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A High Performance CMOS Operational Amplifier Implemented with
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FUYong-chao ,YANGYin-tang , ZHUZhang-ming , ZHULei
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; Y+ u7 y# P* a0 O( U; W. GAbstract : A high performance CMOS folded - cascoded operational amplifier with high open loop gain and low input+ U1 U" t, r! M+ G# T
offset voltage is presented on the basis of the analysis and summary of traditional folded-cascoded circuits .The design is9 y! S o( n5 @8 s
implemented in a standard 0.35μmCMOSmixed-signal process and simulatedwithHspice .The simulated results of the
: Z8 P$ ?! D- v+ coperational amplifier provide the DCopen loop gain with 95 dBand input offset voltagewith 0.023 mV,otherwisewith a
+ s. T& J4 {2 n" ^1 T3 G! A2 pF load capacity the phasemargin is 45.5°
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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�
) Z1 T. k# \3 i9 j+ B4 J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 μm6 n, V2 A8 H# W5 u5 \* @ E1 G0 y/ ^4 R
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����
% [- A! j& H. Q3 c4 ]0.023 mV,���容�2 pF �的相位裕度�45.5°。
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[ 本帖最後由 sjhor 於 2007-5-15 09:00 PM 編輯 ] |
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