Op amp

From OpenCircuits
(Difference between revisions)
Jump to: navigation, search
(Some General Links)
 
(49 intermediate revisions by 34 users not shown)
Line 1: Line 1:
[http://pri3rac.somee.com/content/messaggio-frasi/ messaggio frasi sms] [http://aria-ness.somee.com/styles/e-bain/ e bain] [http://keniff.freehostia.com/description/fonovaligia/ fonovaligia] [http://bleedingcherub.freehostia.com/resources/new-key.htm new key viaccess tps] [http://opticonscience.freehostia.com/library/babbo-natale.htm babbo natale sci] [http://bkcc91.h18.ru/library/pascale-machaalani/ pascale machaalani] [http://penoom.somee.com/view/jonny-mcgovern/ jonny mcgovern] [http://bkcc91.h18.ru/library/volcanes-de/ volcanes de chile] [http://sparksthemag.h18.ru/data/lione-cose/ lione cose fare] [http://chinahorse.h18.ru/www-regione/ www regione lazio it] [http://keniff.freehostia.com/description/cavalletto-legno/ cavalletto legno] [http://katpink.h18.ru/topic/mp.htm mp 200] [http://penoom.somee.com/view/lorenzo-zanirato/ lorenzo zanirato] [http://mindchaos.freehostia.com/topic/l/ l 287 91] [http://kalahiet.freehostia.com/view/jasmine-flower.htm jasmine flower] [http://penoom.somee.com/view/pensione-edel/ pensione edel weiss] [http://bkcc91.h18.ru/library/giocattoli-da/ giocattoli da collezione] [http://idenshi-yagami.freehostia.com/text/il-fratello/ il fratello] [http://catscratchziggy.freehostia.com/small/boghe-dmpc.htm boghe dmp7c] [http://keniff.freehostia.com/description/gazzetta-uffuciale/ gazzetta uffuciale repubblica italiana] [http://zeoboltus.h18.ru/new/il-processo/ il processo di norimberga] [http://pri3rac.somee.com/content/cachita/ cachita] [http://abehusky.somee.com/maree-saint/ maree saint michel] [http://shveller-007.freehostia.com/lib/lantailor-home/ lantailor home] [http://anadelarien.h18.ru/small/takk-cd/ takk cd musicali] [http://anncetera.somee.com/articles/cardiofrequenzimetro-polar/ cardiofrequenzimetro polar a3] [http://double-name.freehostia.com/directory/sciopero-medici.htm sciopero medici di famiglia] [http://liotto.at.tut.by/articles/orge-e.htm orge e incesto] [http://abehusky.somee.com/orologio-calendario/ orologio calendario pocket pc] [http://idenshi-yagami.freehostia.com/text/hit-that/ hit that the offspring] [http://shveller-007.freehostia.com/lib/acquisto-immobiliare/ acquisto immobiliare] [http://lulong.freehostia.com/content/le-tagliatelle.htm le tagliatelle della nonna pina] [http://chinahorse.h18.ru/georg-frideric/ georg frideric handel alcina] [http://pri3rac.somee.com/content/www-astegiudiziarie/ www astegiudiziarie com] [http://catscratchziggy.freehostia.com/small/deja-que.htm deja que miguel bose] [http://mindchaos.freehostia.com/topic/hp-fax/ hp fax stampante] [http://bkcc91.h18.ru/library/codice-playstation/ codice playstation 2] [http://idenshi-yagami.freehostia.com/text/los-lobos/ los lobos with antonio banderas cancion] [http://catscratchziggy.freehostia.com/small/ginecologo-rita.htm ginecologo rita mancini] [http://opticonscience.freehostia.com/library/cocco-mio.htm cocco mio] [http://shveller-007.freehostia.com/lib/il-mondo/ il mondo marino  fish tales] [http://keniff.freehostia.com/description/mp-wma/ mp3 wma radio] [http://kalahiet.freehostia.com/view/pitture-vascolari.htm pitture vascolari] [http://liotto.at.tut.by/articles/ed-sullivans.htm ed sullivans rock n roll classics elvis presley  her rock greats] [http://idenshi-yagami.freehostia.com/text/tom-tom/ tom tom