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Analysis and Research of CMOS Chopper Stabilized Amplifiers
% W6 h. v; Q) D; h1 x5 x* Z: bYANGYin-tang ,HEBin ,ZHU Zhang-ming% t0 }1 [) e5 k- [) o A, }
(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China)7 V+ q# m* d1 k
Abstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation
" j- A7 o* P0 M7 J" k1 fprincipal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the) n3 A. I: g- @# f
phase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of
9 j8 T5 i$ H. Q6 c" J1 dthe chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,
! A I( ~& J7 \0 G$ Y2 M' xsome latest research findings and some new products utilizing chopper stabilization technique are given! G' B9 [) J5 L W1 `
.Also some of the flaws and advantages of chopper stabilization technique and application fields of+ _5 B' A) L$ i% C' F/ @9 `
chopper stabilized amplifiers are stated ., P2 _ L0 L( I6 V6 L" E6 J
! I; x/ U( Q5 V* |( n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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