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Analysis and Research of CMOS Chopper Stabilized Amplifiers
+ ]# ?9 e0 n) P$ {$ IYANGYin-tang ,HEBin ,ZHU Zhang-ming+ h" k; P8 Y {$ { p$ P6 _4 g
(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China)1 u2 h+ R4 p8 q$ \
Abstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation( F* y* p$ D- l2 F4 b$ E
principal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the
9 g5 }! j$ A* O) rphase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of1 E) A9 ~( }# N2 k1 {
the chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,
1 Y% e$ H' A- O, }some latest research findings and some new products utilizing chopper stabilization technique are given
2 z2 e$ K1 C0 ^( m2 {/ ?.Also some of the flaws and advantages of chopper stabilization technique and application fields of' ?& g# e3 d/ I
chopper stabilized amplifiers are stated .$ J4 A7 _8 ~8 E; i; O9 C
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回覆後 可以下載PDF附件 權限10 & 2RDB
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' D. D; k8 R% a/ H/ z[ 本帖最後由 sjhor 於 2007-5-19 05:11 PM 編輯 ] |
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