Sep 11, 2009 #1 K kazu_kazu Newbie level 4 Joined Apr 30, 2009 Messages 6 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,312 Dear all member, I design 1.5 bit MDAC,: using gain boosting folded cascode opamp DC gain : 80 dB UGB : 100MHz but after I set it up with sc circuit, (2 precission multiply ) I can't get the rsult, sometimes output is bigger 1. ... Vin but sometimes output even smaller than input. do anybody knows what is the problem? thank you very much kazu )
Dear all member, I design 1.5 bit MDAC,: using gain boosting folded cascode opamp DC gain : 80 dB UGB : 100MHz but after I set it up with sc circuit, (2 precission multiply ) I can't get the rsult, sometimes output is bigger 1. ... Vin but sometimes output even smaller than input. do anybody knows what is the problem? thank you very much kazu )
Sep 14, 2009 #2 B BackerShu Member level 3 Joined Dec 22, 2007 Messages 57 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,286 Location USA Activity points 1,795 Some specific descriptions about your schematic or netlists may help to do locate your problem.