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A High Performance CMOS Operational Amplifier Implemented with
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9 i2 p1 Y/ k+ H2 k. m1 L3 N- HFUYong-chao ,YANGYin-tang , ZHUZhang-ming , ZHULei: R7 i! l( i ~
(Microelectronics Institute ,XidianUniversity,Xi’an 710071 , China)
& ?% w6 d' C2 D. g9 o6 n) _5 f6 `6 [Abstract : A high performance CMOS folded - cascoded operational amplifier with high open loop gain and low input
O# w4 k* R% Z. _offset voltage is presented on the basis of the analysis and summary of traditional folded-cascoded circuits .The design is
5 u8 x* X7 O6 }+ ximplemented in a standard 0.35μmCMOSmixed-signal process and simulatedwithHspice .The simulated results of the
# {3 [# ]3 Y3 aoperational amplifier provide the DCopen loop gain with 95 dBand input offset voltagewith 0.023 mV,otherwisewith a
6 ~9 p5 ]2 ^2 { p& i2 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�
( ]2 R! {1 g$ ?/ z: i5 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 μm8 t6 w& i9 D! s) |# P( \
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����9 ]8 H8 u* C; I7 B) T3 V
0.023 mV,���容�2 pF �的相位裕度�45.5°。4 b0 ^; N6 l1 T9 H
* z# w; A3 G* r: R* O) ?# x- e看看中國人的發展唷! 她們的進步空間很大唷! sales price 3RDB
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. \( Z& l3 q- U1 J, E% [8 b; e0 i0 b[ 本帖最後由 sjhor 於 2007-5-15 09:00 PM 編輯 ] |
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