedance mode, press
the Quick Start button or perform the following steps:
1) Modify any of the DAC channel’s register values.
Register values are modified using the edit boxes
and scrollbars of the Register Settings tab. See
the Output Register Values section for more infor-
mation.
2) Press the Load All Values To Registers button.
The Quick Start button loads all registers with the val-
ues shown in Figure 1.
Figure 1. MAX9694 Evaluation Software Main Window
4
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