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op amp terminology



OPEN LOOP GAIN

It is the voltage gain of an OP AMP when NO Feedback is applied.

INPUT OFFSET VOLTAGE

It is the Voltage that must be applied between the input terminals of an OP AMP to make the output zero.

INPUT OFFSET CURRENT

It is the algebraic difference between the Current through Inverting and Non-Inverting input terminals.

INPUT BIAS CURRENT

Average of the currents that flow into the Inverting and Non-Inverting input terminals of the OP AMP.

INPUT CAPACITANCE

Capacitance that can be measured at either the Inverting or Non-Inverting terminal with the other terminal grounded.

OUTPUT OFFSET VOLTAGE

It is the DC Voltage present at the output terminals when both the input terminals are grounded.

SLEW RATE

It is the Maximum rate of change of output voltage with respect to time.

POWER SUPPLY REJECTION RATIO

Ratio of the change in input offset voltage due to the change in supply voltage producing it, keeping the other supply voltage constant. It is also called as Power supply sensitivity.

COMMON MODE REJECTION RATIO

Ratio of Differential voltage gain Ad to the common mode voltage gain Acm.

SUPPLY VOLTAGE REJECTION RATIO

Change in OP AMP's input offset voltage caused by the variations in supply voltage.

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