jimito13
Advanced Member level 1
Hi,
I am running a pole zero analysis via cadence spectre on a two stage opamp which consists of the classical diff pair with current mirror load and as second stage the classical common source/inverter configuration.My problem is that i cannot see the RHP zero that is created via the feedforward path of the miller compensation capacitor...All the poles and zeros are created from the two stages as i checked them separately and also i made a test without the compensation capacitor and the pole zero analysis gives the same results...does anybody have an idea what is going on?if needed i will provide more info/screenshots of the ckt.
Thanks in advance.
I am running a pole zero analysis via cadence spectre on a two stage opamp which consists of the classical diff pair with current mirror load and as second stage the classical common source/inverter configuration.My problem is that i cannot see the RHP zero that is created via the feedforward path of the miller compensation capacitor...All the poles and zeros are created from the two stages as i checked them separately and also i made a test without the compensation capacitor and the pole zero analysis gives the same results...does anybody have an idea what is going on?if needed i will provide more info/screenshots of the ckt.
Thanks in advance.