chapter9 - โ€ซืคืจื 9 ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซ]4 : โ€ช[ CDKโ€ฌโ€ฌ โ€ซืคืจืง 9:โ€ฌ โ€ซืชืื•ืจ ื›ืœืœื™โ€ฌ โ€ซื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™ )= ืžื’ื‘ืจ ืฉืจืช( ื”ื•ื ืื‘ืŸ ื‘ื ื™ืŸ ืžืจื›ื–ื™ืช ื‘ืžืขื’ืœื™ื ืืœืงื˜ืจื•ื ื™ื™ืโ€ฌ โ€ซืื ืœื•ื’ื™ื™ื.โ€ฌ โ€ซื›ืขืงืจื•ืŸ ื–ื”ื• ืžื’ื‘ืจ ืžืชื— ื‘ืขืœ ื›ื ื™ืกื” ื“ื™ืคืจื ืฆื™ืืœื™ืช, ื›ืžืชื•ืืจ ื‘ืฉืจื˜ื•ื˜:โ€ฌ โ€ซ1.9.โ€ฌ โ€ซ1โ€ชvโ€ฌโ€ฌ โ€ซ2โ€ชvโ€ฌโ€ฌ โ€ซื”ื“ืง ื™ื™ื—ื•ืกโ€ฌ โ€ซืื“ืžื”(โ€ฌ โ€ซ)โ€ฌ โ€ซโ€ชvoutโ€ฌโ€ฌ โ€ซ) 1 โ€ชvout = A(v 2 -vโ€ฌโ€ฌ โ€ซ1>>โ€ชAโ€ฌโ€ฌ โ€ซื›ืœ ื”ืžืชื—ื™ื ื”ื ื‘ื™ื—ืก ืœื”ื“ืง ื”ื™ื™ื—ื•ืก )ื”ืื“ืžื”(. ื‘ื ื•ืกืฃ ืงื™ื™ืžื™ื ืžืชื—ื™ ื”ื–ื ื” )ื‘ืื•ืคืŸโ€ฌ โ€ซืื•ืคื™ื™ื ื™โ€ฌ โ€ซ51 ยฑ ื•ื•ืœื˜( ืฉืื™ื ื ืžื•ืคื™ืขื™ื ื‘ืฉืจื˜ื•ื˜.โ€ฌ โ€ซืกื›ื™ืžืช ื”ืชืžื•ืจื” ืฉืœ ืžื’ื‘ืจ ืื•ืคืจื˜ื™ื‘ื™ ืื™ื“ื™ืืœื™:โ€ฌ โ€ซ1โ€ชvโ€ฌโ€ฌ โ€ซื—ื‘ ืจ ืœ ื’ืœโ€ฌ โ€ซื• ืžืขโ€ฌ โ€ซ2โ€ชvโ€ฌโ€ฌ โ€ซ+โ€ฌ โ€ซ) โ€ช_ v = A(v -vโ€ฌโ€ฌ โ€ซโ€ชoutโ€ฌโ€ฌ โ€ซ12โ€ฌ โ€ซื”ื”ื’ื‘ืจ โ€ช Aโ€ฌื”ื™ื ื• ื’ื‘ื•ื” ื‘ื™ื•ืชืจ )ืื•ืคื™ื™ื ื™ 5 01 (.โ€ฌ โ€ซื”ืขืจื•ืชโ€ฌ โ€ซื”ื ื—ื•ืช ืื™ื“ืืœื™ื•ืช: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™ ื”ื™ื ื• ืžื’ื‘ืจ ืžืชื— "ื›ืžืขื˜ ืื™ื“ืืœื™",โ€ฌ โ€ซื”ืžืฆื˜ื™ื™ืŸ ื‘ืชื›ื•ื ื•ืช ื”ื‘ืื•ืช:โ€ฌ โ€ซื”ืชื ื’ื“ื•ืช ื›ื ื™ืกื” ื’ื‘ื•ื”ื” ื‘ื™ื•ืชืจ )ื–ืจืžื™ ื›ื ื™ืกื” ื ืžื•ื›ื™ื ื‘ื™ื•ืชืจ(.