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AD7794 sampling capacitor

Question asked by bateng on Nov 22, 2012
Latest reply on Dec 21, 2012 by bateng

Hi,

I would like to design an antialiasing filter for the AD7794 channel and reference input. I have read in the FAQ that wrong RC combinations may starve the sampling capacitor and cause gain errors. Can you please specify the value of the sampling capacitor and internal resistance for the channel and reference input, so I can do the calculations? I assume that switching frequency is 64 kHz?

 

Regards,

Valentin

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