pnanda65675
Member level 2
Im trying to simulate the open loop ac analyses & closed loop dc gain for the logarithmic amplifier which been attached below. Im not pretty sure about Testbench that i should create. Plz advice. The testbench that i;ve tried is by giving a cap & vsin in series wif a big inductor value at the feedback. i can obtain about 50' phase margin...but im not sure about how to achive a closed loop gain for this...since its a log amp, am i need to divide Vout/ ln Vin(feedback) ? Plz advice