Question

A standard inverting op-amp circuit has an R1 of 10 kΩ and an Rf of 220 kΩ. If the offset current is 100 nA the output offset voltage due to this current is ________.

Answer 1

Answer:

The value is  $V_{os} = 0.001 \ V$

Explanation:

From the question we are told that

     The circuit resistance is  $R_1 = 10 \ k \Omega$

     The feedback resistance  is  $R_f = 220 \ k \Omega$

      The offset current is  $I_{os } = 100 \ nA = 100 * 1)^{-9} \ A$

Generally the offset voltage is mathematically reparented as

           $V_{os} = R_f * I_{os}$

=>        $V_{os} = 10 *10^{3}* 100 *10^{-9}$

=>        $V_{os} = 0.001 \ V$