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Contents
' \. j% k: d) U1 Introduction .................................................................................................................................. 3! j. H4 A+ _3 }$ b+ w9 n6 j
1.1 Split Supply vs Single Supply.................................................................................................... 3
& k' Q$ t5 E/ n& X" u2 l: ^* p1.2 Virtual Ground.......................................................................................................................... 4
5 N3 N* Q8 C X- f$ c1.3 AC-Coupling ............................................................................................................................. 49 @6 l0 _2 M# \# B
1.4 Combining Op-Amp Stages ...................................................................................................... 5: d4 g. C+ r5 ?4 o0 r! }
1.5 Selecting Resistor and Capacitor Values .................................................................................. 5
$ F- m+ Q) W1 V6 t3 B+ g( Q2 Basic Circuits ............................................................................................................................... 5
$ P; l. {! w) M/ I/ M2.1 Gain......................................................................................................................................... 5# L# y! i" w0 p* ^$ p# i
2.2 Attenuation ............................................................................................................................... 60 Q- A a7 D3 a7 b3 p$ N8 `" o
2.3 Summing ................................................................................................................................. 9" D, @# W) x' o+ _
2.4 Difference Amplifier .................................................................................................................. 9
0 y( H6 a1 G- b2 f4 [! j0 U2.5 Simulated Inductor.................................................................................................................... 9) M7 f* b* X$ q0 S! V3 Q/ z# R
2.6 Instrumentation Amplifiers ...................................................................................................... 108 z6 `6 s. O3 l3 u( y
3 Filter Circuits ............................................................................................................................... 12
1 f4 {4 Q+ ]" `. s) C) f: R3.1 Single Pole Circuits................................................................................................................. 13. A5 P- B5 M! p/ T- r% f
3.1.1 Low Pass Filter Circuits .............................................................................................................13
4 d5 [# K& \6 D+ B0 ?3.1.2 High Pass Filter Circuits.............................................................................................................131 e( v) }- }6 \' ~1 t7 u
3.1.3 All-Pass Filter ............................................................................................................................14
) `3 x; d; R8 P3.2 Double-Pole Circuits ............................................................................................................... 15
( B3 ?0 R& O1 n& c; A6 ^. C3.2.1 Sallen-Key................................................................................................................................152 w* Z/ t) `, a0 U4 t( s
3.2.2 Multiple Feedback (MFB)...........................................................................................................16: l3 |- n/ z1 C1 |3 |# S9 b
3.2.3 Twin T ......................................................................................................................................17% \$ s6 j7 }) e& i- ?4 A. i
3.2.4 Fliege .......................................................................................................................................204 H- D$ i# i1 _
3.2.5 Akerberg-Mossberg Filter ..........................................................................................................22
9 i: i) D8 O+ v. e3.2.6 BiQuad .....................................................................................................................................24
# L% J8 R/ r3 X% K& g" y0 ~3.2.7 State Variable...........................................................................................................................25
# J) j# @1 a/ x* I: M9 r+ u4 References.................................................................................................................................. 25
* P# ~2 n6 d" a2 V( w9 w! Y$ BAppendix A – Standard Resistor and Capacitor Values ................................................................. 266 H+ m& H! n. f# Y+ E: D% o
# s# T: P% y7 W* ]* P# P
* G; m( F5 |6 }6 a+ c' l$ Xpdf 附件如後: 27頁( s! \# c- ~* t% E
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8 B" X1 N3 F& [" I0 q( H5 Y! D" s0 w- J9 Q, k2 i- S6 G
[ 本帖最後由 sjhor 於 2007-5-11 10:12 PM 編輯 ] |
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