I am using CDC AD7746 in my project. In which 1st channel of AD7746 has damaged may be due to external excessive capacitance on the pins.
can anyone suggest me a circuitry with which I can save my CDC ?
Thank you for Reading.......
I am not sure what the failure mode is here in year application so it is difficult for me to comment. If it is some sort of transient voltage then maybe TVS diodes would help.
Just FYI, moved this from the Inertial MEMS Community to the Data Converter community. Cheers!
Thanks for your reply.......
I am using a circuit to extend the range of AD7746 mentioned in application note (CN0129) of extending the range of AD7746....in which i have used resistances such that excitation voltage from EXC pins is about 200 mV with 32.5 kHz freq.
At such low Diodes wont help to prevent ADC7746 Ch+ pins from getting damaged.
Searching for another solution...:-)
Thank you so much......
plz go to link below for App. Note
Retrieving data ...