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Contents
" n) b: q; X; r6 c' Y0 z1 Introduction .................................................................................................................................. 3
. V1 z! s4 q1 M1.1 Split Supply vs Single Supply.................................................................................................... 3 r! K% [4 G, O$ m% C% X! X
1.2 Virtual Ground.......................................................................................................................... 4$ R7 N! f, r: |' Z/ ~8 W2 n# y9 J2 k
1.3 AC-Coupling ............................................................................................................................. 4
" [& K' Z' J- @" M b! n4 E: m1.4 Combining Op-Amp Stages ...................................................................................................... 5
% c2 b! C$ h1 f3 }% N1.5 Selecting Resistor and Capacitor Values .................................................................................. 52 O5 K. i/ ]5 \( C
2 Basic Circuits ............................................................................................................................... 5 A7 Y6 M! U" Y# ]
2.1 Gain......................................................................................................................................... 5
q1 j% }# m% v5 l2.2 Attenuation ............................................................................................................................... 6; C* }. @6 ?" [& \! F) t. q
2.3 Summing ................................................................................................................................. 9+ w: r$ ^. i- D" V+ L* o) R: ]& ?
2.4 Difference Amplifier .................................................................................................................. 9
+ o+ x& r- K, K# r2.5 Simulated Inductor.................................................................................................................... 9
. b/ P4 y- n1 x1 l' M: y9 M2.6 Instrumentation Amplifiers ...................................................................................................... 10! k8 _% c( k4 z* \
3 Filter Circuits ............................................................................................................................... 12
2 W1 m6 |3 n) {) U9 N8 i3.1 Single Pole Circuits................................................................................................................. 13
/ e/ t( M4 ^! g- J& ~% ~3.1.1 Low Pass Filter Circuits .............................................................................................................13) Z( B# ]) U- c% U3 ^; n2 f3 q& h2 }+ p
3.1.2 High Pass Filter Circuits.............................................................................................................133 p& K0 a# J6 f9 N5 M4 n9 v' O
3.1.3 All-Pass Filter ............................................................................................................................143 t Q! L( F3 O
3.2 Double-Pole Circuits ............................................................................................................... 15
* N$ }8 I- l4 H7 N1 U; F: o3.2.1 Sallen-Key................................................................................................................................15
! ` L+ l) c! Q8 Z3.2.2 Multiple Feedback (MFB)...........................................................................................................16
, l9 P# J- Q# [7 _6 c! G) R! D3.2.3 Twin T ......................................................................................................................................17
' b1 Q& r% I+ V( ]6 Q, R3.2.4 Fliege .......................................................................................................................................20
4 z. k1 N0 F. o& Q3.2.5 Akerberg-Mossberg Filter ..........................................................................................................22
1 _# `- S* I% B! D3 s3.2.6 BiQuad .....................................................................................................................................24: E# g a# H; a. l
3.2.7 State Variable...........................................................................................................................251 E9 R, R [1 I: c0 [
4 References.................................................................................................................................. 25& G$ @. z- K) I' k
Appendix A – Standard Resistor and Capacitor Values ................................................................. 26
5 V! g7 ]& G0 F7 }, a9 \+ h7 f4 K& h1 Z. W- L
+ f4 ]( x$ n( y0 L9 k; Apdf 附件如後: 27頁' x7 c& |/ |4 |8 O) ?+ O
. [0 ~* h! A5 l: O6 \& T* D; R# I3 a: `% z8 ?, I* G
% G8 j& Y5 ^- Z4 ^: ]5 h
[ 本帖最後由 sjhor 於 2007-5-11 10:12 PM 編輯 ] |
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