Hi guys
I am presently using LM358 N( off set voltage of 2mv and offset current of 30nA )which used as non inverting amplifier(with gain of 10) to measure the very low voltage. but I am not getting what I expect from the output of lm358IC
this was the result :
firstly ...
result of small circuit done it in bread board ..
case 1> when input voltage is 0V . and getting output voltage more than >30MV.
case 2> when input voltage is 0.2v and getting output voltage more than 2.5 V.
I really don't know why LM358 showing this much of inaccuracy ...
please help on this ,what may be the root cause
secondly :
please suggest me good operational amplifier with high precision off-set voltage,current .
Thanks&Regards
Sunil