Re: op amp 741
johnnykhor said:
...yes, one of the leg is connected to ground. is it related to the performance of 741?
Sorry, what is hes Nr/name?
Its so to hear as you will tell: "my name is X" :-(...
Of course is not equal, where are the supply & input pins connected!
LM741 has plus & minus, double, to supply, pls REFER for DATA SHEETS!
You have offset in full connected circuit to adjust...
Which model is closely to 741? >> practically all are close or very better, these is a ca. 35 years old IC... For low DC signals are good input designed ICs to select_we proposed some, but your prof has to agree with one....
AD620 is a very good Idea, is explicit for signal processing developed...
You see, if you have a mountain tour, you will not select an old Ford T1 model_it was good, but nowadays are very better_cheaper & needs less power has higher speed...
Otherwise has an OP177/OP191 i.e absolute same pin out, dont need offset adjustment_their dont have offset pins!
https://en.wikipedia.org/wiki/Operational_amplifier
Input offset voltage
https://en.wikipedia.org/wiki/Input_offset_voltage
K.