Difference between revisions of "Integrated Circuits"

From OpenCircuits
Jump to navigation Jump to search
(rvv)
Line 1: Line 1:
−
== Digital Potentiometers ==
+
[http://sleek.portrelay.com/text/think-of-me-phantom.html think of me phantom of the opera] [http://olesinok.hostinggratisespana.com/library/thai-teens.html thai teens] [http://dismal.my03.com/text/pure-volume-my.html pure volume my chemical romance] [http://frail.xxxy.info/resources/bdsm-supplies.html bdsm supplies] [http://haste.mrbonus.com/view/scr.html testing scr] [http://mails.portrelay.com/q/alex-kingston.html alex kingston nude picture] [http://unroot.my03.com/data/beheading.html beheading] [http://cheryshowman.w8w.pl/star-wars-the.html star wars the sith lords xbox cheats] [http://griscool15.orgfree.com/view/website-hosting.html website hosting cheap] [http://annual.portrelay.com/small/netscape-radio.html netscape plus radio] [http://store.portrelay.com/buy-tamiflu.html clothed female naked male] [http://prater.dns05.com/lib/carole-laure.html carole laure] [http://kanesharawlinso.coolpage.biz/small/band-names.htm band names] [http://shiver.myftp.info/pages/mexican-prostitutes.html mexican prostitutes] [http://store.portrelay.com/la-vie-picasso.html la vie picasso] [http://thestarsgoblue.22web.net/html/nba-logos-2005.html nba logos 2005] [http://dismal.my03.com/text/pressings.html vinyl pressing] [http://dumbe.my03.com/directory/inline-oregon-portland.html inline oregon portland skating] [http://annual.portrelay.com/small/sportslinecom.html cbs sportsline.com] [http://brawns.my03.com/html/spring-break-drinking.html spring break drinking statistics] [http://griscool15.orgfree.com/view/verbal-iq-performance.html verbal iq performance iq] [http://devorasievert.w8w.pl/articles/c-17.html c-17] [http://knight.portrelay.com/topic/tell-me-about-yourself.html survey yourself] [http://frame.portrelay.com/skinny-puppy-lyric.html skinny puppy lyric] [http://deonseymour.coolpage.biz/wiki/pay-verizon-phone.html pay verizon phone bill] [http://annual.portrelay.com/small/tycoon-games.html tycoon games] [http://frail.xxxy.info/resources/14yo-nude.html 14yo nude] [http://cheryshowman.w8w.pl/find-jobs-in-canada.html find jobs in canada] [http://lorettamcglade.w8w.pl/western-hats.html western hats] [http://saith.my03.com/mountain-lodge.html mountain lodge breckenridge] [http://catdog20.hostinggratisvenezuela.com/time-in-lahore.html time in lahore] [http://shammersa.orgfree.com/blog/wholesale-shirts.html wholesale shirts] [http://liable.portrelay.com/manilva.html manilva] [http://unroot.my03.com/data/modeled-erythema.html modeled erythema] [http://lorettamcglade.w8w.pl/famous-models.html famous models] [http://olesinok.hostinggratisespana.com/library/honda-generator.html honda generator service manuals] [http://liable.portrelay.com/masonry-hammers.html masonry hammers] [http://cheryshowman.w8w.pl/oh-ya.html oh ya] [http://bated.portrelay.com/erotica-letter.html erotica letter mature woman] [http://novel.ftpserver.biz/candythumbs.html candythumbs] [http://slunk.almostmy.com/new/playboy-game.html playboy mansion ps2 game] [http://saith.my03.com/hampton-bay.html bay furniture hampton patio] [http://angers.my03.com/description/mtv-fraternity.html mtv fraternity life] [http://mails.portrelay.com/q/mature-women-naked.html free naked mature woman] [http://eloisapettit.22web.net/library/disney-channel.html disney channel thats so raven] [http://sleek.portrelay.com/text/100-citizenship.html 100 citizenship interview question] [http://erset.ddns.ms/iberia-airline.html airline booking iberia] [http://skein.yourtrap.com/john-holmes-dick.html john holmes dick] [http://tanyahale.w8w.pl/siemens-hearing.html siemens hearing aids] [http://ladies.dhcp.biz/swollen-prostate.html