lhlbluesky
Banned
comparator no feedback
if i use a two-stage opamp as a comparator(such as folded cascode + common source or telescopic cascode + common source) to get a high gain, then is compensation needed? if PM is small(smaller than 45 deg), is that ok? if not ok,then what's the effect and how to improve it?
besides, for the comparator design(two stage opamp), what parameters are important? and how to ensure that?
thanks for reply.
if i use a two-stage opamp as a comparator(such as folded cascode + common source or telescopic cascode + common source) to get a high gain, then is compensation needed? if PM is small(smaller than 45 deg), is that ok? if not ok,then what's the effect and how to improve it?
besides, for the comparator design(two stage opamp), what parameters are important? and how to ensure that?
thanks for reply.