โ€ฌ โ€ซโ€ช.Iโ€ฌโ€ฌ โ€ซ1.โ€ฌ โ€ซ9-1โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซื”ืชื ื’ื“ื•ืช ื™ืฆื™ืื” ื ืžื•ื›ื”โ€ฌ โ€ซืื ื• ืžืชื™ื™ื—ืกื™ื ืคื” ืจืง ืœืจื›ื™ื‘ ื”ืื™ื“ื™ืืœื™, ื‘ืขืœ ื”ืชื ื’ื“ื•ืช ื›ื ื™ืกื” ืื™ื ืกื•ืคื™ืชโ€ฌ โ€ซืืคืก.โ€ฌ โ€ซื•ื”ืชื ื’ื“ื•ืช ื™ืฆื™ืื”โ€ฌ โ€ซโ€ช.IIโ€ฌโ€ฌ โ€ซ9-2โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซืื•ืคื™ื™ืŸ ื”ื”ื’ื‘ืจ: ื”ืื•ืคื™ื™ืŸ ื”ืžืœื ื ืจืื” ื›ืš:โ€ฌ โ€ซ2.โ€ฌ โ€ซโ€ชvoutโ€ฌโ€ฌ โ€ซโ€ชAโ€ฌโ€ฌ โ€ซ) 1 โ€ช(v 2- vโ€ฌโ€ฌ โ€ซืจื•ื•ื™ื”โ€ฌ โ€ซืฉืœื™ืœื™ืชโ€ฌ โ€ซืชื—ื•ืโ€ฌ โ€ซืœื ื™ืืจื™โ€ฌ โ€ซืจื•ื•ื™ื”โ€ฌ โ€ซื—ื™ื•ื‘ื™ืชโ€ฌ โ€ซื”ืื•ืคื™ื™ืŸ ืžืจืื” ื›ื™ ืœืžื’ื‘ืจ ืฉื ื™ ืชื—ื•ืžื™ ืคืขื•ืœื”:โ€ฌ โ€ซื”ืชื—ื•ื ื”ืœื™ื ืืจื™ โ€“ ืชื—ื•ื ื”ืคืขื•ืœื” ื”"ืจื’ื™ืœ".โ€ฌ โ€ซืชื—ื•ืžื™ ื”ืจื•ื•ื™ื” โ€“ ืฉื‘ื”ื ืžืชื— ื”ื™ืฆื™ืื” ื ืžืฆื ื‘ืขืจื›ื• ื”ืžื›ืกื™ืžืœื™ ืื•โ€ฌ โ€ซื”ืžื™ื ื™ืžืœื™ )ื ืงื‘ืขื™ื ืขืœ ื™ื“ื™ ืžืชื— ื”ื”ื–ื ื”(.โ€ฌ โ€ซืื ื• ื ืชืขื ื™ืŸ ืจืง ื‘ืคืขื•ืœื” ื‘ืชื—ื•ื ื”ืœื™ื ืืจื™ ื•ื ื ื™ื— ื›ื™ ื”ืžื’ื‘ืจ ืื™ื ื• ื‘ืจื•ื•ื™ื”.โ€ฌ โ€ซืžื‘ื ื”: ืžื’ื‘ืจ ืื•ืคืจื˜ื™ื‘ื™ ื˜ื™ืคื•ืกื™ ื™ืžื•ืžืฉ ืขืœ ื™ื“ื™ ืžืกืคืจ ืจื‘ ืฉืœ ืจื›ื™ื‘ื™ื -โ€ฌ โ€ซื ื™ืชืŸ ืœืจื•ื›ืฉื•โ€ฌ โ€ซื‘ืขื™ืงืจ ื˜ืจื ื–ื™ืกื˜ื•ืจื™ื ื•ื ื’ื“ื™ื โ€“ ื‘ื˜ื›ื ื•ืœื•ื’ื™ื” ืฉืœ ืžืขื’ืœื™ื ืžืฉื•ืœื‘ื™ื.