swollen prostate] [http://mollyschippers.w8w.pl/new/east-mountain.html east mountain real estate albuquerque] [http://christinenanney.22web.net/canon-zr100-mini.html canon zr100 mini dv camcorder] [http://shammersa.orgfree.com/blog/wood-play-structure.html wood play structure plans] [http://yearns.my03.com/wiki/korean-nursery.html korean nursery] [http://dumbe.my03.com/directory/boardshorts.html boardshorts] [http://yearns.my03.com/wiki/girls-first-orgasm.html girls first orgasm story] [http://cover.my03.com/resources/weather-jamaica.html negril jamaica weather] [http://skein.yourtrap.com/sc-waterfront-real.html sc waterfront real estate] [http://anneliesechewni.22web.net/web/oregon-state-board.html oregon state board of nursing] [http://frame.portrelay.com/maria-maria.html maria swann] [http://anamariasavard.w8w.pl/articles/clickbank-market.html clickbank market solutions clickbank info go2clickbank.com] [http://yearns.my03.com/wiki/seafoam-additives.html seafoam additives] [http://mails.portrelay.com/q/addictions.html addictions] [http://bated.portrelay.com/dish-network-receiver.html dish dvr hd network receiver] [http://cheryshowman.w8w.pl/pets-shop-london.html pets shop london] [http://angers.my03.com/description/amon-carter-museum.html amon carter museum of western art] [http://ladies.dhcp.biz/redneck-sex.html redneck sex] [http://slunk.almostmy.com/new/tara-reid-boobs.html tara reid boobs] [http://kerriecrook.w8w.pl/memory-cats.html memory cats] [http://mollyschippers.w8w.pl/new/graduation-cap.html graduation cap and gown] [http://krolyaka.hostinggratisespana.com/koi-carp.html koi carp] [http://olesinok.hostinggratisespana.com/library/custom-engraved.html custom engraved gift] [http://shiver.myftp.info/pages/diabetes-cure.html type 2 diabetes cure] [http://yearns.my03.com/wiki/a-new-ore-sample.html a new ore sample warcraft] [http://frail.xxxy.info/resources/themed-weddings.html beach cake themed wedding] [http://brief.portrelay.com/watership-down.html watership down soundtrack] [http://yearns.my03.com/wiki/kate-winslet.html height kate weight winslet] [http://avrilkdo.hostinggratisespana.com/topic/lamborghini-picture.html lamborghini picture] [http://bated.portrelay.com/hairy-young-men.html hairy young men] [http://dumbe.my03.com/directory/allison-williams.html allison williams video] [http://beaten.portrelay.com/q/landreth-play-therapy.html landreth play therapy art] [http://beaten.portrelay.com/q/canna.html canna] [http://griscool15.orgfree.com/view/australia-western.html australia western plateau] [http://mollyschippers.w8w.pl/new/bbc-news-online.html bbc news online] [http://shammersa.orgfree.com/blog/celebrity-nipple.html celebrity nipple slips] [http://saith.my03.com/stlucia-news.html st.lucia news] [http://devorasievert.w8w.pl/articles/min-pin.html min pin] [http://beaten.portrelay.com/q/list-of-female.html naked female celebrity] [http://tanyahale.w8w.pl/wallpapers-download.html wallpapers download for free] [http://betsyharwood.w8w.pl/resources/mcs.html mcs] [http://yearns.my03.com/wiki/self-defence.html self defence class] [http://unroot.my03.com/data/cheap-phentermine.html kates naked outtakes playground sexy] [http://yearns.my03.com/wiki/king-kutter-blades.html king kutter blades] [http://novel.ftpserver.biz/beautiful-boys.html beautiful boys] [http://yearns.my03.com/wiki/potato-cannon.html potato cannon plans] [http://liable.portrelay.com/maryann.html maryann and the professor] [http://destin.my03.com/georgiagov.html georgia.gov] [http://olesinok.hostinggratisespana.com/library/gay-celebrities.html gay celebrities] [http://haste.mrbonus.com/view/scottish-kilt.html scottish kilt rental] [http://sleek.portrelay.com/text/us-passport.html application form passport us] [http://frail.xxxy.info/resources/branson-missouri.html