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Analysis and Research of CMOS Chopper Stabilized Amplifiers1 ^4 a+ y5 ?9 T1 Q& c Z
YANGYin-tang ,HEBin ,ZHU Zhang-ming' [0 Q W9 k9 s: g. ~5 s
(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China)) Z' Z5 }* u# z' ]4 B7 Z# O
Abstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation
+ H4 G- W& F0 H) p l3 qprincipal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the
4 o) E5 q6 m9 A6 Q% dphase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of0 m, v) k/ [& I! p
the chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,
! c, M' |8 t. k5 b4 X, Xsome latest research findings and some new products utilizing chopper stabilization technique are given
+ v# f: M4 `) t, I3 K.Also some of the flaws and advantages of chopper stabilization technique and application fields of
, S7 T R1 a3 z4 q5 echopper stabilized amplifiers are stated .
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, ?9 ^* |6 G% X% @回覆後 可以下載PDF附件 權限10 & 2RDB
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, v7 ?$ j4 @/ F9 r) `[ 本帖最後由 sjhor 於 2007-5-19 05:11 PM 編輯 ] |
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