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Analysis and Research of CMOS Chopper Stabilized Amplifiers& U# L. T# d% D: @" U @
YANGYin-tang ,HEBin ,ZHU Zhang-ming4 k- U& j- K5 w2 O# z" @
(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China)# o4 l8 t, W" Y- G
Abstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation3 G' B4 e4 `# a: g# p
principal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the/ Y4 A9 ~& ~& }. S6 l0 c
phase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of
6 C* E2 W* s1 ^; Pthe chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,% M+ ? J6 i- V0 P" L! j
some latest research findings and some new products utilizing chopper stabilization technique are given9 }+ v" T/ Y4 M8 p7 K
.Also some of the flaws and advantages of chopper stabilization technique and application fields of V3 o, E# V5 B
chopper stabilized amplifiers are stated .' S0 \- l+ j4 M! }
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回覆後 可以下載PDF附件 權限10 & 2RDB& G' h( Z% ]; a: q
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[ 本帖最後由 sjhor 於 2007-5-19 05:11 PM 編輯 ] |
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