Power Supply Rejection Ratio (PSRR) is the ratio of the change in supply voltage to the corresponding change in the output voltage it produces. It is the ability of the amplifier to reject common-mode signals. The output offset voltage is the DC voltage present at the output of the op-amp when the two input terminals are grounded or shorted.Ĭommon Mode Rejection Ratio (CMRR) of a differential amplifier is the ratio of the common-mode gain to differential-mode gain. What is called output offset voltage of an Op-amp? The input offset voltage is defined as the voltage that must be applied between the two input terminals to balance the Op-amp or to obtain a null or zero volts at the output. What is called input offset voltage of an Op-amp? List a few applications of the operational amplifier. Non Inverting Operational Amplifier Gain, A = 1 + Rf/ R Inverting Operational Amplifier Gain, A = – Rf / R Write the Gain formula for an inverting and non-inverting op-amp. The output voltage changes in the same direction as the input voltage. Non Inverting amplifier has an in-phase output with respect to the input. The output voltage changes in the opposite direction to the input voltage. Inverting amplifier has an inverted output which is 180 degrees out of phase with respect to the input.
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