Difference between revisions of "Op amp"

From OpenCircuits
Jump to navigation Jump to search
(Undo revision 12418 by 193.28.153.27 (Talk))
Line 1: Line 1:
[http://marybethcramer.ifrance.com/fayetteville-state.html fayetteville state university in fayetteville nc] [http://dustisimmon.ifrance.com/description/project-management.html online project management course] [http://leiatynan.w8w.pl/articles/merriam-webster.html merriam webster online dictionary] [http://dustisimmon.ifrance.com/description/penn-restaurant.html penn restaurant six] [http://johnnywinbush.ifrance.com/small/dante-hall.html dante hall picture] [http://brittcrisler.talk4fun.net/sacramento-strip.html sacramento strip club] [http://vandapriestley.w8w.pl/description/proctologist.html find proctologist] [http://daniellemallett.w8w.pl/taking-over-lease.html taking over lease payments] [http://dallashultgren.ifrance.com/tzr-125-parts.html tzr 125 parts] [http://marybellewestla.w8w.pl/lib/1-10-advanced.html 1 10 advanced boy game in pack phat sp] [http://johnnywinbush.ifrance.com/small/architectural.html architectural scale conversions] [http://robinsherron.ifrance.com/data/handmade-gel.html handmade gel candle] [http://brittcrisler.talk4fun.net/roman-numeral.html roman numeral activity] [http://eboniedanek.free-site-host.com/arkansas-lakewood.html arkansas lakewood baseball] [http://kaylenelaflamme.ifrance.com/view/jeff-probst.html jeff probst] [http://rosariatsao.freehostia.com/library/home-redesign.html home lake redesign south tahoe] [http://missylineberry.ifrance.com/styles/regmon-xp.html regmon xp] [http://dararousey.ifrance.com/article/network-hacking.html network hacking softwares] [http://rolandepolitte.free-site-host.com/text/kansas-state-womens.html kansas state womens basketball coach] [http://johnnywinbush.ifrance.com/small/pontoon-boats.html used pontoon boat] [http://burmahentz.ifrance.com/resources/screen-printed-t-shirts.html screen printed t-shirts] [http://marylnaybar.w8w.pl/web/may-hegglin-anomoly.html may hegglin anomoly] [http://rolandepolitte.free-site-host.com/text/ruby-tuesday.html ruby tuesday restaraunt] [http://burmahentz.ifrance.com/resources/paul-frank-vans.html paul frank vans slip on] [http://shusipes.ifrance.com/wiki/powerpoint-free.html free power point slide background] [http://gerdaguerrera.freehostia.com/web/oxyuranus-taipan.html oxyuranus taipan] [http://burmahentz.ifrance.com/resources/american-moped.html american moped scooter] [http://orahennis.ifrance.com/description/michael-harris.html michael harris homes maryland] [http://lisabethcarrara.ifrance.com/lib/brazilian-transsexual.html brazilian transsexual] [http://dustisimmon.ifrance.com/description/cars-alexandria.html alexandria car louisiana used] [http://brittcrisler.talk4fun.net/mia-movies-com.html mia movies com] [http://lucillalinton.free-site-host.com/daily-celeb-videos.html daily celeb videos] [http://marybellewestla.w8w.pl/lib/115-chip-dice.html 11.5 chip dice gram poker] [http://mindyfredrickso.w8w.pl/clown-costume.html clown costume kid] [http://jacquelynndesro.talk4fun.net/payable-on-death.html payable on death] [http://marybethcramer.ifrance.com/mrskincom.html mr.skin.com] [http://paulettelynde.freehostia.com/mixer.html mixer] [http://jaclynfinkbeine.ifrance.com/wiki/pool-builder-of.html pool builder of pa] [http://marilouwillson.ifrance.com/kelly-blue-book.html kelly blue book motorcycle] [http://starrerdman.freehostia.com/lib/english-war-brides.html english war brides] [http://jaclynfinkbeine.ifrance.com/wiki/the-one-and.html one and only palmilla] [http://nikkideck.ifrance.com/martian-halloween.html martian halloween] [http://gerdaguerrera.freehostia.com/web/online-physician.html online physician and prescription consultation] [http://jaclynfinkbeine.ifrance.com/wiki/ap-english-practice.html ap english practice tests] [http://mindyfredrickso.w8w.pl/dragon-ash.html dragon ash] [http://marybethcramer.ifrance.com/tattoo-heart.html tattoo heart] [http://doreenhiller.ifrance.com/lib/atlantas-black.html atlantas black exotic dancers] [http://orahennis.ifrance.com/description/language-arts.html language arts] [http://dustisimmon.ifrance.com/description/king-county-library.html county kcls king library system] [http://erminiabroomfie.talk4fun.net/directory/mars-lander-pics.html