MCP606T Op-amp for Front-End / Audio Paths in KiwiSDR

Jordan1xJordan1x
in Installation, Antennas and Interference

Hi everyone,

I’ve been tinkering with audio & signal conditioning in SDR systems and found a candidate op amp I’m thinking of using with KiwiSDR: the MCP606T-I/OT. It’s a rail-to-rail, low-noise, relatively modern op amp. I’d love feedback from those with experience in SDR or RF audio systems on whether it’s a good fit or what caveats to watch out for.

My intended use & concerns

Use it in the audio output stages or in buffering / filtering after the detector path. Possibly insert it ahead of the DAC or as a post-filter amplifier. I’m concerned about how it handles low-level signals (microvolt level), noise, distortion, and overload behavior.

Has anyone used MCP606 or similar op amps in KiwiSDR or SDR audio chains? How did it perform under real use? For remote or embedded SDR boards, is there a trade-off you found more critical (power consumption vs noise floor)? Any layout tips, bypassing, or supply decoupling practices you’d absolutely insist on when using these op amps in RF / SDR systems?

This is just me exploring safer, cleaner front-end or audio path options and would appreciate real-world perspective.

Thanks!

J

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