โ€ฌ โ€ซื›ืจื›ื™ื‘ ืžืฉื•ืœื‘ )"ื’'ื•ืง"( ื”ื›ื•ืœืœ ืžื’ื‘ืจ ืื—ื“ ืื• ื™ื•ืชืจ.โ€ฌ โ€ซ3.โ€ฌ โ€ซโ€ช.Iโ€ฌโ€ฌ โ€ซโ€ช.IIโ€ฌโ€ฌ โ€ซ9-3โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซืžืขื’ืœื™ื ื‘ืกื™ืกื™ื™ืโ€ฌ โ€ซ2.9.โ€ฌ โ€ซืขืœ ื™ื“ื™ ื—ื™ื‘ื•ืจ ืžืชืื™ื ืฉืœ ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™ ื ื™ืชืŸ ืœืžืžืฉ ืžื’ื•ื•ืŸ ื”ืชืงื ื™ื, ื›ื’ื•ืŸ:โ€ฌ โ€ซืžื’ื‘ืจ ืžืชื—, ื‘ืขืœ ื”ื’ื‘ืจ ืจืฆื•ื™.โ€ฌ โ€ซืžื’ื‘ืจ ื–ืจื.โ€ฌ โ€ซืžืกื›ืžื™ ืžืชื—โ€ฌ โ€ซืžืกื ื ื™ื )โ€ช.(Filtersโ€ฌโ€ฌ โ€ซื—ื™ื‘ื•ืจ ื›ื–ื” ื™ื›ืœื•ืœ ืชืžื™ื“ ืžืฉื•ื‘ ืฉืœื™ืœื™, ื›ืœื•ืžืจ ื—ื™ื‘ื•ืจ ื—ื™ืฆื•ื ื™ ื‘ื™ืŸ ื”ื“ืง ื”ื™ืฆื™ืื” ืœื›ื ื™ืกืชโ€ฌ โ€ซื”ืžืฉื•ื‘ ื”ืฉืœื™ืœื™ )ื‘ื ื™ื’ื•ื“ ืœืžืฉื•ื‘ ื—ื™ื•ื‘ื™( ืžื‘ื˜ื™ื— ืขื‘ื•ื“ื” ื™ืฆื™ื‘ื” ื‘ืชื—ื•ืโ€ฌ โ€ซื”ืžื™ื ื•ืก.โ€ฌ โ€ซื”ืœื™ื ืืจื™ ืฉืœ ื”ืžื’ื‘ืจ.โ€ฌ โ€ซืขื•ืงื‘ ืžืชื—โ€ฌ โ€ซโ€ช.Iโ€ฌโ€ฌ โ€ซโ€ขโ€ฌ โ€ซโ€ขโ€ฌ โ€ซโ€ขโ€ฌ โ€ซโ€ขโ€ฌ โ€ซืžืžืขื’ืœโ€ฌ โ€ซื›ื ื™ืกื”โ€ฌ โ€ซ1 โ€ชv in = vโ€ฌโ€ฌ โ€ซ2โ€ชvโ€ฌโ€ฌ โ€ซโ€ชAโ€ฌโ€ฌ โ€ซโ€ชvoutโ€ฌโ€ฌ โ€ซืœืžืขื’ืœโ€ฌ โ€ซื™ืฆื™ืื”โ€ฌ โ€ซ2โ€ชvout = vโ€ฌโ€ฌ โ€ซื‘ื—ื™ื‘ื•ืจ ื–ื” ืžืชืงื™ื™ื:โ€ฌ โ€ซื”ืฆื‘ื” ื‘ืื•ืคื™ืŸ ื”ื”ื’ื‘ืจ ) 2โ€ช vout = A( v1 โˆ’ vโ€ฌื ื•ืชื ืช:โ€ฌ โ€ซ) โ€ชv out = A( v1 โˆ’ voutโ€ฌโ€ฌ โ€ซ1โ€ชv out ( 1 + A) = Avโ€ฌโ€ฌ โ€ซ= โ€ชv outโ€ฌโ€ฌ โ€ซโ€ชAโ€ฌโ€ฌ โ€ซ1โ€ชโ‹… vโ€ฌโ€ฌ โ€ซโ€ช1+ Aโ€ฌโ€ฌ ื ื–ื›ื•ืจ ื›ื™ 1 >> โ€ช , Aโ€ฌื”ืฆื‘ืช โˆž โ†’ โ€ช Aโ€ฌื ื•ืชื ืชโ€ฌ โ€ซโˆ’โ€ฌ โ€ซ1โ€ช. vout ~ vโ€ฌโ€ฌ โ€ซ)โ€ช (bufferโ€ฌื‘ื™ืŸ ืžืขื’ืœ ื”ื›ื ื™ืกื” ืœืžืขื’ืœโ€ฌ โ€ซ)ืขืงื‘โ€ฌ โ€ซืžืขื’ืœ ื–ื” ืžืฉืžืฉ ื›ื—ื•ืฆืฅโ€ฌ โ€ซืฉื™ืžื•ืฉ :โ€ฌ โ€ซื”ื™ืฆื™ืื”. ื”ื•ื ืื™ื ื•โ€ฌ โ€ซืžืฉืคื™ืข ืขืœ ื”ืžืชื— 1โ€ช vโ€ฌื”ืžืชืงื‘ืœ ืžืžืขื’ืœ ื”ื›ื ื™ืกื”โ€ฌ โ€ซ9-4โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซืœืžืชื—โ€ฌ โ€ซื”ื–ื”ื”โ€ฌ โ€ซื™ืฆื™ื‘โ€ฌ โ€ซืžืชื—โ€ฌ โ€ซื‘ื™ืฆื™ืื”โ€ฌ โ€ซื•ืžืกืคืงโ€ฌ โ€ซืื™ืžืคื“ื ืก ื”ื›ื ื™ืกื” ื”ื’ื‘ื•ื” 0 ~ 1โ€ช( iโ€ฌโ€ฌ โ€ซื”ื›ื ื™ืกื”.โ€ฌ โ€ซ9-5โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ 'โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืžโ€ฌ โ€ซืžื’ื‘ืจ ื”ื•ืคืš ืกื™ืžืŸโ€ฌ .II i2 v in R1 i1 R2 v out :โ€ซืกื›ืžืช ืชืžื•ืจื”โ€ฌ + _ R1 v in= e 1 i1 e2 i 2 R2 v out = e 3 + A(0-e ) _ 2 i out :โ€ซื”ืžืฉื•ื•ืื•ืช ื”ื‘ืกื™ืกื™ื•ืชโ€ฌ i1 = i2 e = v โˆ’ R i 2 in 11 vout = e2 โˆ’ R2 i2 vout = โˆ’ Ae2 ( = e2 โˆ’ R2 i1 ) :โ€ซ ืžืžืฉื•ื•ืื” 2 ื‘ืžืฉื•ื•ืื” 3 ื ื•ืชื ืชโ€ฌi1 โ€ซื”ืฆื‘ืชโ€ฌ v out = e2 โˆ’ R2 vin โˆ’ e2 R2 R e2 โˆ’ 2 vin = 1 + R1 R1 R1 โ€ซ ืžืžืฉื•ื•ืื” 4 ื ื•ืชื ืช ืขืชื”โ€ฌe2 โ€ซื”ืฆื‘ืชโ€ฌ v out = โˆ’ R 1 R2 1 + vout โˆ’ 2 vin A R1 R1 :โ€ซื•ืœื›ืŸโ€ฌ v out 1 R = 1 + 1 + 2 R1 A โˆ’1 R2 โˆ’ R vin 1 6-9 โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซโˆ’ = โ€ชv outโ€ฌโ€ฌ โ€ซ2โ€ชRโ€ฌโ€ฌ โ€ซโ€ชvinโ€ฌโ€ฌ โ€ซ1โ€ชRโ€ฌโ€ฌ โ€ซืขื‘ื•ืจ โˆž โ†’ โ€ช Aโ€ฌืžืชืงื‘ืœ:โ€ฌ โ€ซ.