mars lander pics] [http://erminiabroomfie.talk4fun.net/directory/abc7chicago.html abc7chicago news.com] [http://rosariatsao.freehostia.com/library/quantum-dlt-sdlt.html quantum dlt sdlt drive sales] [http://jacquelynndesro.talk4fun.net/26-34-34b.html 26 34 34b] [http://kristianspeck.w8w.pl/love-lucy-pussy.html love lucy pussy] [http://marilouwillson.ifrance.com/zero-down-payment.html zero down payment home loan] [http://lucillalinton.free-site-host.com/sanji.html hentai nami sanji x] [http://lisabethcarrara.ifrance.com/lib/tapeout.html tapeout] [http://lindyschwandt.w8w.pl/articles/23-psalms-of-christ.html 23 psalms of christ in the holy bible] [http://daniellemallett.w8w.pl/leonard-water.html leonard water temperature control] [http://erminiabroomfie.talk4fun.net/directory/pleasuring-women.html pleasuring women sexually] [http://vandapriestley.w8w.pl/description/buyer-of-structured.html buyer settlement structured y02.com] [http://orahennis.ifrance.com/description/pacifica.html pacifica] [http://robinsherron.ifrance.com/data/popworld-boyz.html popworld boyz] [http://roselleeisenber.talk4fun.net/sperry-topsiders.html womens sperry topsiders] [http://kristianspeck.w8w.pl/10-5-ba-jeep.html 10 5 ba jeep transmission] [http://marybellewestla.w8w.pl/lib/neuro-linguistic.html neuro linguistic programming tapes free] [http://shusipes.ifrance.com/wiki/the-archetypal.html archetypal hero] [http://leiatynan.w8w.pl/articles/london-bomb-blast.html london bomb blast 1] [http://manmaday.free-site-host.com/styles/texas-law-school.html texas law school rank] [http://dararousey.ifrance.com/article/soccer-clips.html soccer clips] [http://burmahentz.ifrance.com/resources/shay-sights.html shay sights] [http://vandapriestley.w8w.pl/description/california-speedway.html california speedway] [http://lisabethcarrara.ifrance.com/lib/suburu-impreza.html suburu impreza wrx 0-60 time] [http://rosariatsao.freehostia.com/library/katie-pussy.html katie pussy] [http://johnnywinbush.ifrance.com/small/jobs-queensland.html jobs queensland government] [http://heebroughton.ifrance.com/spread-wide.html spread wide open pussies] [http://paulettelynde.freehostia.com/burglar.html cat burglar] [http://lucillalinton.free-site-host.com/monoacetate.html monoacetate] [http://jaclynfinkbeine.ifrance.com/wiki/love-parade-berlin.html love parade berlin germany] [http://vandapriestley.w8w.pl/description/tropical-beaches.html beach layout myspace tropical] [http://eboniedanek.free-site-host.com/hoedown.html hoedown valleyschwag] [http://eboniedanek.free-site-host.com/angel-tompkins.html angel tompkins] [http://jaclynfinkbeine.ifrance.com/wiki/african-safaris.html african safaris] [http://daniellemallett.w8w.pl/usb-adapter.html wireless usb network adapter] [http://marybellewestla.w8w.pl/lib/home-insurance.html home insurance] [http://nikkideck.ifrance.com/free-long-distance.html free long distance] [http://marilouwillson.ifrance.com/nikon-coolpix.html nikon coolpix 4600] [http://nikkideck.ifrance.com/yoko-kurama.html kurama quiz yoko yyh] [http://dararousey.ifrance.com/article/www-record.html book guinness record world] [http://roxanekerfoot.talk4fun.net/hq-sexy.html hq sexy] [http://johnnywinbush.ifrance.com/small/the-dogs-begin-to.html the dogs begin to smell her] [http://marybethcramer.ifrance.com/inc-piping-system.html inc piping system] [http://burmahentz.ifrance.com/resources/tonya-from-real.html tonya from real world chicago] [http://erinoceguera.ifrance.com/topic/scholarships-for.html scholarships for education majors] [http://jaclynfinkbeine.ifrance.com/wiki/pretty-young-models.html pretty young models] [http://roxanekerfoot.talk4fun.net/in-text-citation.html in text citation internet source] [http://marilouwillson.ifrance.com/johari-window-examples.html johari window examples] [http://dallashultgren.ifrance.com/vision-plans.html vision plan] [http://vandapriestley.w8w.pl/description/young-peoples.html young peoples press toronto] [http://marylnaybar.w8w.pl/web/tornado-videos.html tornado video amazing] [http://brittcrisler.talk4fun.net/achieve.html achieve] [http://marylnaybar.w8w.pl/web/pet-medicine.html medicine pet prescription] [http://jacquelynndesro.talk4fun.net/deja-vu-showgirls.html deja vu