Hello,I have built an integrator circuit using AD8031 ash shown in the data sheet bellow.
In AC simulation i get 30dB while in pulse responce in trnasient i see that my signal is amplified only by 5 times.
Why is that? I am supposed to get 1V voltage level in the output of the transient responce.
Where did i go wrong?


https://www.analog.com/media/en/technical-documentation/data-sheets/AD8031_8032.pdf

 

No - you should get a -170mV output (gain is -R4/R3 = -170), but you can't get a -170mV output, because you don't have a negative supply.

 

Hello Ian0, I have changed the voltage input of the opamp so it will be fro 5 to -5.
but still my AC simulation says that ihave 45dB its
0.001*10*10*10*10*2
But as you can see bellow the transient only gives me-170mV
Why AC contradicts transient?
Thanks.

 

A gain of 170 is 44.6dB.