OPA380: OPA380

peter booth

Part Number: OPA380

has anyone got a circuit for a transimpedance amplifier for use with a photomultiplier giving a negative output current. I should probably be able to work this out but my Texas amplifier knowledge is a bit limited :(

over 3 years ago

0 Michael Steffes over 3 years ago

Guru 47485 points

Hey Peter, that very old OPA380 says it is a transimpedance amplifier but that DC referencing path is very high noise - you can do better with just a decomp op amps.

I covered that topic with representative devices listed in this article (transimpedance is at the end). And this says high speed (and you need the GBP product to get the transimpedance gain and/or BW) but is generally applicable.

https://www.planetanalog.com/applying-high-speed-de-compensated-vfas-hitting-performance-targets-while-tuning-phase-margin-insight-10/

0 peter booth over 3 years ago in reply to Michael Steffes

Prodigy 20 points

Many thanks Michael, I will have a play now

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OPA380: OPA380