> The output of an opamp is always referenced to its power supply, > regardless of the configuration. If the power supply is noisy, > the output is noisy.
Beyond a few kHz this may be true, but at lower frequencies even a low-grade opamp has excellent rejection of power supply noise. A good opamp data sheet will characterize the PSRR versus frequency. -- john, KE5FX _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
