Op amp

From OpenCircuits
Revision as of 14:14, 16 August 2007 by 221.232.159.112 (talk)
Jump to navigation Jump to search

elenco hotel lisbona breathe easy base vaio mouse e tastiere il divo ginnastica artistica non lo fai per amore driver flash disk georgos mazonakis mp3 de noche en la ciudad image msn com seagate momentus 4200 2 liceo e pascal weasle condizionatori carrier bloodrayne arriva su psp home theater bose www cgilscuola it rieti fisio 630 pensioni rimini figa nera it s wonderful world data backup pady pank everything that glitters classe 15 con attestato di rischio socket sdio haiducci dragosta din tei trombone pistoni un caso fortunato ford racing 2 acer 512mb usb mp3 lexus ls 400 ministero per i beni e le attivita culturali nikon f-100 he shape of my hear luan zhegu stampanti hp laserjet 2100 giochi del mare istituti paritari a siracusa saalian bilabiale gianna singole la situazione di advance wars pioneer dv 380-s hotspot super filmotheque lettore mp3 registratore 1gb konica minolta dimage 7i servants phone center servizi dimage e 323 konica minolta il mito di protagora platone dfi nf4 infinity microsoft money 2005 creative lettore mp3 muvo tx se alaia vestito giorgia palmas fakes www stronng com news furgoni mercedes benz aoc 19 monitor supermerca 2 le ragazze del wrestling ragazzo bollate justin timberlake like i love you grand hotel aston maniglie maniglieria bci 3000 cd doobie brothers f c barcelona last minut com it el carro de mustang pavo album digitale toner type 1220d video di carolina marconi maglie datch snuff machinery portoni sezionali asus pda carmel ristorante o zone dragostea din tei video toshiba r100 card reader 3 5 emily transex i cavalieri dello zodiaco - la leggenda coldplay video colin macrae rally wheda rimorchio usati codici sblocco telefonini toyota prius problemi strictly come dancing copertina di fifa2005 flaminia du parc coco n club photo gratis con vagina rom di killer instinct microonde panasonic forno ventilato tutto citta roma www webpatente it venditori tecnici (regione piemonte - torino provincia) x-men 1.5 - x-treme edition amd 64 4400 x2 cuffie musica jotuni, maria hard disk serial ata 150 200gb bassa danza wave master agriturismo mugello adult entertainment ennio morricone valore auto usata eurotax comune milano locchio della spirale daryl hannah playboy orient automatico lei 55 cicciolina e il suo cavallo testo from sarah with love sposati lucarelli selvaggia repent walpurgis vacanza estate 2004 sardegna www dabizzi it auricolare bluetooth per palmari saitek impact x6-38u dual analog pad palestra milano angelo caroli club i ricordi e le persone noemi gonzales eva ferrari labrador regalo canon digital ixus ii petrucciani bassey non me lo so spiegare di tiziano ferro inter diretta wrongful death ragazzo orbetello keane live recordings 2004 de maria c srl preouts porno black corse dei cavalii software download caught in a middle kyosho caliber www belgacom be linksys adattatore ftry acer lcd al1715 gioco di barbie aspirapolvere scope elettriche t2xp l testo canzone thank you di jamelia i don t want to miss a think mapsource points of interest laurax it ogni volta di vasco workcentre pe16 mx vs atv unleashed amateur anal fotos perreo www rinnovamento nello spirito it hit mania estate 2004 bagnati bellissime ragazze lupo 1 4 tdi e-film memory card summer jam music tessennano voli per la sardegna route 66 kit nativita gummi fenny bravo affitto casa vacanza sirmione compilation festival bar tesi scienze statistiche caratteristiche ottimo amplificatore per hi fi digiuno gianrusso age of space lettore mp3 fm mmc yo no soy tu marido cd danza ford livorno ditta fantozzi altavilla jessica ogle seggiolino per auto chicco luccio dalla le nuove foto di costantino e daniele sony vaio v2s batteria universale lettori cd e radio agenzia delle entrate lecco battista double layer portatili 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