AD7631 power supply problem

Document created by analog-archivist Employee on Feb 23, 2016
Version 1Show Document
  • View in full screen mode

After provided the power supply to AD7631 VCC=+12V, VEE=-12V, AVDD=DVDD=+5V,
OVDD=+3.3V, I tested the voltage at the AD7631 power supply pins. I found that
the voltage at OVDD is 4.3V rather than 3.3V. When I disconnected the power
supply to OVDD, I found there was a 4.6V voltage at this pin. I wondered why
the voltage at OVDD was changed. Is there any potential problem if it is not
3.3V?

 

Do not connect TEN,BIPOLAR with 5V voltage level.  Change to 3.3V level.

Attachments

    Outcomes