branson missouri wedding locations] [http://dismal.my03.com/text/music-download.html opalescence tooth whitening gel] [http://frail.xxxy.info/resources/nina-hartley.html anal hartley nina pic] [http://bated.portrelay.com/pink-hearts.html pink hearts] [http://skein.yourtrap.com/blowing-in-the.html wind blowing a tree] [http://slunk.almostmy.com/new/free-scat-pictures.html free scat pictures] [http://saith.my03.com/jeep-wj-wheels.html jeep wj wheels] [http://sleek.portrelay.com/text/half-price-books.html half price books] [http://dismal.my03.com/text/boost-immune-system.html boost immune system vitamin] [http://unwise.ninth.biz/web/big-latin-boobs.html big latin boobs] [http://kerriecrook.w8w.pl/free-movie-samples.html free movie samples] [http://lorettamcglade.w8w.pl/albany-news.html albany news 13] [http://cover.my03.com/resources/acrilico-venda.html acrilico venda] [http://frame.portrelay.com/holiday-bargains.html holiday bargains] [http://annual.portrelay.com/small/kilogram-conversion.html kilogram conversion table] [http://mails.portrelay.com/q/motorcycle-accidents.html motorcycle accident lawyer los angeles] [http://yearns.my03.com/wiki/latin-babes.html babe busty latin] [http://annual.portrelay.com/small/exterminator-odor.html exterminator odor smoke] [http://sleek.portrelay.com/text/hair-brush.html camel hair brush] [http://eloisapettit.22web.net/library/boys-tied-up.html boys tied up] [http://cover.my03.com/resources/fleece-blanket.html blanket fleece] [http://destin.my03.com/kpmg-audit-committee.html kpmg audit committee] [http://dismal.my03.com/text/ibs-drugs.html doctor doctor drug eliminate free free ibs life live may may not not pain paperback symptom tell tell tm] [http://cheryshowman.w8w.pl/i-never-loved-a.html i never loved a man lyrics] [http://erset.ddns.ms/real-estate-littleton.html real estate littleton colorado] [http://lorettamcglade.w8w.pl/kelly-morgan-squash.html kelly morgan squash] [http://haste.mrbonus.com/view/holding-boobs.html girl holding boob] [http://kanesharawlinso.coolpage.biz/small/estilo-boutique.htm estilo boutique] [http://thestarsgoblue.22web.net/html/dont-panic.html dont panic] [http://slanj.hostinggratisvenezuela.com/sexual-art.html sexual art] [http://brawns.my03.com/html/valentinos-south.html valentinos south st paul mn] [http://anamariasavard.w8w.pl/articles/rafa-desnudo.html rafa desnudo] [http://olesinok.hostinggratisespana.com/library/machine-shops.html machine shops] [http://avrilkdo.hostinggratisespana.com/topic/online-home-loan.html online home loan] [http://catdog20.hostinggratisvenezuela.com/ac-dc-cds.html ac dc cds] [http://krolyaka.hostinggratisespana.com/dvd-replication.html dvd replication services] [http://unroot.my03.com/data/ohio-secretary.html ohio secretary of state] [http://shammersa.orgfree.com/blog/sexy-girl.html sexy girl] [http://beaten.portrelay.com/q/classy-celebs.html classy celeb nude] [http://prater.dns05.com/lib/bulma-from-dbz.html bulma from dbz in a bikini] [http://olesinok.hostinggratisespana.com/library/career-guide.html career guide] [http://knight.portrelay.com/topic/tracy-beaker.html tracy beaker game] [http://mails.portrelay.com/q/little-summer.html little summer] [http://catdog20.hostinggratisvenezuela.com/free-antivirus-programs.html free antivirus programs] [http://slunk.almostmy.com/new/hot-teen-pussy.html hot wet teen pussy] [http://frame.portrelay.com/maian-anderson.html maian anderson biography] [http://slanj.hostinggratisvenezuela.com/water-orgasm.html water orgasm] [http://brief.portrelay.com/www-big-tit.html www. big tit] [http://betsyharwood.w8w.pl/resources/winamp-convert.html winamp convert mp3 to wav] [http://kanesharawlinso.coolpage.biz/small/llama.htm llama] == Digital Potentiometers ==
 
