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Analysis and Research of CMOS Chopper Stabilized Amplifiers& K+ g5 j" m% h k
YANGYin-tang ,HEBin ,ZHU Zhang-ming g* v( Z- y7 B( F
(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China)& ?1 d# |, Q4 L) n+ e7 d- P
Abstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation
( P4 n0 S& Y4 ]6 Eprincipal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the3 N9 `. m' t) \9 e% d$ \
phase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of
+ |! D6 v. e7 g# d, v# Sthe chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,( `0 O% w( \( A6 K% ]
some latest research findings and some new products utilizing chopper stabilization technique are given
. W0 N4 [/ I4 U3 l# D6 \. ^% k.Also some of the flaws and advantages of chopper stabilization technique and application fields of
5 a8 X" V* I; x* h& bchopper stabilized amplifiers are stated .2 Y: q" a& N- T# L! z! b8 V8 p
* h" c$ G1 _# s3 G0 w回覆後 可以下載PDF附件 權限10 & 2RDB) t! a2 M% Y3 b9 X/ b
4 F: a" W9 e2 O" U0 u$ Y9 K6 J% b* c: \4 _# |6 A
[ 本帖最後由 sjhor 於 2007-5-19 05:11 PM 編輯 ] |
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