ADS7046: Input impedance

Kei Kuwahara

Part Number: ADS7046

Hello team,

What is the input impedance of AINP & AINM of ADS7046?

If the input impedance varies with frequency, then I would like to know the impedance at 250kHz.

Best Regards,

Kei Kuwahara

+1 Tom Hendrick over 1 year ago

Hi Kei,

It would be based on the SCLK speed, not the sample rate. Rin is 1/(SCLK*Sample cap).

0 Kei Kuwahara over 1 year ago in reply to Tom Hendrick

Hello Tom,

Thank you for the answer!

Just want to confirm, is Sample cap=16pF from the datasheet?

Best Regards,
Kei Kuwahara

+1 Tom Hendrick over 1 year ago in reply to Kei Kuwahara

Yes, it is.

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