raja.cedt wrote on Jun 21st, 2009, 12:53am:hi berti,
i have one doubt in systematic offset, lets say i have an opamp with output biased at 1v and assume now i have connected opamp in unity gain configuration and gave .7 as input, so now offset is .3/(open loop gain) ..is this systematic offset?
Hi Rajasekhar,
That is not a realistic scenario: since the opamp is in closed loop, the input referred offset is equal to the ouput offset / closed loop gain; assuming sufficiently large open loop gain. Therefore 0.7v input referred offset means 0.7v output referred offset, although obviously .
these are not realistic offset magnitudes.
Regards
Tosei