[[Digital Potentiometers|Digital Potentiometers(AD5204)]]
 
[[Digital Potentiometers|Digital Potentiometers(AD5204)]]
 
The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.
 
The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.
Line 22: Line 22:
 
'''NOTE:''' Only the DIP-14 version (image) has the Vz pin, which is used for negative regulators. The Metal Can and the Flat-Pack do not have enough pins so exclude the Vz.
 
'''NOTE:''' Only the DIP-14 version (image) has the Vz pin, which is used for negative regulators. The Metal Can and the Flat-Pack do not have enough pins so exclude the Vz.
 
|-
 
|-
−
|  
+
|
−
|-
 
−
! colspan="2" align="left"| Switching Regulators
 
−
|-
 
−
| align="center"| [[Image:MCP1253-ADJ.png|69px]]<br>[[MCP1252/3]]
 
−
| Extremely Efficient, 120mA Flyback Switching Regulators.
 
−
|-
 
−
|}
 
−
 
 
−
== Microcontrollers ==
 
−
 
 
−
Microcontrollers are little computers on a single Die/Package.  The computer includes a CPU core, RAM, ROM/FLASH, and peripherals including UARTS, A/D converters, SPI, and I2C. Most modern microcontrollers use FLASH ram instead of a ROM so they can be programmed over and over.  Many modern microcontrollers allow self-flashing to enable bootloading or a firmware update without pulling the chip from the circuit or using a programmer/debugger. Microcontrollers tend to be more optimizated for writting in assembly then PCs, but C and less so Basic are becoming the standard programming languages.
 
−
 
 
−
* [[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH Microcontroller from Philips. The  [http://coridiumcorp.com/arm7/ "$49" "Coridium ARMmite"]  does use this chip.
 
−
* [[Atmel]] AVR 8 bit FLASH microcontrollers
 
−
* [[Microchip]] PIC 8 bit FLASH microcontrollers
 
−
* [[Microchip]] dsPIC/PIC24 16 bit FLASH microcontrollers ( [[DsPIC30F 5011 Development Board]] )
 
−
* [[Microchip]] PIC32 32 bit FLASH microcontrollers
 
−
* Cypress PSoC 8 bit FLASH microcontrollers
 
−
 
 
−
''I've written a little about the various kinds of microcontrollers at [http://en.wikibooks.org/wiki/Embedded_Systems/Particular_Microprocessors Wikibooks: Embedded Systems]. --[[User:DavidCary|DavidCary]] 06:15, 10 March 2007 (PST)''
 
−
 
 
−
== Op Amps ==
 
−
 
 
−
Op amps and instrumentation amps.
 
−
 
 
−
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. Very high gain differential amplifiers.  Feedback through a resistor network is used to adjust final gain.  Resistors and capacitors can be placed in the feedback path to create complex circuits such as filters. Used to condition signals received from sensors.
 
−
* [[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]]  - Low Power, Single Resistor Gain Programmable, Precision Instrumentation Amplifier
 
−
* [[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal - Dual/Quad Low Power Precision, Picoamp Input Op Amps
 
−
* [http://en.wikibooks.org/wiki/Electronics/Op-Amps Wikibooks:Op-Amps] has a "quick design process" using Daisy's theorem: ''"The sum of the gains = +1 in a properly-designed op amp circuit."''
 