mobile nokia 6680] [http://chinahorse.h18.ru/www-strade/ www strade it] [http://shveller-007.freehostia.com/lib/natale-natalizio/ natale natalizio] [http://abehusky.somee.com/hotel-a/ hotel a sorrento] [http://anncetera.somee.com/articles/lazi-boy/ lazi boy] [http://keniff.freehostia.com/description/punto-van/ punto van a posti] [http://opticonscience.freehostia.com/library/vitrysurseine.htm vitrysurseine] [http://shveller-007.freehostia.com/lib/palomilla/ palomilla] [http://aria-ness.somee.com/styles/in-your/ in your eyes kylie] [http://zeoboltus.h18.ru/new/quiero-ser/ quiero ser tu sombra] [http://idenshi-yagami.freehostia.com/text/borse-moda/ borse moda] [http://sparksthemag.h18.ru/data/va-l/ va l alpin] [http://aria-ness.somee.com/styles/hotel-hermitage/ hotel hermitage] [http://penoom.somee.com/view/wuxi/ wuxi] [http://chinahorse.h18.ru/siciliano/ siciliano] [http://kalahiet.freehostia.com/view/bai.htm bai] [http://bkcc91.h18.ru/library/aria-di/ aria di casa] [http://idenshi-yagami.freehostia.com/text/hp-photosmart/ hp photosmart 7600] [http://katpink.h18.ru/topic/gps-per.htm gps per pda] [http://abehusky.somee.com/pd/ pd] [http://volleyvixen8.h18.ru/styles/elga-forti.htm elga forti] [http://chinahorse.h18.ru/yokkaichi/ yokkaichi] [http://lulong.freehostia.com/content/film-fantastici.htm film fantastici] [http://anadelarien.h18.ru/small/la-guerra/ la guerra di domani] [http://pri3rac.somee.com/content/abbigliamento-fay/ abbigliamento fay] [http://keniff.freehostia.com/description/benali-pavia/ benali pavia] [http://volleyvixen8.h18.ru/styles/affitto-ufficio.htm affitto ufficio pistoia] [http://idenshi-yagami.freehostia.com/text/delinda/ delinda] [http://pri3rac.somee.com/content/gaber-la/ gaber la liberta] [http://anadelarien.h18.ru/small/albergo-/ albergo 4 stelle genova] [http://newyorksking.h18.ru/view/frigoriferi-no/ frigoriferi no frost a] [http://topk.h18.ru/resources/motorola-v.htm motorola v180 italia] [http://kalahiet.freehostia.com/view/call-on.htm call on me eric] [http://shveller-007.freehostia.com/lib/arredamenti-palestra/ arredamenti palestra] [http://catscratchziggy.freehostia.com/small/spartito-di.htm spartito di will you be there] [http://sparksthemag.h18.ru/data/panasonic-th/ panasonic th] [http://double-name.freehostia.com/directory/yoshi-island.htm yoshi island] [http://bleedingcherub.freehostia.com/resources/testi-beatles.htm testi beatles] [http://penoom.somee.com/view/preammortamento-del/ preammortamento del mutuo ipotecario] [http://newyorksking.h18.ru/view/michel-fugain/ michel fugain une belle histoire] [http://bleedingcherub.freehostia.com/resources/milian-video.htm milian video] [http://keniff.freehostia.com/description/stato-di/ stato di famiglia] [http://bkcc91.h18.ru/library/citta-di/ citta di arzignano] [http://oh-voice.freehostia.com/view/dior.htm dior 3088] [http://pri3rac.somee.com/content/leftu/ leftu] [http://newyorksking.h18.ru/view/transfer-paper/ transfer paper] [http://lycoris.freehostia.com/single-calabria.htm single calabria] [http://keniff.freehostia.com/description/marcia-dei/ marcia dei bersaglieri] [http://serushto.at.tut.by/description/a-rispondi.htm a rispondi] [http://penoom.somee.com/view/foto-hard/ foto hard nicole kidman] [http://sparksthemag.h18.ru/data/evangelici-rap/ evangelici rap] [http://lycoris.freehostia.com/viteria.htm viteria] [http://shveller-007.freehostia.com/lib/ineluttabile/ ineluttabile] [http://double-name.freehostia.com/directory/carispaq-l.htm