Difference between revisions of "Op amp"

From OpenCircuits
Jump to navigation Jump to search
m (Reverted edits by 61.235.241.69 (Talk); changed back to last version by 129.234.4.76)
Line 1: Line 1:
[http://lisonka-91.idilis.ro/those-were/ those were the days today in history] [http://lisonka-91.idilis.ro/online-date/ online date service] [http://irina5009189.idilis.ro/virginia-unauthorized/ virginia unauthorized practice of law] [http://ann-eva.idilis.ro/web/sunday-school.html sunday school] [http://lisonka-91.idilis.ro/basement-remodeling/ basement remodeling] [http://irina5009189.idilis.ro/honda-canada/ honda canada] [http://ann-eva.idilis.ro/web/lecker.html lecker] [http://irina5009189.idilis.ro/bare-minerals/ bare minerals] [http://shurrikk.idilis.ro/web/internet-casino.html internet casino] [http://lisonka-91.idilis.ro/services/ services] [http://irina5009189.idilis.ro/live-nude/ live nude toons] [http://irina5009189.idilis.ro/what-is/ what is cyclobenzaprine] [http://ronald180.idilis.ro/library/agency-jose/ agency jose redevelopment san] [http://ann-eva.idilis.ro/web/recipe-broccoli.html recipe broccoli salad] [http://irina5009189.idilis.ro/gforfree/ 3gforfree] [http://ann-eva.idilis.ro/web/residential-phone.html residential phone service] [http://ronald180.idilis.ro/library/s-club/ s club 7] [http://ronald180.idilis.ro/library/apartment-ski/ apartment ski france] [http://shurrikk.idilis.ro/web/seat-belt.html seat belt extension] [http://ronald180.idilis.ro/library/asian-lesbian/ asian lesbian] [http://lisonka-91.idilis.ro/equivalence-tests/ equivalence tests] [http://ann-eva.idilis.ro/web/add-favorite.html add favorite friend live space] [http://shurrikk.idilis.ro/web/tissue-type.html tissue type] [http://ronald180.idilis.ro/library/album-bright/ album bright eyes] [http://shurrikk.idilis.ro/web/bratz-play.html bratz play games] [http://ann-eva.idilis.ro/web/parc-du.html parc du mont royal] [http://lisonka-91.idilis.ro/monitoring-system/ monitoring system temperature] [http://lisonka-91.idilis.ro/free-bluegrass/ free bluegrass cellular ringtones] [http://irina5009189.idilis.ro/personalized-sports/ personalized sports cards] [http://lisonka-91.idilis.ro/gay-muscle/ gay muscle xxx] [http://lisonka-91.idilis.ro/video-poker/ video poker] [http://shurrikk.idilis.ro/web/rotten.html rotten] [http://lisonka-91.idilis.ro/shang-hai/ shang hai map] [http://lisonka-91.idilis.ro/part-time/ part time home jobs] [http://ronald180.idilis.ro/library/jumbo-records/ jumbo records] [http://shurrikk.idilis.ro/web/barbie-doll.html barbie doll] [http://ronald180.idilis.ro/library/cd-interest/ cd interest rate] [http://lisonka-91.idilis.ro/north-garland/ north garland high school garland texas] [http://ronald180.idilis.ro/library/zolpidem-online/ zolpidem online] [http://shurrikk.idilis.ro/web/racing-car.html racing car sales] [http://lisonka-91.idilis.ro/free-boost/ free boost mobile minutes codes] [http://irina5009189.idilis.ro/ebay-motorcycles/ ebay motorcycles] [http://irina5009189.idilis.ro/england-list/ england list passenger ship] [http://irina5009189.idilis.ro/tao-lin/ tao lin] [http://ronald180.idilis.ro/library/team-america/ team america the movie] [http://ronald180.idilis.ro/library/properties-for/ properties for rent in spain] [http://ronald180.idilis.ro/library/equipment-trailer/ equipment trailer plans] [http://irina5009189.idilis.ro/man-leather/ man leather slipper] [http://irina5009189.idilis.ro/black/ black] [http://ann-eva.idilis.ro/web/no-one.html no one to depend on lyrics] [http://ronald180.idilis.ro/library/korean-airline/ korean airline] [http://lisonka-91.idilis.ro/light-deflection/ light