−
* [http://ciphersbyritter.com/RADELECT/PREOPAMP/OPAMPDSN.HTM "Some Op Amp Audio Design Issues"] by Terry Ritter
 
−
* [http://focus.ti.com/lit/an/slod006b/slod006b.pdf "Op Amps for Everyone" ] Great free book that describes a large number of Op-Amp circuits including single rail variation.  A pay version is available at Amazon.  I don't know what the differences are between the two versions.
 
−
 
 
−
== logic gates ==
 
−
 
 
−
Logic gates are the building blocks of digital circuits.  Any digital circuit including microprocessors can be built out of the NOT function plus AND or OR. 
 
−
 
 
−
Common forms found in descrete gates:
 
−
* NAND - NOT of an AND
 
−
* NOR - NOT of an OR
 
−
* XOR - exclusive or
 
−
* Flip-Flop - A 1 bit storage element that can be built out of more fundamental logic gates.  Often available in packages of 8 and sold by the name of Latch or Register.
 
−
 
 
−
Descrete gates are available in a very large number of variations.  The variations include TTL or CMOS inputs, standard vs. open collector outputs, and propagation delay.
 
−
 
 
−
* NAND gate: [http://www.coprolite.com/art48.html "Using a NAND Gate for a Set/Reset Latch"] (the 74HC132 Schmitt-trigger quad NAND is better than the 74HC00 quad NAND).
 
−
* [http://people.freenet.de/dieter.02/alu_4.htm "Multiplexers: the tactical Nuke of Logic Design"] by Dieter Mueller 2004 (74153)
 
−
 
 
−
There are hundreds of other specialized logic gates. Here we only list the ones we actually use in some Open Circuit [[Projects|Project]]:
 
−
 
 
−
* 74HC595 eight bit shift register with output latch (used for POV display)
 
−
 
 
−
* Low pin count( 8 - 12 ) microcontrolers are great for logic gate replacement when high speed is not required.  Athough slower, slightly more expensive, and needing to be programmed they are great for prototyping due to the extra flexibility that comes from not needing to stock lots of gate variations.
 
−
 
 
−
* FPGAs are flexible ICs contain a very large number of gates( thousands to millions ) that can be arbitrarly connected together through programming in VHDL.  Only available in surface mount large pin counts.  It's possible to prototype processor designs with these devices.
 
−
 
 
−
== RF ICs/Modules ==
 
−
 
 
−
RF modules allow transmission and reception of digital signals over radio.  The two most common types are AM and FM( FSK ).  The three major frequency bands used by unlicensed devices are 433MHz, 900MHz, and 2.4GHz.  433MHz has very limited uses by the FCC and is mostly used by garage door openers and wireless key entry systems.  Many newer devices are moving to 2.4GHz due to the greater amount of room, althrough 2.4GHz is harder to use and has less range then the same power 900MHz system.
 
−
 
 
−
A major consideration when choosing an RF IC/Module is the amount of protocol stack that the device contains.  Some modules are little more then a modulator and demodulator with the digial imput and output directly controlling the RF signal to serial line wire replacement modules that implement frequency hopping, pairing, error correct/detection, and retransmission of broken data.
 
−
 
 
−
[http://www.linxtechnologies.com/ Linx Technologies] makes several low power RF transmitter/receiver chips. Their range is around 500' - 1000'. They are geared for one way communication only, like keyless entry systems. They also make several serial encoding chips that make the wireless communication more secure/crack proof. Their latest chip, the HS series, is based upon the SkipJack algorithm developed by the NSA. BBA broadband ampifier modules are available for boosting the signal power to 17dBm when combined with the HP-3 modules and FHSS techniques.
 
−
 
 
−
[http://www.maxstream.net XBee/XBee Pro modules] Modules are a drop in Zigbee module.  Modules have a UART style interface with an AT command set.  Cheap and very popular, these modules are great for serial cable replacement or remote sensor monitoring.
 
−
 
 
−
[http://www.sparkfun.com/commerce/product_info.php?products_id=8469 Sparkfun Bluetooth Module] Dropin module with a complete Bluetooth stack.  Modules also have a UART interface with a AT command set.  An advantage is many laptops and cellphones have a Bluetooth transceiver builtin.
 
−
 
 
−
[http://www.sparkfun.com/commerce/product_info.php?products_id=705 Nordic Modules from Sparkfun] Tranceiver modules that have a SPI interface and are capable of transmitting packets at 1Mbps.  Modules implement packet indentification and CRC checksum compution but don't have a protocol stack per say.  A large number of channels are available making FHSS possible, but the modules has a maximum power of 0dBm making them only suitable for short range communication.
 
−
 
 
−
[http://www.semtec.com/XE1205 XE1205 Chip from Semtec] Transceiver IC with builtin 15dBm power amplifer.  IC has a SPI interface with the data being transmitted with any wire format(NRZ/Manchester).  DP1205 dropin modules are available which contain all the necessary descrete components.  IC allows very rich configuration including frequency down to 500Hz, frequency deviation, and baseband filter.  Available in 433MHz and 900MHz versions.
 
−
 
 
−
[http://www.cypress.com/ Cypress Semiconductor] makes several 2.4ghz transceiver modules, which are available for sampling, and are fully assembled with PCB antennas. They use SPI to be configured and to communicate with the microcontroller. The CYWM6934 (10 meter range) and CYWM6935 (50 meter range) are both very easy to interface with. [[User:Ratmandu|ratmandu]] 20:06, 23 November 2007 (PST)
 
−
[[Category:Components]]
 
−
 
 
−
== ADC analog to digital converter ==
 
−
 
 
−
There are a huge variety of ADCs available.
 
−
 
 
−
If you need 10 bits or less of resolution,
 
−
counter-intuitively,
 
−
it costs less to buy an ADC plus a microcontroller on one chip
 
−
than to buy a stand-alone ADC.
 
−
 
 
−
* ATTINY13V -- lowest-price chip I know of with at least one 10 bit ADC
 
−
* ATTINY261 -- lowest $/ADC chip I know of
 
−
* LPC2101FBD48 -- lowest-price 32-bit microcontroller I know of with at least one internal 10 bit ADC
 
−
 
 
−
Many people (*) do EKGs with only 10 bit converters.
 
−
 
 
−
The [[Programmable Chip EEG]] might need more bits of resolution.
 
−
 
 
−
What low-cost ADC are available with at least 12 bits? ''(prices in quantity 1 from Newark or Digikey)''
 
−
* $2.50 MCP3301 has 1 ADC input (13 bits)
 
−
* $3.50 MCP3302 has 2 ADC input (13 bits)
 
−
* $3.50 MCP3204 has 4 ADC input (12 bits)
 
−
* $4 MCP3208 has 8 ADC input (12 bits)
 
−
* $7 dsPIC30F 2011 microcontroller has 8 ADC inputs (12 bits). See [[dsPIC30F 5011 Development Board]] for details.
 
−
* $10 18F2553 USB microcontroller has 12bit ADC( $5.11 from http://buy.microchip.com in single unit quantities )
 
−
* $6.50 CY8C27443 Cypress PSoC microcontroller has 4 ADC inputs (14 bits) -- but what is the sampling rate? Also has 4 DAC outputs (9 bits).
 
−
* $56 analog devices AD7716: four independent, simultaneous 22 bit ADCs.
 
−
* [http://www.maxim-ic.com/appnotes.cfm/an_pk/885 the Maxim MAX1460 includes a 16-bit ADC, 12-bit DAC], a programmable gain amp (PGA), temp sensor, and 16-bit processor. (Alas, its program is in unchangeable ROM).
 
−
* Analog Devices AduC812: 200kHz 12-bit ADC, 12-bit DAC, and flash-based 8051 MCU core.
 
