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Analysis and Research of CMOS Chopper Stabilized Amplifiers! d% Q7 ]; J+ N' O8 G" e
YANGYin-tang ,HEBin ,ZHU Zhang-ming3 o# k* w8 u9 A3 \( [; Q4 u
(Microelectronics Institute ,Xidian University ,Xi’an 7 1 00 7 1 ,China)
* O2 K# V7 `7 C/ j0 d% Q( gAbstract :This paper introduces the differences of several offset canceling techniques .Thenmodulation
/ v& g, B" o1 B2 R& `8 A9 uprincipal of chopper stabilized amplifiers and the effects on their gains of the chopper frequency and the
) E( v* C: ~! K2 u3 G9 rphase shift are detailed .The values ofmodulated noise and offset are analyzed and implementation of1 Z) c# }& @2 R$ S3 t6 E( d; \
the chopper modulators given .Several techniques to reduce the residual offset are proposed .At last ,
' G4 L" ?- l/ R9 X9 Tsome latest research findings and some new products utilizing chopper stabilization technique are given
* s' Q7 y* x4 \.Also some of the flaws and advantages of chopper stabilization technique and application fields of
4 u6 e! g* F' R# N7 K3 dchopper stabilized amplifiers are stated .
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( z+ a% v8 A* r' {! Z/ M8 l回覆後 可以下載PDF附件 權限10 & 2RDB
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' K9 Z7 h/ V, ~$ h: U5 H4 }[ 本帖最後由 sjhor 於 2007-5-19 05:11 PM 編輯 ] |
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