โ€ฌ โ€ซ2โ€ชRโ€ฌโ€ฌ โ€ซื–ื”ื• ืžื’ื‘ืจ ืžืชื— ื‘ืขืœ ื”ื’ื‘ืจ ื”ื ืงื‘ืข )ื‘ืงืจื•ื‘ ื˜ื•ื‘( ืขืœ ื™ื“ื™ ื™ื—ืก ื”ื ื’ื“ื™ืโ€ฌ โ€ซ1โ€ชRโ€ฌโ€ฌ โ€ซื”ื’ื‘ืจ ื–ื” ื ืชื•ืŸ ืœื‘ื—ื™ืจืชื ื•, ื•ื ืฉืืจ ืงื‘ื•ืข ื’ื ื›ืืฉืจ โ€ช Aโ€ฌืžืฉืชื ื” ื‘ืชื—ื•ื ืจื—ื‘.โ€ฌ โ€ซื ืฆื™ื™ืŸ ื›ื™ ื–ืจื ื”ื™ืฆื™ืื” ) โ€ช ( ioutโ€ฌืชืœื•ื™ ื‘ืžืขื’ืœ ื”ื™ืฆื™ืื”, ื•ื”ืฉืคืขืชื• ืขืœ ืžืชื— ื”ื™ืฆื™ืื” ืงื˜ื ื”โ€ฌ โ€ซ)ื–ื ื™ื—ื” ื‘ืžื•ื“ืœ ืฉืœื ื•(.โ€ฌ โ€ซื”ืขืจื” ืœื’ื‘ื™ ื”ืžืฉื•ื‘ ื”ืฉืœื™ืœื™ : ื‘ืžืขื’ืœื™ื ืฉื”ืฆื’ื ื• ื”ืงืคื“ื ื• ืœื—ื‘ืจ ื‘ื™ืŸ ื”ื™ืฆื™ืื”โ€ฌ โ€ซืœื”ื“ืง ื”ืฉืœื™ืœื™ ืฉืœ ื”ื›ื ื™ืกื”. ืžื” ื™ืงืจื” ืื ื ื—ื‘ืจ ืœื”ื“ืง ื”ื—ื™ื•ื‘ื™?โ€ฌ โ€ซื ื‘ื—ืŸ ืœืžืฉืœ ืืช ื”ืžืขื’ืœ ื”ื‘ื:โ€ฌ โ€ซ2โ€ชRโ€ฌโ€ฌ โ€ซโ€ชv inโ€ฌโ€ฌ โ€ซ1โ€ชRโ€ฌโ€ฌ โ€ซ1โ€ชiโ€ฌโ€ฌ โ€ซ1โ€ชvโ€ฌโ€ฌ โ€ซโ€ชv outโ€ฌโ€ฌ โ€ซืœื›ืื•ืจื”, ื ื™ืชื•ื— ื“ื•ืžื” ืœื–ื” ืฉื‘ืฆืขื ื• ืงื•ื“ื ื™ื™ืชืŸ )ืขื‘ื•ืจ โˆž โ†’ โ€ช:( Aโ€ฌโ€ฌ โ€ซ= โ€ช. v outโ€ฌโ€ฌ โ€ซ2โ€ชRโ€ฌโ€ฌ โ€ซโ€ชvinโ€ฌโ€ฌ โ€ซ1โ€ชRโ€ฌโ€ฌ โ€ซื ื‘ื“ื•ืง ืžื” ื™ืงืจื” ืื ื‘ื™ืฆื™ืื” ืชื”ื™ื” ืขืœื™ื” ืงืœื” ืฉืœ ื”ืžืชื— ืžืขื‘ืจ ืœืขืจืš ื–ื” )ืขืงื‘โ€ฌ โ€ซืขืœื™ื” ื–ื• ืชื’ืจื•ื ืœืขืœื™ื” ืงืœื” ื‘ืžืชื— 1โ€ช , vโ€ฌืฉื™ื’ืจื•ื ืœืขืœื™ื”โ€ฌ โ€ซืจืขืฉ ืืงืจืื™, ืœืžืฉืœ(.