showgirls] [http://lucillalinton.free-site-host.com/mohonk-mountain.html mohonk mountain house resort] [http://doreenhiller.ifrance.com/lib/puffy-amiyumi-lyrics.html puffy amiyumi lyrics teen titans] [http://kaylenelaflamme.ifrance.com/view/the-knee-bones.html the knee bones connected to the leg bone] [http://marybethcramer.ifrance.com/flesh.html devil in the flesh] [http://jaclynfinkbeine.ifrance.com/wiki/ed-belfour-drunk.html ed belfour drunk] [http://kristianspeck.w8w.pl/agriculture-life.html agriculture anatomy energy in life] [http://roxanekerfoot.talk4fun.net/kuchnie-szczecin.html kuchnie szczecin] [http://marilouwillson.ifrance.com/las-news-stratosphere.html las news stratosphere suicide vegas] [http://starrerdman.freehostia.com/lib/map-mexico-picture.html map mexico picture] [http://kristianspeck.w8w.pl/republican-whips.html republican whips] [http://paulettelynde.freehostia.com/stedman-hawkins.html stedman hawkins] [http://marybethcramer.ifrance.com/summit-county.html county map ohio summit] [http://marilouwillson.ifrance.com/1-15-23-ephesians.html 1 15 23 ephesians] [http://marybellewestla.w8w.pl/lib/california-labor.html california labor law] [http://jaclynfinkbeine.ifrance.com/wiki/justin-lady-boot.html justin lady boot] [http://dararousey.ifrance.com/article/s-corp.html s corp] [http://dararousey.ifrance.com/article/violin-dealers.html violin dealers] [http://missylineberry.ifrance.com/styles/hy6116.html hy6116] [http://dustisimmon.ifrance.com/description/cheap-plane.html cheap florida plane ticket] [http://lindyschwandt.w8w.pl/articles/industrial-management.html industrial management and data systems] [http://starrerdman.freehostia.com/lib/sleep-over.html sleep over] [http://jacquelynndesro.talk4fun.net/viper-fish.html viper fish] [http://heebroughton.ifrance.com/libros-de-veterinaria.html libros de veterinaria] [http://burmahentz.ifrance.com/resources/zone-of-the-enders.html zone of the enders] [http://rolandepolitte.free-site-host.com/text/procol-harum.html procol harum the best] [http://jamicarbaugh.ifrance.com/description/free-land.html free land toni] [http://gerdaguerrera.freehostia.com/web/nursing-careers.html career nursing travel] [http://doreenhiller.ifrance.com/lib/vacu-org.html vacu org] [http://lisabethcarrara.ifrance.com/lib/halloween-pitchers.html halloween pitchers] [http://delaineresto.ifrance.com/pages/media-mit-edu.html media mit edu] [http://roxanekerfoot.talk4fun.net/manolo-blahniks.html manolo blahniks website] [http://dallashultgren.ifrance.com/longhouse.html longhouse picture] [http://lindyschwandt.w8w.pl/articles/when-to-tell-people.html when to tell people you are pregnant] [http://roselleeisenber.talk4fun.net/hypnotherapy.html hypnotherapy] [http://brittcrisler.talk4fun.net/magnesium-citrate.html magnesium citrate laxative] [http://burmahentz.ifrance.com/resources/custom-rubber.html custom rubber specialist] [http://johnnywinbush.ifrance.com/small/irish-immigrants.html irish immigrants] [http://starrerdman.freehostia.com/lib/princess-dala.html princess dala] [http://vandapriestley.w8w.pl/description/child-sex-education.html child sex education] [http://vandapriestley.w8w.pl/description/monster-magnet.html monster magnet] [http://rosariatsao.freehostia.com/library/krakatoa-the-volcanoe.html krakatoa volcano picture] [http://missylineberry.ifrance.com/styles/stemming-search.html stemming search engines] [http://jacquelynndesro.talk4fun.net/fertility-calculator.html calculator fertility] [http://lisabethcarrara.ifrance.com/lib/long-term-weather.html long term weather forecast spain] [http://missylineberry.ifrance.com/styles/pc-miler-street.html pc miler street] [http://erinoceguera.ifrance.com/topic/jabang.html jabang] [http://burmahentz.ifrance.com/resources/muscle-names.html arm muscle name] An op amp ("operational amplifier") is ...
+
An op amp ("operational amplifier") is ...
  
 
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.

Revision as of 15:22, 28 December 2007

An op amp ("operational amplifier") is ...

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

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].

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]

designing the circuit around the op amp

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