I am not an EE but understand circuit diagrams pretty well and have constructed many. However I am following a circuit diagram that shows a OP90 which appears to be an Analog Devices chip. However it seems like it might be obsolete. Is there a common replacement for it? I am building a circuit to amplify a medical pressure transducer and I found someone else had done it online before and I was following their design. I can get the OP90 from the usual sources but would take the upgraded version instead. Thanks
Jason