deflection] [http://ann-eva.idilis.ro/web/use-of.html use of clove] [http://shurrikk.idilis.ro/web/simcity-and.html simcity4 and downloads] [http://lisonka-91.idilis.ro/chevrolet-parts/ chevrolet parts] [http://lisonka-91.idilis.ro/car-insurance/ car insurance florida] [http://shurrikk.idilis.ro/web/vintage-american.html vintage american racing wheels] [http://lisonka-91.idilis.ro/picture-of/ picture of police dog] [http://lisonka-91.idilis.ro/used-class/ used class c motor homes] [http://shurrikk.idilis.ro/web/caverject.html caverject] [http://ronald180.idilis.ro/library/trouble-code/ trouble code for gm car] [http://ronald180.idilis.ro/library/united-artists/ united artists theaters philadelphia] [http://lisonka-91.idilis.ro/shrink-packaging/ shrink packaging equipment] [http://ann-eva.idilis.ro/web/adopt-a.html adopt a child in indiana] [http://lisonka-91.idilis.ro/zestril/ zestril] [http://ronald180.idilis.ro/library/latina-porn/ latina porn] [http://ronald180.idilis.ro/library/erotic-story/ erotic story index] [http://lisonka-91.idilis.ro/retrieve-information/ retrieve information] [http://irina5009189.idilis.ro/cover-models/ cover models] [http://irina5009189.idilis.ro/thao-nguyen/ thao nguyen] [http://ronald180.idilis.ro/library/south-carolina/ south carolina surf] [http://irina5009189.idilis.ro/on-a/ on a day like this lyrics] [http://ann-eva.idilis.ro/web/eighties-show.html eighties show tv] [http://irina5009189.idilis.ro/illinois-state/ illinois state tax file online] [http://ann-eva.idilis.ro/web/-april.html 11 april dvd new release] [http://shurrikk.idilis.ro/web/hardcore-fucking.html hardcore fucking] [http://ronald180.idilis.ro/library/sicom-nba/ sicom nba] [http://ronald180.idilis.ro/library/adding-pictures/ adding pictures with html] [http://ann-eva.idilis.ro/web/alex-hold.html alex hold up] [http://lisonka-91.idilis.ro/attack-bear/ attack bear black tn] [http://ronald180.idilis.ro/library/work-at/ work at home on the internet] [http://shurrikk.idilis.ro/web/marilyn-chambers.html marilyn chambers] [http://ronald180.idilis.ro/library/learning-spanish/ learning spanish audio cd] [http://ann-eva.idilis.ro/web/sofa-beds.html sofa beds] [http://irina5009189.idilis.ro/my-akita/ my akita] [http://irina5009189.idilis.ro/earth-global/ earth global history its people] [http://shurrikk.idilis.ro/web/biography-on.html biography on oprah winfrey] [http://lisonka-91.idilis.ro/art-clip/ art clip corel draw] [http://shurrikk.idilis.ro/web/mac-gamer.html mac gamer switch ad] [http://shurrikk.idilis.ro/web/entrepreneur-make.html entrepreneur make money] [http://irina5009189.idilis.ro/israel-facts/ israel facts] [http://ann-eva.idilis.ro/web/red-dress.html red dress] [http://ann-eva.idilis.ro/web/jenna-jamison.html jenna jamison free photos] [http://irina5009189.idilis.ro/picture-rome/ picture rome italy] [http://lisonka-91.idilis.ro/wedding-tables/ wedding tables] [http://ronald180.idilis.ro/library/will-sayer/ will sayer] [http://ronald180.idilis.ro/library/free-antispyware/ free antispyware] [http://ronald180.idilis.ro/library/delta/ delta] [http://irina5009189.idilis.ro/toyota-truck/ toyota truck parts] [http://lisonka-91.idilis.ro/kentucky-theater/ kentucky theater project] [http://ann-eva.idilis.ro/web/rolex-daytona.html rolex daytona] [http://lisonka-91.idilis.ro/silky-sheets/ silky sheets] [http://irina5009189.idilis.ro/ringers/ ringers] [http://ronald180.idilis.ro/library/skill-competency/ skill competency] [http://ronald180.idilis.ro/library/today-parenting/ today parenting style] [http://ann-eva.idilis.ro/web/indianapolis-colts.html indianapolis colts] [http://irina5009189.idilis.ro/plate-plastic/ plate plastic] [http://ann-eva.idilis.ro/web/acoustic-studio.html acoustic studio treatment] [http://lisonka-91.idilis.ro/rubber-sex/ rubber sex] [http://ronald180.idilis.ro/library/audio-source/ audio source speaker] [http://ann-eva.idilis.ro/web/lamictal.html lamictal] [http://ann-eva.idilis.ro/web/price-old.html price old silver coins] [http://ann-eva.idilis.ro/web/may-pokemon.html may pokemon] [http://lisonka-91.idilis.ro/liver-transplant/ liver transplant donors] [http://irina5009189.idilis.ro/penis-picture/ penis picture] [http://irina5009189.idilis.ro/ms/ ms6787] [http://ronald180.idilis.ro/library/hud/ hud] [http://ann-eva.idilis.ro/web/you-are.html you are a child of the universe lyrics] [http://irina5009189.idilis.ro/pepe-jeans/ pepe jeans] [http://irina5009189.idilis.ro/verison-wireless/ verison wireless picture] [http://irina5009189.idilis.ro/free-slot/ free slot machine] [http://lisonka-91.idilis.ro/metro-gun/ metro gun club mn] [http://irina5009189.idilis.ro/long-island/ long island lacrosse league] [http://irina5009189.idilis.ro/mexico-music/ mexico music traditional] [http://ann-eva.idilis.ro/web/bank-of.html bank of america cd rate] [http://lisonka-91.idilis.ro/release-of/ release of o level result 2005] [http://ann-eva.idilis.ro/web/internet-access.html internet access for the psp] [http://irina5009189.idilis.ro/online-program/ online program rn] [http://ann-eva.idilis.ro/web/kornakova-photos.html kornakova photos] [http://shurrikk.idilis.ro/web/hair-prom.html hair prom updos wedding] [http://lisonka-91.idilis.ro/elizabeth-hurley/ elizabeth hurley] [http://ronald180.idilis.ro/library/sausage-breakfast/ sausage breakfast pizza recipe] [http://ann-eva.idilis.ro/web/nipple-licking.html nipple licking] [http://ronald180.idilis.ro/library/pc-games/ pc games demo downloads] [http://irina5009189.idilis.ro/thatd-be/ thatd be all right] [http://shurrikk.idilis.ro/web/sympathy-expressions.html sympathy expressions] [http://ann-eva.idilis.ro/web/picture-sea.html picture sea splendour] [http://shurrikk.idilis.ro/web/how-much.html how much does it cost to build a garage] [http://ann-eva.idilis.ro/web/political-regimes.html political regimes] [http://shurrikk.idilis.ro/web/hair-care.html hair care] [http://lisonka-91.idilis.ro/ebony-model/ ebony model] [http://ann-eva.idilis.ro/web/face-paint.html face paint] [http://irina5009189.idilis.ro/father/ father] [http://irina5009189.idilis.ro/volkswagen-commercials/ volkswagen commercials golf] [http://ronald180.idilis.ro/library/air-pollution/ air pollution example] [http://lisonka-91.idilis.ro/best-buy/ best buy] [http://irina5009189.idilis.ro/automation-class/ automation class doesnt support] [http://shurrikk.idilis.ro/web/samsung-ringtone.html samsung ringtone] [http://irina5009189.idilis.ro/effects-of/ effects of caffeine on plants] [http://ronald180.idilis.ro/library/audio-conferencing/ audio conferencing n] [http://irina5009189.idilis.ro/washington-realty/ washington realty trust] [http://ann-eva.idilis.ro/web/interest-history.html interest history mortgage rate calculator] [http://shurrikk.idilis.ro/web/seasonal-sales.html seasonal sales] [http://irina5009189.idilis.ro/chicago-dating/ chicago dating sex] [http://irina5009189.idilis.ro/free-ringtone/ free ringtone motorola] [http://ronald180.idilis.ro/library/tear-me/ tear me down] [http://ronald180.idilis.ro/library/outdoors/ outdoors] [http://lisonka-91.idilis.ro/murphy-bed/ murphy bed with book case] [http://ronald180.idilis.ro/library/insulated-panel/ insulated panel wood] [http://ronald180.idilis.ro/library/tierce-magazine/ tierce magazine] [http://shurrikk.idilis.ro/web/www-employee.html www