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Hi Team,
I would like to confirm if part ADS8688AT is a cold parable. Can the IC handle inputs (AIN, AUX_IN, SPI, etc) without either or both AVDD and DVDD?
Thanks in advance.
Regards,
Marvin
Hi Marvin,
Please review the ABS MAX values from the datasheet:
AUX in needs to be no greater that 300mV above AVDD. The SPI control lines (digital input/output) need to be no greater than 300mV above DVDD. See notes 2 and 3 for the analog inputs.
Hi Tom,
Thank you. I have a follow up question.
In the table below has a row for a case where AVDD=floating, and Table 2 states that the chip is protected by OVP as long as it is within +/-11V. Will this still be true if AVDD=0V? will the OVP work as well, as long as AIN is within +/-11V?
Thanks!
Regards,
Marvin