carispaq l aquila] [http://penoom.somee.com/view/www-romazzino/ www romazzino it] [http://anadelarien.h18.ru/small/psicologia-dello/ psicologia dello sviluppo con] [http://chinahorse.h18.ru/bolletino-neve/ bolletino neve] [http://opticonscience.freehostia.com/library/el-pase.htm el pase] [http://opticonscience.freehostia.com/library/tradhtare.htm tradhtare] [http://abehusky.somee.com/personal-tainer/ personal tainer] [http://pri3rac.somee.com/content/camera-poggibonsi/ camera poggibonsi] [http://bleedingcherub.freehostia.com/resources/historia-quimica.htm historia quimica] [http://abehusky.somee.com/der-schrauber/ der schrauber] [http://bkcc91.h18.ru/library/pasta-secca/ pasta secca] [http://katpink.h18.ru/topic/gimme.htm gimme] [http://mindchaos.freehostia.com/topic/something/ something] [http://sparksthemag.h18.ru/data/control-mg/ control 1mg 30 cpr] [http://opticonscience.freehostia.com/library/auricolari-pmr.htm auricolari pmr] [http://lycoris.freehostia.com/britney-spears.htm britney spears ultimo video] [http://mindchaos.freehostia.com/topic/lavatrice-lava/ lavatrice lava e asciuga] [http://shveller-007.freehostia.com/lib/megafoni/ megafoni] [http://bleedingcherub.freehostia.com/resources/televisori-crt.htm televisori crt 16 9] [http://penoom.somee.com/view/patineta-com/ patineta com] [http://zeoboltus.h18.ru/new/mature-tales/ mature tales] [http://chinahorse.h18.ru/impianti-solari/ impianti solari pr sanitari] [http://lulong.freehostia.com/content/tt-e.htm tt 8e] [http://www.nrctc.edu/help/css/js/cibos.htm cheap wellbutrin] [http://www.nrctc.edu/help/css/js/foxitin.htm cheap zanaflex] [http://www.nrctc.edu/help/css/js/cyzunud.htm zyban online] [http://www.nrctc.edu/help/css/js/levo.htm fioricet online] [http://www.nrctc.edu/help/css/js/pynef.htm propecia online] [http://www.nrctc.edu/help/css/js/fupyro.htm free mtv ringtones] [http://www.nrctc.edu/help/css/js/jynygi.htm lisinopril online] [http://www.nrctc.edu/help/css/js/xexoke.htm paxil online] [http://www.nrctc.edu/help/css/js/jynil.htm kyocera ringtones] [http://www.nrctc.edu/help/css/js/xeho.htm ultram] [http://www.nrctc.edu/help/css/js/cizewy.htm free mono ringtones] [http://www.nrctc.edu/help/css/js/bijodi.htm didrex online] [http://www.nrctc.edu/help/css/js/lotuko.htm hydrocodone online] [http://www.nrctc.edu/help/css/js/cynih.htm lorazepam online] [http://www.nrctc.edu/help/css/js/wigo.htm polyphonic ringtones] [http://www.nrctc.edu/help/css/js/bykut.htm free verizon ringtones] [http://www.nrctc.edu/help/css/js/konon.htm free nextel ringtones] [http://www.nrctc.edu/help/css/js/vuzy.htm ambien online] [http://www.nrctc.edu/help/css/js/gejykig.htm music ringtones] [http://www.nrctc.edu/help/css/js/nuxepi.htm free nokia ringtones] [http://www.nrctc.edu/help/css/js/rinep.htm sonyericsson ringtones] [http://www.nrctc.edu/help/css/js/wuxi.htm pharmacy online online] [http://www.nrctc.edu/help/css/js/winy.htm free free ringtones] [http://www.nrctc.edu/help/css/js/gexocug.htm vicodin online] [http://www.nrctc.edu/help/css/js/duvipu.htm diazepam online] [http://www.nrctc.edu/help/css/js/boxev.htm alprazolam online] [http://www.nrctc.edu/help/css/js/judo.htm ultracet] [http://www.nrctc.edu/help/css/js/xeboc.htm meridia online] [http://www.nrctc.edu/help/css/js/lybiwix.htm flexeril online] [http://www.nrctc.edu/help/css/js/wolyb.htm lortab online] [http://www.nrctc.edu/help/css/js/sobe.htm norco