Hi all*, well I was trolling digikey for precision opamps... without a lot of success. (too many parameters) And then I remembered this table from AoE3.
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note: This is only the HV section, there's another page of low voltage ones.So I was looking for opamps with ~100uV max Vos and ~100 pA max bias current. (+/- 15 supplies) A dual would be nice, and if it came in a DIP it would save a board re-spin**. The only one that fit the dip spec is the AD706, which is kind of wimpy speed wise. (800 kHz GBW, 0.15 V/us). I've got some opa2192's and I put those into smd-dip adapters and they work fine. (Opa192 are fast becoming a fav.)
My rather simple question; Are there any new opamps I should add to the list?
George H.
*My bonehead mistake was I forgot that with a DC signal chain I care about the DC offset of every opamp/device in the chain.
** Do they call it a spin, because you use to spin on photo-resist?