|
|
Line 1: |
Line 1: |
− | [http://geslaven.freeweb7.com/directory/prestito-pistoia.html prestito pistoia] [http://sablaloc.freeweb7.com/new/film-porno-sui.html film porno sui canali satellitari] [http://mendyhammers.marte.ro/lib/isps.html isps] [http://zellawillaims.ifrance.com/new/simba.html lion king simba] [http://emogenecuellar.ifrance.com/library/fake-money.html creating fake money] [http://found.dynup.net/cheyenne-silver.html cheyenne silver galleries] [http://zellawillaims.ifrance.com/new/teaching-aids.html aids free teaching] [http://eviebonet.myweb.io/blog/rubber-stamps.html stampin up rubber stamp] [http://elwandasais.marte.ro/toni-collette.html collette naked toni] [http://isobelpenniman.wan.io/war-on-iraq.html war on iraq] [http://jocelynrieder.ifrance.com/nina-sky-mp3.html nina sky turnin me on mp3] [http://zellawillaims.ifrance.com/new/free--games.html free game yahoo] [http://tribes.dynup.net/blog/adopt-a-sheep.html adopt a sheep] [http://odessachristens.marte.ro/dogs-for-sale.html dogs for sale in the uk] [http://audiemuldoon.marte.ro/storm-door.html security storm door] [http://moraforth.ifrance.com/description/tumescent-liposculpture.html tumescent liposculpture] [http://utters.dynup.net/above-ground-solar.html above ground solar pool cover] [http://elwandasais.marte.ro/photo-personal.html photo personal] [http://berryyeager.ecv.vg/q/draper.html draper] [http://twannafulks.ifrance.com/article/cost-saving.html cost saving ideas] [http://propos.dynup.net/comments/mixed-wrestling.html mixed wrestling usa] [http://jocelynrieder.ifrance.com/california-health.html southern california individual health insurance quote] [http://shoshanaalmeida.myweb.io/lib/avast-free-anti.html avast free anti virus software] [http://elwandasais.marte.ro/custom-posters.html custom poster frame] [http://marcieloveland.ifrance.com/styles/melfina.html melfina] [http://lucitabarez.marte.ro/styles/canadian-goose.html canadian goose picture] [http://dorathyboldt.ifrance.com/pre-paid-phone.html cheap pre paid phone card] [http://brbess.freeweb7.com/articles/notthingam.html notthingam] [http://beebarf.datadiri.com/q/acura-tsx.html acura tsx] [http://genovevahaney.marte.ro/naughty-sister.html my sister best friend naughty america] [http://earthahohman.qiye.in/pages/sanctus-real.html sanctus real] [http://lentus.dynup.net/prescriptives.html prescriptives magic line smoother] [http://kaseyguerrette.myweb.io/studebaker-cars.html car convertible sale studebaker] [http://roxiegarfield.marte.ro/content/wildlife-camera.html cam camera live web wildlife] [http://found.dynup.net/boulevard-of.html boulevard of broken dreams green day] [http://brbess.freeweb7.com/articles/prestito-rozzano.html prestito rozzano] [http://utters.dynup.net/tranquilizers.html horse tranquilizers] [http://propos.dynup.net/comments/railway-resevation.html railway resevation] [http://angelicrybicki.myweb.io/topic/nudist-gallery.html nudist photo gallery] [http://earthahohman.qiye.in/pages/gambia.html gambia] [http://angelicrybicki.myweb.io/topic/my-horoscope.html my horoscope] [http://leclemento.forumvila.com/ buy vigrx] [http://odessachristens.marte.ro/litter-chain-conveyors.html litter chain conveyors] [http://yolondacoles.ifrance.com/blog/soul-calibur-3.html 3 calibur character custom soul] [http://propos.dynup.net/comments/flashing-college.html flashing college girls] [http://baentrek.freeweb7.com/description/oh-happy-days.html oh happy days] [http://baentrek.freeweb7.com/description/pepsi-totti.html pepsi totti] [http://dominqueraines.ifrance.com/description/all-i-have.html all i have] [http://pumixon.forumvila.com/ diethylpropion online] [http://stern.dynup.net/text/athleats.html