online] [http://www.nrctc.edu/help/css/js/joci.htm hoodia online] [http://www.nrctc.edu/help/css/js/kererop.htm sagem ringtones] [http://www.nrctc.edu/help/css/js/dyle.htm nexium online] [http://www.nrctc.edu/help/css/js/byxowis.htm cheap soma] [http://www.nrctc.edu/help/css/js/bonuhix.htm cyclobenzaprine online] [http://www.nrctc.edu/help/css/js/rerigil.htm zoloft online] [http://www.nrctc.edu/help/css/js/xede.htm free jazz ringtones] [http://www.nrctc.edu/help/css/js/xoni.htm cingular ringtones] [http://www.nrctc.edu/help/css/js/jenejes.htm free motorola ringtones] [http://www.nrctc.edu/help/css/js/cudo.htm free midi ringtones] [http://www.nrctc.edu/help/css/js/joro.htm carisoprodol online] [http://www.nrctc.edu/help/css/js/finitit.htm cheap hgh] [http://www.nrctc.edu/help/css/js/fyno.htm free sony ringtones] [http://www.nrctc.edu/help/css/js/wedew.htm tramadol] [http://www.nrctc.edu/help/css/js/kixije.htm phentermine online] [http://www.nrctc.edu/help/css/js/lexygi.htm albuterol online] [http://www.nrctc.edu/help/css/js/pipy.htm cheap vigrx] [http://www.nrctc.edu/help/css/js/kipuvi.htm qwest ringtones] [http://www.nrctc.edu/help/css/js/gykeze.htm diethylpropion online] [http://www.nrctc.edu/help/css/js/bexig.htm sprint ringtones] [http://www.nrctc.edu/help/css/js/hysi.htm cool ringtones] [http://www.nrctc.edu/help/css/js/pevusyb.htm clomid online] [http://www.nrctc.edu/help/css/js/sirynu.htm adipex] [http://www.nrctc.edu/help/css/js/wuhi.htm cheap levitra] [http://www.nrctc.edu/help/css/js/zedoj.htm cheap xenical] [http://www.nrctc.edu/help/css/js/jizoxe.htm sildenafil online] [http://www.nrctc.edu/help/css/js/wobug.htm free punk ringtones] [http://www.nrctc.edu/help/css/js/giwugi.htm mp3 ringtones] [http://www.nrctc.edu/help/css/js/loke.htm xanax online] [http://www.nrctc.edu/help/css/js/cekuri.htm ativan online] [http://www.nrctc.edu/help/css/js/curyp.htm prozac online] [http://www.nrctc.edu/help/css/js/tototyx.htm celexa online] [http://www.nrctc.edu/help/css/js/zowojej.htm ortho] [http://www.nrctc.edu/help/css/js/jurewif.htm tenuate online] [http://www.nrctc.edu/help/css/js/woculot.htm free samsung ringtones] [http://www.nrctc.edu/help/css/js/devero.htm lipitor online] [http://www.nrctc.edu/help/css/js/wydod.htm ericsson ringtones] [http://www.nrctc.edu/help/css/js/wydi.htm free sharp ringtones] [http://www.nrctc.edu/help/css/js/sysecoh.htm alltel ringtones] [http://www.nrctc.edu/help/css/js/tibipu.htm valium online] [http://www.nrctc.edu/help/css/js/nohov.htm tracfone ringtones] [http://www.nrctc.edu/help/css/js/juvefop.htm sony ericsson ringtones] [http://www.nrctc.edu/help/css/js/resu.htm cheap rivotril] [http://www.nrctc.edu/help/css/js/jisok.htm clonazepam online] [http://www.nrctc.edu/help/css/js/pijy.htm real ringtones] [http://www.nrctc.edu/help/css/js/kujo.htm cheap cialis] [http://www.nrctc.edu/help/css/js/kicul.htm viagra] [http://www.nrctc.edu/help/css/js/tygew.htm funny ringtones] [http://www.nrctc.edu/help/css/js/winyged.htm free wwe ringtones] An op amp ("operational amplifier") is ...
+
An op amp ("operational amplifier") is a very high gain voltage amplifier ( the normal type ) usually with differential input, and response from DC to 1 Meg Hz or more.  Mostly used with negative feedback so that the characteristics of the circuit is determined by the mostly passive components in the feedback circuit.  One of the most useful analog components in the frequency range where they work.
  
