6.8 EFFECT OF NON-IDEAL PROPERTIES OF OPAMP ON CIRCUIT PERFORMANCE

A practical Opamp has finite input resistance and non-zero output resistance. It has finite gain and finite bandwidth. It has non-zero common mode gain. Its output voltage and output current are limited to some finite values that depend on the supply voltage used. Its output is incapable of changing at a rate faster than a finite rate that is specified as its slew rate. It has non-zero output offset and non-zero input bias currents.

These non-idealities in the practical Opamp result in a degraded performance in circuits that have embedded Opamps. We consider the impact of some of these non-ideal properties on the performance of non-inverting and inverting amplifiers made using ...

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