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Analysis and Research of CMOS Chopper Stabilized Amplifiers7 g# s* @' o& @1 s
YANGYin-tang ,HEBin ,ZHU Zhang-ming( v) E5 v7 U# C0 A" F( d7 K
(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China)
0 {( B+ _; g% x) K4 cAbstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation9 O; }2 Y% ?" W. l+ m/ L! p; @3 }1 `" @
principal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the
: ?4 ?! {2 b0 H. @; fphase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of' J( X0 m6 z% Q& u$ I% G
the chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,
/ X& o4 L( s7 _) w; ^! K' Wsome latest research findings and some new products utilizing chopper stabilization technique are given+ T& H9 W& \% `) A; [4 t) @/ F+ e
.Also some of the flaws and advantages of chopper stabilization technique and application fields of8 T, m$ ]( w6 D/ w
chopper stabilized amplifiers are stated .0 r+ P: U. u" f2 h* C8 m
; v, y/ }& o, H$ v/ x. M回覆後 可以下載PDF附件 權限10 & 2RDB$ J! \& p8 z$ L. N/ ?' m7 Z
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[ 本帖最後由 sjhor 於 2007-5-19 05:11 PM 編輯 ] |
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