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Design >> Analog Design >> Two stage opamp differential feedback with different i/p and o/p common mode
https://designers-guide.org/forum/YaBB.pl?num=1668008345

Message started by vlsi_design on Nov 9^th, 2022, 7:39am

Title: Two stage opamp differential feedback with different i/p and o/p common mode
Post by vlsi_design on Nov 9^th, 2022, 7:39am

Hi, I am designing a two stage differential amplifier with different i/p common mode voltage and o/p common mode voltage. When I connect it in closed loop using resistors R2 and R1 , dc current will flow due to difference in common mode. Is it ok for dc current to flow when the amplifier will be used in closed loop ? I want to characterise the closed loop response like step response etc.. Thanks