標題: 一種基於前饋補償技術的高性能CMOS運算放大器[簡] [打印本頁] 作者: sjhor 時間: 2007-5-15 08:53 PM 標題: 一種基於前饋補償技術的高性能CMOS運算放大器[簡] A High Performance CMOS Operational Amplifier Implemented with " q% U/ G) H9 C! ]% kFeedforward Compensation Technology8 _: r" b* ` C; \3 f, V7 B
FUYong-chao ,YANGYin-tang , ZHUZhang-ming , ZHULei: v R6 w+ B3 Z
(Microelectronics Institute ,XidianUniversity,Xi’an 710071 , China)5 z& `) I2 `$ K- X
Abstract : A high performance CMOS folded - cascoded operational amplifier with high open loop gain and low input: p8 a h2 [8 [% p$ W/ ] q: x
offset voltage is presented on the basis of the analysis and summary of traditional folded-cascoded circuits .The design is & p" q* H- q! F0 v/ D5 ]. I4 Iimplemented in a standard 0.35μmCMOSmixed-signal process and simulatedwithHspice .The simulated results of the$ L5 [, u8 |* {2 b( p3 G
operational amplifier provide the DCopen loop gain with 95 dBand input offset voltagewith 0.023 mV,otherwisewith a . ?: J; @' c% U, w2 ~# @2 pF load capacity the phasemargin is 45.5°, J7 [3 k4 _; z
