For a sensor device i use 2 DAC7750 in daisy chain together with a CC3200MOD. The first versions of the board use the CLR Signal of DAC7750 to reset the device during power up once.After a redesign i have to use the GPIO pin for other purposes.
After various tests i have the following issue: As i change the digital signals for data, there is a low current on the outputs but the input current mirrors the programmed current in supply. So as i would have a internal current flowing from the outputs to ground. The output current is totaly wrong.
Must the CLR Signal be applied to the circuit ?
Does anybody has an idea for this ?
best regards
Thomas