OPA111AM

Well Alex, here is what the TI Cross Reference reports, not very useful it would seem, 

And yes, Mouser shows this as obsolete, 

This is a circa 1984 BurrBrown part in a metal can - doubt you will find any physical match, but surely there are electrical upgrades in more modern packages. 

Hi Alex,

As Michael indicated, OPA111AM is obsolete a long ago.  

Thomas recommended OPA196 as alternative for OPA111AM part. Depending on your application and the available supply ranges on your circuit, we can recommend something to replace the part. Please let us know.  

https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/877288/opa111-direct-replacement-for-a-composite-opa?tisearch=e2e-sitesearch&keymatch=opa111#

Best,

Raymond

Hi Alex,

I think one of these may also do:

https://www.ti.com/amplifier-circuit/op-amps/products.html#p480=1;1&p1261max=36;180&p23typ=1;10&p22typ=1;20&p2max=0.002;0.5&p1typ=0.00032;5&p743typ=-2;5&p7typ=0.69;12&p89=CMOS;FET;FET%20/%20CMOS%20Input&p3247max=0.02;100&sort=p2max;asc

They show a little bit lower noise compared to the OPA196, if noise is an issue.

Kai

The OPA145 also looks like a good choice, this file has not been recently updated so the OPA196 is not in yet, and the pricing is out of date. 

OPA111A options.xlsx