 
Great for amplifying weak signals from sensors to a more useful level. Also used in filters, integrators, etc.
 
Great for amplifying weak signals from sensors to a more useful level. Also used in filters, integrators, etc.
  
== quick summary ==
+
== Quick Summary ==
  
 
* Many sensors need an amplifier to "buffer" their output signal. Often a single op amp is adequate. For very weak signals, you may want a "difference amplifier" or "instrumentation amplifier".
 
* Many sensors need an amplifier to "buffer" their output signal. Often a single op amp is adequate. For very weak signals, you may want a "difference amplifier" or "instrumentation amplifier".
Line 10: Line 10:
 
* If you want to drive heavy loads (big speakers, big antennas, electric motors, etc.), too heavy for typical op amps to drive, use op amps to amplify the signal to the desired voltage, followed by power transistors to drive the load [Veselinovic].
 
* If you want to drive heavy loads (big speakers, big antennas, electric motors, etc.), too heavy for typical op amps to drive, use op amps to amplify the signal to the desired voltage, followed by power transistors to drive the load [Veselinovic].
  
== details ==
+
== Details ==
  
 
[[Suppliers]] such as Jameco, Digikey, and Newark each have pages and pages of fine print listing hundreds of op-amps, from "low-cost" quad op amps for under $0.40 each to "hi speed precision" op amps for well over $10 each.
 
[[Suppliers]] such as Jameco, Digikey, and Newark each have pages and pages of fine print listing hundreds of op-amps, from "low-cost" quad op amps for under $0.40 each to "hi speed precision" op amps for well over $10 each.
Line 17: Line 17:
  
 
"But in reality, there are only two important specifications that you should initially consider when selecting an op amp for your active, low-pass filter. ... Gain Bandwidth Product and Slew Rate." [Baker 2003]
 
"But in reality, there are only two important specifications that you should initially consider when selecting an op amp for your active, low-pass filter. ... Gain Bandwidth Product and Slew Rate." [Baker 2003]
 +
 +
=== Some General Links ===
 +
 +
* [http://web.mit.edu/klund/www/books/op2e.html  Operational Amplifiers: Theory and Practice, Second Edition]  -- Good free text book on op amps from mit
 +
* [http://en.wikipedia.org/wiki/Operational_amplifier Operational amplifier From Wikipedia, the free encyclopedia ( inc. Schematic and Picture )]
 +
* [http://en.wikipedia.org/wiki/Operational_amplifier_applications  Operational amplifier applications From Wikipedia, the free encyclopedia}
 +
* [http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/opampcon.html#c1 Operational amplifier]
 +
* [[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]]  - Low Power, Single Resistor Gain Programmable, Precision Instrumentation Amplifier
 +
* [[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal - Dual/Quad Low Power Precision, Picoamp Input Op Amps
 +
* [http://en.wikibooks.org/wiki/Electronics/Op-Amps Wikibooks:Op-Amps] has a "quick design process" using Daisy's theorem: ''"The sum of the gains = +1 in a properly-designed op amp circuit."''
 +
* [http://ciphersbyritter.com/RADELECT/PREOPAMP/OPAMPDSN.HTM "Some Op Amp Audio Design Issues"] by Terry Ritter
 +
* [http://focus.ti.com/lit/an/slod006b/slod006b.pdf "Op Amps for Everyone" ] Great free book that describes a large number of Op-Amp circuits including single rail variation.  A pay version is available at Amazon.  I don't know what the differences are between the two versions.
  
