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Analysis and Research of CMOS Chopper Stabilized Amplifiers7 u W2 P# b4 f
YANGYin-tang ,HEBin ,ZHU Zhang-ming0 T3 H# T7 Y& B) D
(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China)
6 A7 N5 [6 a. _) A) d/ N# G- JAbstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation
. O. B! G5 |# u# }principal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the1 `% _3 u8 |# S4 Z4 c! Z" l( u
phase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of. f* @; B1 c& o) M# J0 v- @2 Q
the chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,2 T9 @2 _& R7 L9 W/ K5 |
some latest research findings and some new products utilizing chopper stabilization technique are given* Q- U) E6 t, U+ z
.Also some of the flaws and advantages of chopper stabilization technique and application fields of& Z" ]; S5 l. T4 A2 z
chopper stabilized amplifiers are stated .
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回覆後 可以下載PDF附件 權限10 & 2RDB$ M6 n8 `4 y, B
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[ 本帖最後由 sjhor 於 2007-5-19 05:11 PM 編輯 ] |
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