lhlbluesky
Banned
i have designed a gain-boosted fully differential opamp,but there are some questions,
in the main opamp,i used sc-cmfb,but the gain is not enough,so i added gain boosted auxiliary opamp A1 and A2,my question is :how to provide cmfb for A1\A2?
if my aim is low power,what kind of cmfb should i use?
sc-cmfb is ok? or some others? is there some simple cmfb circuit for A1\A2?
and how is cmfb realized? how to bias the nail transistor and the load transistor(if i use fully differential opamp of five transistors for A1\A2)?
please give me some advice.thanks.
in the main opamp,i used sc-cmfb,but the gain is not enough,so i added gain boosted auxiliary opamp A1 and A2,my question is :how to provide cmfb for A1\A2?
if my aim is low power,what kind of cmfb should i use?
sc-cmfb is ok? or some others? is there some simple cmfb circuit for A1\A2?
and how is cmfb realized? how to bias the nail transistor and the load transistor(if i use fully differential opamp of five transistors for A1\A2)?
please give me some advice.thanks.
