Hi there! I'm developing low voltage 0.35um op amp (1.5V). Currently i'm doing AC analysis and the gain and phase margin are in negative values (-56.35dB and -112degrees). Why is it like that? I am using LTSPICE
hi guys, thanks to sadegh and waxtomato and other replies. Actually i'm using the wrong nodes. The order of my op amp subcircuit is not correct. It should be noninverting, inverting, Vin+,Vin-,Vout.
Thanks again frens! Good luck in your future undertakings