Usman Hai
Full Member level 3
OTA feedback
Hi all,
For example I have op-amp specs for a 100MHz 10b pipelined ADC. I found out that ft=600MHz. However my feedback factor β=0.33 (say).
During the open-loop ac simulation, do I have to look at the PM @ ft (600MHz) or the closed-loop frequency (ft * β = 200Mhz).
This op-amp does not need to be unity-gain stable. I am confused...please help
Hi all,
For example I have op-amp specs for a 100MHz 10b pipelined ADC. I found out that ft=600MHz. However my feedback factor β=0.33 (say).
During the open-loop ac simulation, do I have to look at the PM @ ft (600MHz) or the closed-loop frequency (ft * β = 200Mhz).
This op-amp does not need to be unity-gain stable. I am confused...please help