precision DC op-amp help...

[johnfm]

I need an ultra low-power, single op-amp with very good DC specs. Important specs are listed below. I have checked the usual suspects... AD, TI, Linear, but was wondering if anyone knew of a better MFR/product out there. Thanks...

Isupply: 100uA MAX
Voffset: 100uV MAX
Ioffset: 10pA MAX

 

[itsmoked]

Have you looked at the "chopper op amps" and their kind?
They are the kings of DC.

 

[ScottyUK]

Burr-Brown are always worth a look for high spec linears.



----------------------------------

One day my ship will come in.
But with my luck, I'll be at the airport!

 

[johnfm]

Yes... nowadays, they refer to these as "auto-zero" or "zero-drift" types. The MFRs I listed all have these types and I've looked into them... just wondering if anyone knew of any others.

Thanks for the reply!

 

[logbook]

Burr Brown is part of Texas of course.

You haven't mentioned National Semi, Motorola (On Semi),

 

[VisiGoth]

I think Intersil is still independent. I have not used their parts since they merged with Elantec. But I have been happy with parts from both vendors.

http://www.intersil.com/cda/deviceinfo/0,0,EL8176A,0.html

The EL8176A does not meet your Ios, but Intersil might be a place to look.

 

[johnfm]

TI (BB) has a micropower device (OPA336) that has decent DC specs... that might be the way I'll go. In general, Elantec parts have very good AC specs, but the offset currents are a little too high for my application. thanks to everyone for responding... i appreciate the feedback...