โ€ฌ โ€ซื ื•ืกืคืช ื‘ืžืชื— ื”ื™ืฆื™ืื”, ื•ื—ื•ื–ืจ ื—ืœื™ืœื” โ€“ ืขื“ ืฉื”ื™ืฆื™ืื” ืชื™ื›ื ืก ืœืจื•ื•ื™ื”.โ€ฌ โ€ซืžืกืงื ื”: ื”ืžืฉื•ื‘ ื”ื—ื™ื•ื‘ื™ ื’ื•ืจื ืœืื™-ื™ืฆื™ื‘ื•ืช ื•ื›ื ื™ืกื” ืœืจื•ื•ื™ื”, ื•ืœื›ืŸ ืื™ื ื• ืžืชืื™ื ืœืขื‘ื•ื“ื”โ€ฌ โ€ซื‘ืชื—ื•ื ื”ืœื™ื ืืจื™.โ€ฌ โ€ซ9-7โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซื‘ื“ืงื• ืžื”ื™ ื”ืฉืคืขืช ืกื˜ื™ื•ืช ืงื˜ื ื•ืช ื‘ืžืชื— ื”ื™ืฆื™ืื” ืขืœ ื”ืžืขื’ืœ ืขื ืžืฉื•ื‘โ€ฌ โ€ซืชืจื’ื™ืœ:โ€ฌ โ€ซืฉืœื™ืœื™. ืžื”ื™ ืžืกืงื ืชื›ื?โ€ฌ โ€ซ9-8โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซืงื™ืจื•ื‘ ื”ืงืฆืจ ื”ื•ื™ืจื˜ื•ืืœื™โ€ฌ โ€ซ3.9.โ€ฌ โ€ซืจืื™ื ื• ื›ื™ ืขื‘ื•ืจ โˆž โ†’ โ€ช Aโ€ฌืžืชืงื‘ืœื™ื ื‘ื™ื˜ื•ื™ื™ื ืžืคื•ืฉื˜ื™ื, ื”ืžืชืืจื™ื ื‘ืงืจื•ื‘ ื˜ื•ื‘ ืืชโ€ฌ โ€ซื”ืื ื ื™ืชืŸ ืœืงื‘ืœ ื‘ื™ื˜ื•ื™ื™ื ืืœื” ื™ืฉื™ืจื•ืช, ืžื‘ืœื™ ืœื‘ืฆืข ืืช ื”ื ื™ืชื•ื—โ€ฌ โ€ซืื•ืคื™ืŸ ื”ืžืขื’ืœ.โ€ฌ โ€ซื”ืžืœื?โ€ฌ โ€ซื ื‘ื—ืŸ ืืช ื”ืžื’ื‘ืจ:โ€ฌ โ€ซ2โ€ชvโ€ฌโ€ฌ โ€ซ1โ€ชvโ€ฌโ€ฌ โ€ซโ€ชAโ€ฌโ€ฌ โ€ซโ€ชvoutโ€ฌโ€ฌ โ€ซืื ื• ืžืขื•ื ื™ื ื™ื ื‘ืชื—ื•ื ื”ืขื‘ื•ื“ื” ื”ืœื™ื ืืจื™. ื‘ืจื•ืจ ืฉื›ื“ื™ ืœืžื ื•ืข ื›ื ื™ืกื” ืœืจื•ื•ื™ื” ื‘ื™ืฆื™ืื”โ€ฌ โ€ซื”ืคืจืฉ ื”ืžืชื—ื™ื ) 2 โ€ช ( v1 โˆ’ vโ€ฌื—ื™ื™ื‘ ืœื”ื™ื•ืช ืงื˜ืŸ.