tedd
Newbie level 5
AS shown in the attachment is the common used bandgap, i want to simulate ac response to gain PM, when i disconnect the input of amplifier (X OR Y). the transfer function has positive sign and the PHASE of the open loop gain is from 0 to 180 when frequency is incresing. but when disconnect the gate of the PMOS transistors (Z node), the transfer function has minus sign, and the PHASE of the open loop gain is from 180 to 0. It seems incorrect. why does this accurs???
thank you very much [/url]
thank you very much [/url]