Q14. What is the recommended initialization and register configuration sequence for AD4111/AD4112/AD4114/AD4115?
On power-up, it is advisable to perform a reset by writing 64 consecutive ones to the part.
This will reset the serial interface, and it will also reset the on-chip registers to their default conditions. The device does have a power-on reset function. However, any glitches during power-up can cause corruption of the registers, therefore a reset in the initialization routine is advisable.
The recommended flow is as follows:
- Write to Channel Configuration (Select input and setup for each ADC channel, enable open wire detection in GPIO configuration)
- Write to Setup Configuration (Select Filter order, Output data rate, etc.)
- Write to ADC Mode and Interface Mode Configuration (Select ADC operating mode, Clock source, enable CRC, Data+Status, etc.)