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Contents
% Q/ k, N t/ s& F0 [1 Y5 Y1 Introduction .................................................................................................................................. 3% E; F q4 I9 R/ w% c
1.1 Split Supply vs Single Supply.................................................................................................... 3
# o# q1 A) u* J7 d1.2 Virtual Ground.......................................................................................................................... 4! v. k* B% [2 t
1.3 AC-Coupling ............................................................................................................................. 49 |- B5 u! v, r
1.4 Combining Op-Amp Stages ...................................................................................................... 5
; H7 I9 k' |# D* p. }5 I. b1.5 Selecting Resistor and Capacitor Values .................................................................................. 58 n4 |# @7 W- G$ a% Y- l! X, T7 S- W
2 Basic Circuits ............................................................................................................................... 5
* b* A' z. a& u% O2.1 Gain......................................................................................................................................... 58 V& V5 G% z3 e% h, L: f/ V
2.2 Attenuation ............................................................................................................................... 6
4 J6 O5 w1 N* _6 r6 O- [8 {2.3 Summing ................................................................................................................................. 9
7 i5 j4 ]8 h; S$ ]! ^2.4 Difference Amplifier .................................................................................................................. 9
3 `& o+ J0 x7 q2.5 Simulated Inductor.................................................................................................................... 9/ O2 Z# Y/ U, R, l u5 a
2.6 Instrumentation Amplifiers ...................................................................................................... 10% [8 g" E7 O/ u/ s
3 Filter Circuits ............................................................................................................................... 12& w! h9 q' @- o3 V# q' A
3.1 Single Pole Circuits................................................................................................................. 137 e& `9 k3 N J, [# c7 J
3.1.1 Low Pass Filter Circuits .............................................................................................................13
0 s! F' y! f8 n( n3 q3.1.2 High Pass Filter Circuits.............................................................................................................13
+ E* y) y0 l6 ]) V3.1.3 All-Pass Filter ............................................................................................................................14
0 l; m0 E$ y5 r8 R/ J L- N/ M3.2 Double-Pole Circuits ............................................................................................................... 15
9 ?5 h5 A1 z% [# ?7 t3.2.1 Sallen-Key................................................................................................................................15
' r3 X, K1 p. a7 S3.2.2 Multiple Feedback (MFB)...........................................................................................................169 g! F! V( i2 x [, G3 h6 {( c0 u2 z
3.2.3 Twin T ......................................................................................................................................17
! S( \! P0 J) Z0 b5 i3 m3.2.4 Fliege .......................................................................................................................................20
0 g% v3 s Y/ V; U# _; w3.2.5 Akerberg-Mossberg Filter ..........................................................................................................229 k" W1 P- @4 \4 m9 ~
3.2.6 BiQuad .....................................................................................................................................24
1 Y) ~. m4 I6 p4 I5 m) @' u$ b) m3.2.7 State Variable...........................................................................................................................25+ x1 G+ t$ |/ _
4 References.................................................................................................................................. 25
6 C$ }2 D: c; I' a# BAppendix A – Standard Resistor and Capacitor Values ................................................................. 26
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[ 本帖最後由 sjhor 於 2007-5-11 10:12 PM 編輯 ] |
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