What is the input offset voltage in an opamp?

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sam khan

Member level 1
op amp

what is input offset voltage

Full Member level 3
Re: op amp

For an op-amp in a practical settings, if we tie the 2 input terminals to ground, we will still obtain a finite dc voltage exist at the output. This finite dc voltage is known as the input offset voltage. This arises due to the mismatches in the input differential stage within the op amp package itself and is classified as the DC imperfection of the op amp

Op amp output can be brought back to zero level by applying dc voltages of equal magnitude but opposite polarity

Hope it helps! I think you can also check out some electronics books...

sam khan

Points: 2

yjkwon57

Full Member level 4
Re: op amp

Input offset voltage is the voltages aplied to the inputs of OP amp so as to take out zero voltage from the output of it. Normally, it is less than 1 mV, a noise level.

sam khan

Points: 2

ender84567

Member level 4
Re: op amp

it is caused due to the pair of transitors in an opamps input stage (look at a transitor level model, the 741 is readily available) are not matched. it can be modeled with a battery in pspice on top of the standard modelsim model.

sam khan

Points: 2

Electronica

op amp

even if the inputs are given 0V ,then even a volatge appears this is called offset voltage

sam khan

Points: 2

hussain_kiet

Full Member level 5
Re: op amp

input offset voltages are basically applied at the input of an op amp to eliminate the noise generated internally at the output...
even if there is no input ie vin=0v still there exist some voltages in the form of noise at the output called output offset voltages...
input offset voltages are equal in magnitude and 180° out of phase of output offset voltages.....

sam khan

Points: 2

smith123

Member level 5
op amp

THE input offset voltages are basically applied at the input of an op amp to eliminate the noise generated internally at the output...

sam khan

Points: 2

suvendu

Full Member level 3
op amp

The voltages aplied to the inputs of OPAMP so as to get zero o/p voltage from the output terminals.

Points: 2