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OPA381: TIA Op Amp Selection

Part Number: OPA381

Hello,

I am working on designing a transimpedance amplifier circuit and need help with the op amp selection. Since the end goal is to design a circuit for an instrument in space, I need to pick a part that has a space qualified version or radiation testing results, but also with a commericial version that is pin compatible such that we can save money on test runs of the PCB. I like the OPA381, but it does not seem like there is a space-version that I can see (although I have been known to be blind at times).

Contrary to most designs I have seen online, we do not care about bandwidth. I was given a requirement to knock the bandwidth down to 30 Hz for instance. Our required gain is not super high either at 100k.

Any assistance in knocking down the choices to something more managable is greatly appreciated!