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Analysis and Research of CMOS Chopper Stabilized Amplifiers( V' K, [2 ~9 E/ R9 {! L( l
YANGYin-tang ,HEBin ,ZHU Zhang-ming
6 O: v2 r9 _$ e M) s+ r. R(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China)8 L9 d3 ^- s& Y
Abstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation
8 k5 d8 D( _2 e7 D; x. P; [principal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the
0 f: m9 f5 T$ H0 V( Y _. J( fphase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of4 m$ }" A% y3 n$ B+ ^2 H
the chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,* D) g$ J6 V* z2 Q% `( Z
some latest research findings and some new products utilizing chopper stabilization technique are given0 Z" R* b6 Y5 I5 u5 [
.Also some of the flaws and advantages of chopper stabilization technique and application fields of" a8 m$ `2 K L& {* F: R
chopper stabilized amplifiers are stated .% w! ~+ o9 `$ \9 V+ q0 y0 C$ k. v" P
7 O$ s( d! M; N& z回覆後 可以下載PDF附件 權限10 & 2RDB
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[ 本帖最後由 sjhor 於 2007-5-19 05:11 PM 編輯 ] |
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