Category: Hardware
Product Number: AD5940
Hi,
I have a question regarding Hibernate mode. My goal is to maintain the electrochemical sensor bias while the overall system is in Ship Mode.
During Ship Mode:
- AVDD and DVDD remain at 3.3 V
- RESET remains pulled high from an always-on 1.8 V rail
- IOVDD drops to 0 V because the system 1.8 V rail is turned off during the ship mode
- No SPI communication is required
My question is: Can IOVDD be powered down to 0 V while the AD5940 is in Hibernate mode with the low-power DAC, low-power reference, and potentiostat enabled to maintain sensor bias?
Would this affect the VBIAS/VZERO levels or the ability to resume normal operation once IOVDD is restored?
I could not find any specific guidance in the datasheet regarding whether IOVDD must remain powered during Hibernate mode, so I wanted to confirm the intended operating condition.
