nodame123
Member level 1
Hi,
I have heard many places that we need to maximize the PSRR of the opamp used.But I don't get that point. We want the output of the opamp ,which is given to the gates of the CM ,to track variations in the supply so that the variations in the Vsg of the CM become smaller. So, that would imply a poor PSRR for the opamp. (assuming same power supply nodes goes to opamp also)
Am I missing something?
Thanks!
I have heard many places that we need to maximize the PSRR of the opamp used.But I don't get that point. We want the output of the opamp ,which is given to the gates of the CM ,to track variations in the supply so that the variations in the Vsg of the CM become smaller. So, that would imply a poor PSRR for the opamp. (assuming same power supply nodes goes to opamp also)
Am I missing something?
Thanks!