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OPA2191: made with the same mask set and processing as the OPA2197?

Part Number: OPA2191
Other Parts Discussed in Thread: OPA2197

Hi Team, 

Good day. I am posting this inquiry on behalf of the customer.

"Can you tell me if OPA2197 and OPA2191 are the same silicon layout/processing and if OPA2191 is just a test-out to tighter specs?

Simply, is the OPA2191 made with the same mask set and processing as the OPA2197?"

Please help to advise. Thank you for extending your support.

Kind regards, 

Marvin