ADC Input Impedance

Posted on December 13, 2007 at 07:22

ADC Input Impedance

This topic has been closed for replies.

Associate III

Posted on May 17, 2011 at 09:43

Where can I find a spec for the input impedance of the ADC on the STR912?

I've looked in the datasheet but don't see it anywhere (one would expect to see it in the ''ADC Electrical Characteristics'' section).

Thanks.

Visitor II

Posted on May 17, 2011 at 09:43

I asked the tech Support..

If AD-Input-Voltage is in the range 0V..VDDQ: Rin> 100MOhm, Cin = 5pF

Visitor II

Posted on May 17, 2011 at 09:43

Can a ST applications engineer please answer this question. This is a very standard spec. that should be in the data sheets.

FYI I measure 1.3uA.

Sign up