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AD5697R I2C Bus issues

Question asked by Ray.Yang on Jul 11, 2018
Latest reply on Jul 17, 2018 by Ray.Yang

Hi ,

 

When the AD5697R LDAC pin pulls down to ground,
the host sends a series of fake data before writing data to the AD5697R through the I2C bus,
then the host sends 0x18, 0x41, 0x0E, 0x51, and the AD5697R will responds.
Is this situation reasonable?  (Please see attachment AD5697R_issue_20180710.png)

 

If the I2C bus has multiple slave devices, the host performs a read operation on an I2C device,
does the device data cause the AD5697R to malfunction? (Please see attachment dac_5697R_output_off.png)

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