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Q&A AD7791 Input Impedance

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AD7791 Input Impedance

Abdullah_Ghamdi on Apr 26, 2016

Hi

I am planning to use AD7791 in an application, but I want to inquire about the impedance at the analog inputs of the chip.

What is the input impedance seen at the analog inputs when BUF is enabled and also when disabled?

Regards,

Abdullah

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JellenieR
Apr 27, 2016 +1 suggested
Hi, Abdullah.

We list the input current specification rather than specify the input impedance. The input impedance can be calculated from this input current specification. When buffer is enabled, the…

0 JellenieR

on Apr 27, 2016 6:37 PM
Hi, Abdullah.

We list the input current specification rather than specify the input impedance. The input impedance can be calculated from this input current specification. When buffer is enabled, the average input current is +/-1nA max. When buffer is disabled, the average input current is +/-400nA/V.

Thanks,

Jellenie
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0 EZAdministrator

on Aug 2, 2018 3:26 PM
This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin
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