Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
They cannot use LM358 because its spec and channel number are different with OPA171.
need your kindly help to check if we have alternative solution which the OPA between input and Vcc without internal clamp diode and the spec is the same or ever better than OPA171.
the legacy OPAmps are built on a "huge" die compared to the modern OPAmps. Bigger structures on the die are less vulnerable to ESD and EOS (electrical overstress). This is why the very first OPAmps are not having ESD protecion diodes at the inputs. Modern OPAmps, on the other hand, urgently need ESD protection measures. You couldn't even handle them during assembling and soldering without the internal protection measures.
So, if you are looking for an OPAmp without input protection diodes, you automatically end up with a "very old" legacy OPAmp.
By the way, "very old" does not necessarily mean "very bad"...
Why is the customer searching for an OPAmp without input protection diodes at all? Maybe he can follow a different approach?
