Electronics > Beginners

Current Sink with CFBOA

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stcoso:
I tried adding a "C12" in the past, to stop oscillation... It made the problem worse  ;D. I'm not an EE but capacitors between output and input of a CFBOA introduces poles in the loop response making things unstable.

Wouldn't C13 form a low pass filter ( with the output resistor of my func gen) ?

Anyway... I've redone my pcb with a little bit more care and seems like the oscillation are gone.


Would still love to see if this LEDs can be driven faster than this ;D

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