employee express] [http://shurrikk.idilis.ro/web/yag-laser.html yag laser] [http://ann-eva.idilis.ro/web/jeep-snow.html jeep snow plows] [http://shurrikk.idilis.ro/web/mcculloch-chain.html mcculloch chain saw] [http://ronald180.idilis.ro/library/positive-electrodes/ positive electrodes] [http://ann-eva.idilis.ro/web/pleasant-hawaiian.html pleasant hawaiian holidays] [http://ann-eva.idilis.ro/web/buy-diazepam.html buy diazepam online] [http://ann-eva.idilis.ro/web/physical-science.html physical science experiments] [http://lisonka-91.idilis.ro/famous-stars/ famous stars and straps hats] [http://ronald180.idilis.ro/library/south-holland/ south holland illinois county] [http://irina5009189.idilis.ro/professor-profit/ professor profit] [http://ronald180.idilis.ro/library/atl-let/ atl let me make it up with love lyrics] [http://ronald180.idilis.ro/library/eagle-rods/ eagle rods home] [http://lisonka-91.idilis.ro/in-in/ in in inclusion introduction proposal research school] [http://ann-eva.idilis.ro/web/mobile-n.html mobile n73 nokia phone] [http://ronald180.idilis.ro/library/types-of/ types of sediments] [http://shurrikk.idilis.ro/web/same-sex.html same sex marriage right] [http://ronald180.idilis.ro/library/electric-fireplace/ electric fireplace heater] [http://irina5009189.idilis.ro/listen-to/ listen to ace of base] [http://irina5009189.idilis.ro/auditing-assertion/ auditing assertion] [http://lisonka-91.idilis.ro/haylie-duff/ haylie duff] [http://lisonka-91.idilis.ro/il-fathers/ il fathers custody lawyers] [http://lisonka-91.idilis.ro/prague-student/ prague student travel europe] [http://lisonka-91.idilis.ro/environmental-construction/ environmental construction] [http://ann-eva.idilis.ro/web/anabolic-steroid.html anabolic steroid] [http://lisonka-91.idilis.ro/phoenix-suns/ phoenix suns tickets] [http://ronald180.idilis.ro/library/lynn-weiss/ lynn weiss] [http://irina5009189.idilis.ro/medical-supply/ medical supply clinton maryland] [http://irina5009189.idilis.ro/nathan-williams/ nathan williams] [http://ann-eva.idilis.ro/web/events-leading.html events leading to holocaust] [http://ronald180.idilis.ro/library/ls-models/ ls models] [http://irina5009189.idilis.ro/wedding-music/ wedding music] [http://lisonka-91.idilis.ro/river-market/ river market apartments] [http://ann-eva.idilis.ro/web/seniors-week.html seniors week australia] [http://ronald180.idilis.ro/library/american-day/ american day great] [http://ann-eva.idilis.ro/web/the-bureau.html the bureau of democracy human rights and labor] [http://ronald180.idilis.ro/library/crossword-puzzle/ crossword puzzle] [http://shurrikk.idilis.ro/web/left-hand.html left hand brewing company] [http://shurrikk.idilis.ro/web/nba-game.html nba game length] [http://irina5009189.idilis.ro/nail-product/ nail product professional] 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.
Line 30: Line 30:
 
* [http://www.edn.com/archives/1995/052595/11dfcov.htm "Choosing an op amp: it's no longer a trying task"] by Bill Schweber 1995
 
* [http://www.edn.com/archives/1995/052595/11dfcov.htm "Choosing an op amp: it's no longer a trying task"] by Bill Schweber 1995
  
* [http://www.epanorama.net/links/components.html  Basic electronics components list] lists 10 of the most common op-amp
+
* [http://www.epanorama.net/links/components.html  Basic electronics components list] lists 10 of the most common op-amps.
1000
 
s.
 
  
 
* [http://zero-distortion.com/tests/tweaking.htm "Tweaking" by Dejan V. Veselinovic]
 
* [http://zero-distortion.com/tests/tweaking.htm "Tweaking" by Dejan V. Veselinovic]

Revision as of 17:00, 10 November 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