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Contents \( V6 {* Y: }: B3 A
1 Introduction .................................................................................................................................. 3
5 s5 E# U2 e3 X( V6 d9 B% K3 L/ s1.1 Split Supply vs Single Supply.................................................................................................... 3
' R5 g& Z2 \7 z1.2 Virtual Ground.......................................................................................................................... 4
0 |- ^1 a) `/ Z1.3 AC-Coupling ............................................................................................................................. 4
, @1 h1 R% j. g$ `% f. }3 V1.4 Combining Op-Amp Stages ...................................................................................................... 5
2 z! J4 V- X& S8 B1.5 Selecting Resistor and Capacitor Values .................................................................................. 5% U, }8 k9 S* A5 s( O8 F
2 Basic Circuits ............................................................................................................................... 5# R. {+ p, S) {+ c
2.1 Gain......................................................................................................................................... 58 ^' d1 v+ n; j% Y7 z
2.2 Attenuation ............................................................................................................................... 6
+ Q2 A( E1 `/ l2 P- v* o2.3 Summing ................................................................................................................................. 9
8 v& g0 e0 G, S* E- z6 t7 {6 K, z2.4 Difference Amplifier .................................................................................................................. 9* U; W% W/ ^* f2 m
2.5 Simulated Inductor.................................................................................................................... 93 D2 d$ O$ u! L: s" V
2.6 Instrumentation Amplifiers ...................................................................................................... 10
) Q* Y# J: y! w3 w( O; u* m3 Filter Circuits ............................................................................................................................... 12
5 R* h/ l5 @: @3 g3 w3 z/ _3.1 Single Pole Circuits................................................................................................................. 13
# y) x) P; Y1 ?* P- n3.1.1 Low Pass Filter Circuits .............................................................................................................132 l7 g4 Z" A% S' T& c6 H! i% H
3.1.2 High Pass Filter Circuits.............................................................................................................13 c9 \% a5 T( s; Y& }9 \
3.1.3 All-Pass Filter ............................................................................................................................14
6 Z2 i$ [- d' M$ ]3.2 Double-Pole Circuits ............................................................................................................... 154 S- s. P/ t7 Q) [
3.2.1 Sallen-Key................................................................................................................................15) O5 ^/ W4 r( J& e5 f0 U* A& R8 f, b; ?( B
3.2.2 Multiple Feedback (MFB)...........................................................................................................16! @8 m8 s1 ~7 G$ e, R" \
3.2.3 Twin T ......................................................................................................................................17
! }7 u0 Q+ H4 H/ y3.2.4 Fliege .......................................................................................................................................20
' p( Q* I( r" x0 L. j$ Z0 u3.2.5 Akerberg-Mossberg Filter ..........................................................................................................22
/ F, N! |" Q1 f: z3.2.6 BiQuad .....................................................................................................................................24 [5 Y/ X+ [0 i3 _ u7 D" I
3.2.7 State Variable...........................................................................................................................25
' n" o4 N m7 {& V4 References.................................................................................................................................. 25
. ^8 _# H, A+ X l: a7 g+ k0 _Appendix A – Standard Resistor and Capacitor Values ................................................................. 26
, |$ |. H9 s3 a6 w5 m+ B2 t! ~, G& y0 R5 e- q3 |9 b# v- g1 Q) u- `& R
: f/ O0 n& L' L0 m' p$ T9 n( Bpdf 附件如後: 27頁
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E- X! x( ~8 j* i( Z( Z! Q% S+ J( g' G- W% _8 ?8 q7 Y
[ 本帖最後由 sjhor 於 2007-5-11 10:12 PM 編輯 ] |
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