The selection guide lists the AD8655 with a current noise spec of 1 fA per rt Hz but this specification is not found on the parts datasheet.
The datasheet does not list a current noise spec for this part. Can you clear this up for me? I really want to know what the current noise spec is for this part. I designed it into an amplifier that is not performing as expected.
I really love the selection guide on your site. Its very easy to use. Its also easy to find your parts in stock at my supplier.
CMOS op amps like the AD8655 have extremely low current noise. It’s usually just a femtoamp or two. For that reason, we do not specify it on the datasheet.