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Analysis and Research of CMOS Chopper Stabilized Amplifiers
$ b* e7 B; D4 F# w" U6 sYANGYin-tang ,HEBin ,ZHU Zhang-ming G* u# M) R3 x7 s3 m
(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China), a; {2 k& b3 H
Abstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation2 V% F- h1 R% V! y
principal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the
& b: _' ^2 y9 x0 ?2 h% j/ x& a, a' jphase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of1 u6 ]! ?8 U' V# m- f e
the chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,; ~) ?: J! ?6 A- }0 H
some latest research findings and some new products utilizing chopper stabilization technique are given7 v$ e8 V, D. V l6 @ R# x9 y, }
.Also some of the flaws and advantages of chopper stabilization technique and application fields of
6 x8 _* @1 m& j8 g6 Ochopper stabilized amplifiers are stated .0 l0 H. ^4 h( l8 ?
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回覆後 可以下載PDF附件 權限10 & 2RDB
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% J1 g' [3 V) I3 m4 S; n[ 本帖最後由 sjhor 於 2007-5-19 05:11 PM 編輯 ] |
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