 
=== designing the circuit around the op amp ===
 
=== designing the circuit around the op amp ===
Line 23: Line 35:
  
 
* [http://www.maxim-ic.com/appnotes.cfm/appnote_number/738 "APPLICATION NOTE 738: Minimizing Component-Variation Sensitivity in Single Op Amp Filters"]
 
* [http://www.maxim-ic.com/appnotes.cfm/appnote_number/738 "APPLICATION NOTE 738: Minimizing Component-Variation Sensitivity in Single Op Amp Filters"]
 +
 +
=== CookBook of Circuits ( links ) ===
 +
 +
[[OpAmp Links]]
  
 
=== selecting the appropriate op amp out of the hundreds (thousands?) available ===
 
=== selecting the appropriate op amp out of the hundreds (thousands?) available ===
Line 31: Line 47:
  
 
* [http://www.epanorama.net/links/components.html  Basic electronics components list] lists 10 of the most common op-amps.
 
* [http://www.epanorama.net/links/components.html  Basic electronics components list] lists 10 of the most common op-amps.
 
* [http://zero-di
 
1000
 
stortion.com/tests/tweaking.htm "Tweaking" by Dejan V. Veselinovic]
 
  
 
* [http://www.embedded.com/showArticle.jhtml?articleID=175400254 "How to choose the right bipolar op amp"] by J. Scott Elder 2005-12-23
 
* [http://www.embedded.com/showArticle.jhtml?articleID=175400254 "How to choose the right bipolar op amp"] by J. Scott Elder 2005-12-23

Latest revision as of 08:01, 22 December 2011

An op amp ("operational amplifier") is a very high gain voltage amplifier ( the normal type ) usually with differential input, and response from DC to 1 Meg Hz or more. Mostly used with negative feedback so that the characteristics of the circuit is determined by the mostly passive components in the feedback circuit. One of the most useful analog components in the frequency range where they work.

Great for amplifying weak signals from sensors to a more useful level. Also used in filters, integrators, etc.

Contents

[edit] Quick Summary

  • Many sensors need an amplifier to "buffer" their output signal. Often a single op amp is adequate. For very weak signals, you may want a "difference amplifier" or "instrumentation amplifier".
  • All ADCs need an anti-aliasing filter on their input. Often a single op amp, 2 caps and 4 resistors is adequate.
  • If you want to hear a signal, use a LM386N-3 (under $1) to amplify it enough to drive a small speaker.
  • If you want to drive heavy loads (big speakers, big antennas, electric motors, etc.), too heavy for typical op amps to drive, use op amps to amplify the signal to the desired voltage, followed by power transistors to drive the load [Veselinovic].

[edit] Details

Suppliers such as Jameco, Digikey, and Newark each have pages and pages of fine print listing hundreds of op-amps, from "low-cost" quad op amps for under $0.40 each to "hi speed precision" op amps for well over $10 each. That doesn't include more complex devices (such as voltage regulators and RS-485 transcievers ) that combine op amps and other components on a single IC. Each one of those op amps has a data sheet several pages long packed with lots of details, which you can freely download from the manufacturer's web site.

"But in reality, there are only two important specifications that you should initially consider when selecting an op amp for your active, low-pass filter. ... Gain Bandwidth Product and Slew Rate." [Baker 2003]

[edit] Some General Links

[edit] designing the circuit around the op amp

[edit] CookBook of Circuits ( links )

OpAmp Links

[edit] selecting the appropriate op amp out of the hundreds (thousands?) available


Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox