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A High Performance CMOS Operational Amplifier Implemented with
9 t8 u7 `& T' N) U+ _/ GFeedforward Compensation Technology
, F w3 C h) P& q" s8 \& C5 B% n6 BFUYong-chao ,YANGYin-tang , ZHUZhang-ming , ZHULei
7 _" j- b: N/ j" P2 t(Microelectronics Institute ,XidianUniversity,Xi’an 710071 , China)$ a0 ?: Y8 u* ~7 W
Abstract : A high performance CMOS folded - cascoded operational amplifier with high open loop gain and low input1 g2 s* `8 B+ t; G2 n0 F
offset voltage is presented on the basis of the analysis and summary of traditional folded-cascoded circuits .The design is
: I* y+ A- y' J: X# a3 Wimplemented in a standard 0.35μmCMOSmixed-signal process and simulatedwithHspice .The simulated results of the
3 @) m( @6 u" `7 f! Yoperational amplifier provide the DCopen loop gain with 95 dBand input offset voltagewith 0.023 mV,otherwisewith a+ L7 C6 ^8 |1 r# V
2 pF load capacity the phasemargin is 45.5°6 H& A0 _; m x+ l
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摘要:基于��CMOS 折�共源共��算放大器的分析和��,�用前���技�,��了一种高性能CMOS 折�$ T; c3 W |$ G
共源共��算放大器,不�保�了高��增益,而且�大大�小了�放的�入失���。��采用TSMC 0.35 μm
! Z( y6 ?, M+ ~7 H$ s; A* K3 j, m混合信�CMOS 工���,采用Hspice �行仿真,仿真�果表明�放的直流��增益�95 dB ,�入失����
+ B1 C3 {* J# Z2 ?/ v7 A0.023 mV,���容�2 pF �的相位裕度�45.5°。! i* \" E' j; H; M" I& D% Q
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* i4 p2 H6 R3 y: D3 I1 t[ 本帖最後由 sjhor 於 2007-5-15 09:00 PM 編輯 ] |
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