Murugesh_89
Full Member level 5
Hi,
I did analysis in lm386 opamp ic using proteus. I did it for three different gain values 20, 50, 200. In each of these case, the output of opamp is measured as 5.10783 V for the input at the non inverting amplifier of 0.00214857 V.
As per the gain definition i calculated the gain as Vout/Vin = 5.10783/0.00214857 = 2377. But in the datasheet they have stated that gain can be varied between 20 to 200. But for me it is coming as 2377. So i am wrong somewhere else!!!
Can anybody explain me why i am getting same output for same input with different gain values? and please let me know where i am messing?
Thanks,
Murugesh
I did analysis in lm386 opamp ic using proteus. I did it for three different gain values 20, 50, 200. In each of these case, the output of opamp is measured as 5.10783 V for the input at the non inverting amplifier of 0.00214857 V.
As per the gain definition i calculated the gain as Vout/Vin = 5.10783/0.00214857 = 2377. But in the datasheet they have stated that gain can be varied between 20 to 200. But for me it is coming as 2377. So i am wrong somewhere else!!!
Can anybody explain me why i am getting same output for same input with different gain values? and please let me know where i am messing?
Thanks,
Murugesh