Vtech
No you are right. I will press the report button. Having found a cross reference site the OPA237 was indeed shown against a LM741.
Do you know what a CMMR is? No If I did I would not be asking.
How about an offset V/I , impedance, slew rate? No. If I did I would not be asking.
I am sure others on this site are more than happy to give guidance to this old 'adolescent' amature hobyist , age being the only detail on my profile,and are more patient of my lack of knowledge on the subject. So thanks for the encouragement etc etc. I am sure you will ignore any future post's by myself on the subject, hopefully.
Suggestion Don't take up teaching................
Willy