supply’s rejection expressed as a log ratio of output noise to input noise. PSRR provides a measure of
how well a circuit rejects ripple, of various frequencies, injected at its input. The ripple can be either from
the input supply such as a 50Hz/60Hz supply ripple, switching ripple from a DC/DC converter, or ripple
due to the sharing of an input supply between different circuit blocks on the board. In the case of LDOs,
PSRR is a measure of the regulated output voltage ripp
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LDO
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