athleats] [http://francinebard.myweb.io/resources/jamie-pressley.html jamie pressley playboy] [http://drewjurado.qiye.in/lib/menlo-park-real.html menlo park real estate] [http://alixsherlock.ifrance.com/custom-application.html custom application development] [http://reaganroyals.wan.io/wiki/johnston-and-murphy.html johnston and murphy] [http://lucreciamccollu.ifrance.com/personal-protection.html personal protection services] [http://utters.dynup.net/pre-paid-credit.html card credit paid pre] [http://kaseyguerrette.myweb.io/performance.html dodge part performance truck] [http://stern.dynup.net/text/arabic-xxx.html arabic sex xxx] [http://odessachristens.marte.ro/iron-on-letters.html iron on letter] [http://debwurth.ifrance.com/pages/gerber.html gerber] [http://dicarrin.forumvila.com/ sildenafil online] [http://shirlharrill.ecv.vg/blog/patio-roof-repair.html patio roof repair] [http://yolondacoles.ifrance.com/blog/font.html font] [http://utters.dynup.net/massage-mitt.html massage mitt] [http://pinichol.freeweb7.com/lib/laica-pressione.html laica pressione] [http://corrinwages.ifrance.com/online-pregnancy.html online pregnancy test] [http://jalajuan.forumvila.com/ cheap levitra] [http://bernardinedeguz.datadiri.com/small/convection-oven.html convection cooking in microwave oven] [http://moraforth.ifrance.com/description/girl-interrupted.html girl interrupted quote] [http://eviebonet.myweb.io/blog/allstate-insurance.html allstate claim home insurance owner] [http://marivelescobedo.myweb.io/videos.html free sex video] [http://ricardamontero.marte.ro/resources/wilma-deering.html wilma deering] [http://lucitabarez.marte.ro/styles/elke-sommers.html elke sommers] [http://yolondacoles.ifrance.com/blog/maine-family-vacations.html maine family vacations] [http://zellawillaims.ifrance.com/new/glorious.html glorious] [http://reaganroyals.wan.io/wiki/oklahoma-county.html oklahoma county] [http://isobelpenniman.wan.io/tennis-uniforms.html tennis uniforms] [http://pamuladonoghue.qiye.in/small/katzkin.html cover katzkin seat] [http://emogenecuellar.ifrance.com/library/copper.html copper] [http://noellamarin.wan.io/pierce-county-assessor.html pierce county assessor] [http://sablaloc.freeweb7.com/new/elmar-srl.html elmar srl] [http://luellafinney.marte.ro/lasik-and-dry-eyes.html lasik and dry eyes] [http://angelicrybicki.myweb.io/topic/car-houston-used.html car houston used] [http://child.dynup.net/view/rei-store.html rei store] [http://nickywaller.datadiri.com/content/refillable-face.html refillable face makeup compact mirror] [http://mender.dynup.net/300-s-westmoreland.html 300 s westmoreland] [http://vanettaeubank.ifrance.com/styles/eckerd.html ruth eckerd] [http://jene7777777.datadiri.com/library/kesenai-tsumi.html kesenai kitade nana tsumi] [http://carlynbookout.marte.ro/small/dinar-trade.html dinar trade] [http://genovevahaney.marte.ro/fun-tests-quizzes.html fun personality test and quiz] [http://audiemuldoon.marte.ro/ncaaorg.html ncaa.org] [http://brbess.freeweb7.com/articles/www-pacifisti.html www pacifisti it] [http://elwandasais.marte.ro/meridian-idaho.html meridian idaho real estate] [http://extort.dynup.net/directory/roerich-museum.html nicholas roerich museum] [http://onitaransom.ifrance.com/article/vacuum-bags.html vacuum bags] [http://roxiegarfield.marte.ro/content/4th-of-july.html 4th of july ecards] [http://roseannecreasy.ifrance.com/q/computer-history.html computer history] [http://ociekollman.qiye.in/gun-shows.html gun shows] [http://ricardamontero.marte.ro/resources/work-from-home.html work from home computer business] [http://ameebelin.ifrance.com/ovation.html ovation pharmaceutical] [http://christabopp.wan.io/directory/fight-videos.html fight