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Design >> Analog Design >> Is the method right to judge the CMFB's stability?
https://designers-guide.org/forum/YaBB.pl?num=1182242579

Message started by didibabawu on Jun 19^th, 2007, 1:42am

Title: Is the method right to judge the CMFB's stability?
Post by didibabawu on Jun 19^th, 2007, 1:42am

The diagram of a full differential opamp with CMFB is in the left
I want to know whether it is stable, I broken the point a and make
the cmfb point as the input and point a as the output as can be seen in the right.
Cla is the load of the point a.
Can I judge the stability of the CMFB circuit by seeing the bandwidth and phase margin of the point out?
Thank you very much.

Title: Re: Is the method right to judge the CMFB's stabil
Post by aaron_do on Jun 19^th, 2007, 8:17am

CMFB was recently discussed...

http://www.designers-guide.org/Forum/YaBB.pl?num=1163619752