Uncategories Power Supply Rejection Ratio (PSRR)

Power Supply Rejection Ratio (PSRR)

Power Supply Rejection Ratio (PSRR) is the ability of an amplifier to maintain its output voltage as its DC power-supply voltage is varied.
  PSRR = (change in Vcc)/(change in Vout)
See also: Ripple rejection, which is degree of immunity from AC in the power supply.
Synonyms
  • Power Supply Rejection Ratio
                  The PSRR is defined as the ratio of the change in supply voltage in the op-amp to the equivalent (differential) output voltage it produces,[1] often expressed in decibels.[2][3][4] An ideal op-amp would have infinite PSRR. The output voltage will depend on the feedback circuit, as is the case of regular input offset voltages