โ€ฌ โ€ซโ‰ค 2 โ€ช. v1 โˆ’ vโ€ฌโ€ฌ โ€ซ51โ€ฌ โ€ซโ€ช= 0.15mV โ‡ A = 10 5 , ( vout ) max = 15Vโ€ฌโ€ฌ โ€ซโ€ชAโ€ฌโ€ฌ โ€ซืœื“ื•ื’ืžื:โ€ฌ โ€ซืขื‘ื•ืจ โˆž โ†’ โ€ช , Aโ€ฌื—ื™ื™ื‘ ืœื›ืŸ ืœื”ืชืงื™ื™ืโ€ฌ โ€ซ2โ€ชv1 = vโ€ฌโ€ฌ โ€ซื–ื”ื• ืงืจื•ื‘ ื”ืงืฆืจ ื”ื•ื™ืจื˜ื•ืืœื™. ืฉื•ื•ื™ื•ืŸ ื–ื” ืžื—ืœื™ืฃ ืืช ื”ื‘ื™ื˜ื•ื™ ) 2 โ€ช) v out = A( v1 โˆ’ vโ€ฌืฉื”ื•ืโ€ฌ โ€ซื—ืกืจ ืžืฉืžืขื•ืช ืขื‘ื•ืจ โˆž โ†’ โ€ช.( Aโ€ฌโ€ฌ โ€ซื“ื•ื’ืžื: ืขื•ืงื‘ ื”ืžืชื—:โ€ฌ โ€ซ2โ€ชvโ€ฌโ€ฌ โ€ซโ€ชv inโ€ฌโ€ฌ โ€ซโ€ชv outโ€ฌโ€ฌ โ€ซื‘ืžืขื’ืœ ื–ื”, ืงืจื•ื‘ ื”ืงืฆืจ ื”ื•ื™ืจื˜ื•ืืœื™ ื ื•ืชืŸ ืžื™ื™ื“:โ€ฌ โ€ซโ€ชvout = v 2 = vinโ€ฌโ€ฌ โ€ซ9-9โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซื“ื•ื’ืžื: ืžื’ื‘ืจ ื”ื•ืคืš ืกื™ืžืŸ:โ€ฌ โ€ซ2โ€ชRโ€ฌโ€ฌ โ€ซโ€ชv inโ€ฌโ€ฌ โ€ซ1โ€ชRโ€ฌโ€ฌ โ€ซ2โ€ชvโ€ฌโ€ฌ โ€ซโ€ชv outโ€ฌโ€ฌ โ€ซ0 = 2โ€ช. vโ€ฌโ€ฌ โ€ซืงืจื•ื‘ ื”ืงืฆืจ ื”ื•ื™ืจื˜ื•ืืœื™ ื‘ืžืขื’ืœ ื–ื” ื ื•ืชืŸ:โ€ฌ โ€ซื›ื–ื›ื•ืจ 2โ€ช , i1 = iโ€ฌื›ืš ืฉืžืชืงื‘ืœ ื”ื™ื—ืก:โ€ฌ โ€ซ2โ€ชv out = โˆ’i1 Rโ€ฌโ€ฌ โ€ซ1โ€ชvin = i1 Rโ€ฌโ€ฌ โ€ซโ‡’โ€ฌ โ€ซโ€ชvoutโ€ฌโ€ฌ โ€ซโ€ชRโ€ฌโ€ฌ โ€ซ2 โˆ’=โ€ฌ โ€ซโ€ชvinโ€ฌโ€ฌ โ€ซ1โ€ชRโ€ฌโ€ฌ โ€ซ)ื‘ืžืงืจื” ื–ื” ื”ืฆื•ืžืช 2 ื ืงืจืืช ื’ื ืื“ืžื” ื•ื™ืจื˜ื•ืืœื™ืช(.โ€ฌ โ€ซื ืฆื™ื™ืŸ ื›ื™ ื”ืชื ื’ื“ื•ืช ื”ื›ื ื™ืกื” ืฉืœ ืžื’ื‘ืจ ื–ื” ื”ื™ื ื” ื‘ืงืจื•ื‘ 1โ€ช) Rโ€ฌืžื“ื•ืข?