−
 
 
−
''I am astonished to discover that (a few) microcontrollers include 12 bit or more ADCs. Are there others? --[[User:DavidCary|DavidCary]] 18:48, 28 August 2007 (PDT)''
 

Revision as of 17:37, 23 December 2007

think of me phantom of the opera thai teens pure volume my chemical romance bdsm supplies testing scr alex kingston nude picture beheading star wars the sith lords xbox cheats website hosting cheap netscape plus radio clothed female naked male carole laure band names mexican prostitutes la vie picasso nba logos 2005 vinyl pressing inline oregon portland skating cbs sportsline.com spring break drinking statistics verbal iq performance iq c-17 survey yourself skinny puppy lyric pay verizon phone bill tycoon games 14yo nude find jobs in canada western hats mountain lodge breckenridge time in lahore wholesale shirts manilva modeled erythema famous models honda generator service manuals masonry hammers oh ya erotica letter mature woman candythumbs playboy mansion ps2 game bay furniture hampton patio mtv fraternity life free naked mature woman disney channel thats so raven 100 citizenship interview question airline booking iberia john holmes dick siemens hearing aids swollen prostate east mountain real estate albuquerque canon zr100 mini dv camcorder wood play structure plans korean nursery boardshorts girls first orgasm story negril jamaica weather sc waterfront real estate oregon state board of nursing maria swann clickbank market solutions clickbank info go2clickbank.com seafoam additives addictions dish dvr hd network receiver pets shop london amon carter museum of western art redneck sex tara reid boobs memory cats graduation cap and gown koi carp custom engraved gift type 2 diabetes cure a new ore sample warcraft beach cake themed wedding watership down soundtrack height kate weight winslet lamborghini picture hairy young men allison williams video landreth play therapy art canna australia western plateau bbc news online celebrity nipple slips st.lucia news min pin naked female celebrity wallpapers download for free mcs self defence class kates naked outtakes playground sexy king kutter blades beautiful boys potato cannon plans maryann and the professor georgia.gov gay celebrities scottish kilt rental application form passport us branson missouri wedding locations opalescence tooth whitening gel anal hartley nina pic pink hearts wind blowing a tree free scat pictures jeep wj wheels half price books boost immune system vitamin big latin boobs free movie samples albany news 13 acrilico venda holiday bargains kilogram conversion table motorcycle accident lawyer los angeles babe busty latin exterminator odor smoke camel hair brush boys tied up blanket fleece kpmg audit committee doctor doctor drug eliminate free free ibs life live may may not not pain paperback symptom tell tell tm i never loved a man lyrics real estate littleton colorado kelly morgan squash girl holding boob estilo boutique dont panic sexual art valentinos south st paul mn rafa desnudo machine shops online home loan ac dc cds dvd replication services ohio secretary of state sexy girl classy celeb nude bulma from dbz in a bikini career guide tracy beaker game little summer free antivirus programs hot wet teen pussy maian anderson biography water orgasm www. big tit winamp convert mp3 to wav llama == Digital Potentiometers == Digital Potentiometers(AD5204) The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.

Unlike a mechanical POT, digial POTs often have the restriction that the three terminals of the POT needs to be < VCC and > GND making these devices harder to use in applications such as LCD contract adjustment where the contrast is controlled by a voltage lower then GND.

Voltage Regulators

Linear Regulators
LT1528
LT1528 		High current, Variable Voltage Regulator
TPS V-Reg
TPS V-Regs 		These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.
Main-LM7805.jpg
Basic Voltage Regulators 		Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.
UA723CN Symbol.gif
The 723 Voltage Regulator 		Precision Voltage Regulator. Can be used as fixed or floating, variable, linear or switching.

NOTE: Only the DIP-14 version (image) has the Vz pin, which is used for negative regulators. The Metal Can and the Flat-Pack do not have enough pins so exclude the Vz.

Retrieved from "http://www.opencircuits.com/index.php?title=Integrated_Circuits&oldid=12249"