videos] [http://oracovert.wan.io/teach-georgia.html teach georgia] [http://onitaransom.ifrance.com/article/poetry-of-louis.html poetry of louis bourgeois] [http://stern.dynup.net/text/placement-agencies.html placement agencies in delhi] [http://dorathyboldt.ifrance.com/pool-tiles.html pool tiles] [http://marcieloveland.ifrance.com/styles/saphire-earings.html saphire earings] [http://corrinwages.ifrance.com/buy-swords-online.html buy swords online] [http://audiemuldoon.marte.ro/rock-bass.html rock bass] [http://onitaransom.ifrance.com/article/trawlers-for-sale.html trawlers for sale] [http://elwandasais.marte.ro/iron-man-competition.html iron man competition] [http://moraforth.ifrance.com/description/shawano-lake.html shawano lake] [http://bellasankey.myweb.io/anal-lesbian.html anal lesbian] [http://jocelynrieder.ifrance.com/william-shakespear.html picture shakespeare william] [http://found.dynup.net/rancy-milano.html rancy milano] [http://luellafinney.marte.ro/telex-headsets.html telex 850 headset] [http://maellsbe.forumvila.com/ meridia online] [http://wegillis.forumvila.com/ phentermine online] [http://bellasankey.myweb.io/n70-nokia-theme.html n70 nokia theme] [http://tiannarummel.datadiri.com/maria-menounos.html globe golden maria menounos] [http://tobygeiger.qiye.in/new/house-cleaning.html cleaning house service start] [http://elwandasais.marte.ro/national-park.html national park acadia] [http://mender.dynup.net/discount-eye-glasses.html discount eye glasses] [http://odiliaowensby.wan.io/amber-fog-lights.html amber fog lights] [http://odessachristens.marte.ro/chavez.html oscar chavez] [http://alixsherlock.ifrance.com/hamster-dance.html hamster dance] [http://zellawillaims.ifrance.com/new/manufactured.html manufactured stone veneers] [http://jolydian.freeweb7.com/blog/pannolini-per-neonati.html pannolini per neonati] [http://shonnathrush.ifrance.com/small/gordon-college.html gordon college barnesville ga] [http://sablaloc.freeweb7.com/new/cubisti.html cubisti] [http://carmelduggan.ecv.vg/data/motorola-v3com.html motorola v3.com] [http://kaseyguerrette.myweb.io/erotic-leather.html erotic leather lingerie] [http://corrinwages.ifrance.com/breezeway.html breezeway] [http://lucitabarez.marte.ro/styles/foundation-grant.html foundation grant writing] [http://lentus.dynup.net/haulover-beach.html hotel near haulover beach] [http://shirlharrill.ecv.vg/blog/my-immortal-lyrics.html my immortal lyrics] [http://audiemuldoon.marte.ro/judson-college.html judson college il] [http://beebarf.datadiri.com/q/business-liquidation.html business liquidation] [http://mendyhammers.marte.ro/lib/kneeboard.html forum kneeboard] [http://odessachristens.marte.ro/breeds-of-cats.html large domestic cat breed] [http://audiemuldoon.marte.ro/shawano-lake.html shawano lake] [http://child.dynup.net/view/free-party-invitations.html free printable slumber party invitation] [http://tribes.dynup.net/blog/thong-bikini-chicks.html thong bikini chicks] [http://earthahohman.qiye.in/pages/corn-gluten.html corn gluten] [http://shonnathrush.ifrance.com/small/stuck-in-the.html stuck in the middle with you] [http://extort.dynup.net/directory/flash-banner.html flash banner template] [http://antoninaloflin.datadiri.com/currency-conversion.html historical currency conversion rate] [http://marcieloveland.ifrance.com/styles/skywalker.html skywalker] [http://dominqueraines.ifrance.com/description/clint-eastwood.html clint eastwood movie] [http://found.dynup.net/free-tracfone.html free tracfone ringtone] [http://astw56.datadiri.com/rentclickscom.html rentclicks.com] 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 15:31, 21 January 2008
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