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Input-impedance of AD9280

Question asked by Kaos on May 12, 2014
Latest reply on Feb 27, 2017 by PMH

Dear Sir/Madam,

 

We are studying about your AD9280 8bit ADC.

I have a question.

 

We need the input-impedance for our simulation.

Impedance =Fs voltage / DC leakage current, we think, correct?

On your datasheet show DC leakage current =43uA when Fs=32MHz max.
Impedance mean 32MHz/43uA.

Our Fs(sampling freq (Conversion Rate)) is 2MHz.
So what is the DC leakage current Fs=2MHz?

 

Otherwise how should we think your input-impedance for this case?

 

Thanks Kaos

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