I have exactly the same problem. After a while, the chip simply stops executing SPI commands from the MCU. Vdd = 3.3V , Vref a_h = 3.0V
|The ADC stops responding to any commands from the MCU. This applies to both the RESET and the output level settings. Rebooting the MCU does not produce any results. However, the issue can be resolved by restarting the AD5328ARUZ power supply.
Here is an example of how the microcontroller sets the output levels. The SPI frequency is low.
Edit Notes
fix[edited by: ozoni at 2:44 PM (GMT -5) on 19 Dec 2025]


