[sdiy] low input bias current opamps

Guy McCusker guy.mccusker at gmail.com
Wed Aug 15 09:41:13 CEST 2018

I am a long way from knowing what I am doing but when I want to play
with devices with specific parameters like this I use the TI
parametric search tool.


Weirdly this doesn't bring up the LF444, I think because that is part
of a "specialist" range of devices not covered by this search. Which
is annoying.

Here's a similar search for Analog Devices parts:

ST have one too but I hate it so I don't use it :)

On Wed, Aug 15, 2018 at 4:43 AM, David G Dixon <dixon at mail.ubc.ca> wrote:
> Hey Team,
> I'm looking for opamps with the following properties:
> 1) Through-hole
> 2) Quad opamp
> 3) 14-DIP package
> 4) High power range (+/-18V, say)
> 5) Low input bias current (10 pA or less typical)
> 6) Pin-compatible with TL074, etc.
> 7) Not LF444 (cuz they all seem to be defective)
> So, basically, I'm looking for a suitable alternative for LF444.
> So, here are my questions:
> A) Do you know of such a thing
> B) How does one go about finding such a thing, generally?
> Thanks in advance!
> Dave (Floating VCA) Dixon
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