(โ€ฌ โ€ซื”ืขืจื” ื—ืฉื•ื‘ื”: ืงืจื•ื‘ ื”ืงืฆืจ ื”ื•ื™ืจื˜ื•ืืœื™ ืื™ื ื ื• ืฉืงื•ืœ ืœืงืฆืจ "ืืžื™ืชื™" ื‘ื™ืŸ ื”ื“ืงื™โ€ฌ โ€ซื”ื›ื ื™ืกื”. ื–ืืช ื›ื™ื•ื•ืŸ ืฉืื™ื ื ื• ืžืจืฉื™ื ืžืขื‘ืจ ื–ืจื ื‘ื™ื ื™ื”ื )ื“ืจืš ื”ืžื’ื‘ืจ(.โ€ฌ โ€ซืžืขื’ืœื™ื ื ื•ืกืคื™ื: ืœื”ืœืŸ ืžืกืคืจ ืžืขื’ืœื™ื ื ื•ืกืคื™ื, ื•ื”ืงืฉืจื™ื ื”ืžืชืงื‘ืœื™ื ืขื‘ื•ืจืโ€ฌ โ€ซื‘ืขื–ืจืช ืงืจื•ื‘ ื”ืงืฆืจ ื”ื•ื™ืจื˜ื•ืืœื™:โ€ฌ โ€ซ2โ€ชRโ€ฌโ€ฌ โ€ซโ€ชv outโ€ฌโ€ฌ โ€ซ1โ€ชRโ€ฌโ€ฌ โ€ซืžื’ื‘ืจ ืฉื•ืžืจ-ืกื™ืžืŸโ€ฌ โ€ซโ€ชv inโ€ฌโ€ฌ โ€ซโ€ชโ€ฌโ€ฌ โ€ซโ€ชRโ€ฌโ€ฌ โ€ซโ€ชv out = 1 + 2 vinโ€ฌโ€ฌ โ€ซโ€ชโ€ฌโ€ฌ โ€ซโ€ชR1 โ€ฌโ€ฌ โ€ซโ€ชโ€ฌโ€ฌ โ€ซโ€ชโ€ฌโ€ฌ โ€ซ9-01โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซ9-11โ€ฌ โ€ซืคืจืง 9: ื”ืžื’ื‘ืจ ื”ืื•ืคืจื˜ื™ื‘ื™โ€ฌ โ€ซื”ืจืฆืื•ืช ื‘ื—ืฉืžืœ ืž'โ€ฌ โ€ซืžืกื›ื ืžืชื—:โ€ฌ โ€ซ1โ€ชvโ€ฌโ€ฌ โ€ซ2โ€ชvโ€ฌโ€ฌ โ€ซ1โ€ชRโ€ฌโ€ฌ โ€ซ2โ€ชRโ€ฌโ€ฌ โ€ซ0โ€ชRโ€ฌโ€ฌ โ€ซโ€ชvoutโ€ฌโ€ฌ โ€ซโˆ’ = โ€ชVoutโ€ฌโ€ฌ โ€ซ0โ€ชRโ€ฌโ€ฌ โ€ซโ€ชRโ€ฌโ€ฌ โ€ซ2โ€ชV1 โˆ’ 0 Vโ€ฌโ€ฌ โ€ซ1โ€ชRโ€ฌโ€ฌ โ€ซ2โ€ชRโ€ฌโ€ฌ โ€ซืขื‘ื•ืจ 0โ€ช , R1 = R2 = Rโ€ฌืœืžืฉืœ, ื ืงื‘ืœโ€ฌ โ€ซ) 2 โ€ชv out = โˆ’( v1 + vโ€ฌโ€ฌ โ€ซืžืงื•ืจ ื–ืจื :โ€ฌ โ€ซโ€ชRโ€ฌโ€ฌ โ€ซ2โ€ชR vโ€ฌโ€ฌ โ€ซโ€ชv outโ€ฌโ€ฌ โ€ซ1โ€ชR vโ€ฌโ€ฌ โ€ซ+โ€ฌ โ€ซ_โ€ฌ โ€ซโ€ชvsโ€ฌโ€ฌ โ€ซโ€ชRโ€ฌโ€ฌ โ€ซโ€ชRLโ€ฌโ€ฌ โ€ซ= โ€ชiLโ€ฌโ€ฌ โ€ซโ€ชVsโ€ฌโ€ฌ โ€ซโ€ชRโ€ฌโ€ฌ โ€ซื–ืจื ื”ืขื•ืžืก โ€ช i Lโ€ฌืื™ื ื• ืชืœื•ื™ ื‘- โ€ช! R Lโ€ฌโ€ฌ โ€ซ9-21โ€ฌ ...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online