Op amp

free caller ringtones cheap ortho cheap paxil motorola ringtones cheap carisoprodol replica rolex watches toques ringtones free funny ringtones cheap ultram cheap norvasc motorola ringtones free sonyericsson ringtones cheap ringtones buy clomid hindi ringtones cheap ritalin buy valtrex cheap flexeril cheap zyban zoloft buy metformin free turkey ringtones mp3 ringtones car rental ativan retro ringtones pharmacy online online accutane t-mobile ringtones paxil online cheap ephedrine vigrx online free cingular ringtones cheap cialis cellular ringtones wellbutrin online sprint ringtones albuterol online ultracet online cheap celebrex phendimetrazine online free tmobile ringtones alltel ringtones buy norco cheap cipro darvon free audiovox ringtones free animal ringtones buy zocor real ringtones buy celexa cheap celebrex cheap hoodia tenuate cheap protonix turkey ringtones free mtv ringtones vardenafil cheap didrex sony ringtones cheap adderall free cool ringtones diovan cheap pharmacy online cheap norco americanairlines cheap xanax free sonyericsson ringtones oxycontin cheap buspar cheap provigil cheap diazepam cheap sibutramine order xanax true ringtones free midi ringtones free wwe ringtones alprazolam cheap ephedra cheap ambien pantech ringtones cheap morphine cheap lortab atenolol online buy amoxicillin cheap hydrocodone cheap xenical cheap phendimetrazine cheap wellbutrin free real ringtones home mortgage loans cheap cipro cheap diazepam polyphonic ringtones buy sildenafil cheap propecia cheap xenical phentermine cheap ativan order zoloft biz time partita calcio on line rote lippen digilux 1 i predatori di atlantide the beach boys the lost concert oroscopo sagittario concerto rosso garmin gps 76cs memoria ddr 333 2700 yor palm treo 650 in bed with faith foto di valentina mac tastiera valerie hp 7960 pesto duro francesca piri obiettivi af 70300 nikon tsg convertitore mp3 in mmf polisportiva palermo www bratzpack com motorola a 100 hyundai coupe giochi biliardo scaricare monitor 17 samsung multimediale scaricare filmati gratis lettori dvd vcr toshiba plotter hp designjet 4000 la serenissima t f vs moltosugo nonne porno asus a620 bt kit gps giubbotti pirelli la cattura guanti per calcio sapphire fireblade tesi di laurea sociologia villaricca regolamento gel per unghie pagina principal blaupunkt gps e elsa raposo dispenser sapone nuova guinea reflex digitale fuji s4 translate frasi per battesimi u8110 km0 kia carnival diesel auto km 0 johnson decapitacion la borderie bertrand de aciclovir eg 25 cpr 200 mg fuego misa criolla femal orgasm lg tv retroproiezione koenigsmark genova londra abbigliamento cavalli in velluto foto green day ngo thanh van zoccole bone mia martini murolo manuale frontpage ton ia i green river finanziamenti opel nikkor 28200 g l eco der core petr north v3 black edition guardiaforestale vir lettore dvd pioneer videoregistratore firewire j en ai marre alizee bebe confort cocoon hoima flauto dolce spartiti iskon portal fotografia de americano degollado perfection 3170 seven kingdoms 2 cuore nero indigena makeupartist mp3 ypt6z 1 gb convertitori dac castelbellino driver per scanner trust colonne sonore romantiche soluzione neverwinter nights lady bugs hyundai km zero tribalistas velha infancia easy cd e dvd creator 6 pita pita del sadame 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

• Daisy's theorem: standard op-amp design

• "APPLICATION NOTE 738: Minimizing Component-Variation Sensitivity in Single Op Amp Filters"

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

• "Select the Right Operational Amplifier for your Filtering Circuits" by Bonnie Baker 2003

• "Choosing an op amp: it's no longer a trying task" by Bill Schweber 1995

• [http://www.epanorama.net/links/components.html Basic

1000

electronics components list] lists 10 of the most common op-amps.

• "Tweaking" by Dejan V. Veselinovic

• "How to choose the right bipolar op amp" by J. Scott Elder 2005-12-23

---