LINEAR TECHNOLOGY LTC2607 Demonstration Circuit16-BIT Dual Rail-To-Rail DAC with I2C Interface User Guide
TLHALOSO
Pontšo ea potoloho ea 934 e na le LTC2607 e habeli ea 16-bit DAC. Sesebelisoa sena se theha benchmark e ncha ea boarddensity bakeng sa 16-bit DACs le ho ntlafatsa maemo a ts'ebetso bakeng sa drive drive, taolo ea mojaro, le crosstalk ka phepelo e le 'ngoe, vol.tagE-output DACs. DC934 e na le likarolo tse ngata tsa ho lekola ts'ebetso ea LTC2607. Onboard 5 volt, 4.096 volt, le 2.5 volt litšupiso tse nepahetseng li fanoe, 'me LTC2607 e ka tsamaisoa ke 5 volt reference bakeng sa ho hlahloba ts'ebetso ea terene ho ea ho seporo. Karolo e 'ngoe ea boto ena ke onboard LTC2422 0-bit ADC bakeng sa ho lekola tlhahiso ea DAC.tage. Phoso e felletseng ea 16ppm ea sesebelisoa sena e lekane ho nka litekanyo tse utloahalang tsa li-parameter tse fapaneng tsa LTC2607.
Moralo files bakeng sa boto ena ea potoloho lia fumaneha. Letsetsa feme ea LTC. LTC ke lets'oao la khoebo la Linear Technology Corporation.
Setšoantšo sa 1. Tlhophiso e nepahetseng ea Lisebelisoa tsa Tekanyo
| PARAMETER | BOEMO | VALUE |
| Qeto | 16 LITŠOANE | |
| Monotonicity | Vcc = 5V, Vref = 4.096V | 16 LITŠOANE |
| Phapang Nonlinearity | Vcc = 5V, Vref = 4.096V | +/-1 LSB |
| Bonngoe bo sa lumellaneng | Vcc = 5V, Vref = 4.096V | +/-19 LSB Tloaelehileng |
| Laed Regulation | Vcc = Vref = 5V, Midscale
Iout = +/- 15 mA |
2 LSB/mA Max |
| DC Crosstalk | Ka lebaka la ho kenya phetoho ea hajoale mocha ofe kapa ofe o mong | 3µV/mA |
TSELA E QALANG HO QALA
Hokela DC934 ho DC590 USB serial controller u sebelisa thapo e fanoeng ea 14-conductor ribone. Hokela DC590 ho komporo e amohelang batho ka thapo e tloaelehileng ea USB A/B. Sebelisa software ea tlhahlobo e fanoeng
DC590 kapa e jarolle ho www.linear.com. Phanele e nepahetseng ea taolo e tla kengoa ka bo eona.
Tobetsa konopo ea COLLECT ho qala ho hlahisa likhoutu ho DAC le ho bala sephetho sa sephetho sa voltage.
Litokomane tse felletseng tsa software lia fumaneha ho tsoa ho Help menu, kaha likarolo li ka eketsoa nako le nako.
LIEKETSO HARDWARE
LITS'ELISITSOE
JP1 - Vref Khetha. Khetha 5 volt, 4.096 volt, kapa 2.5 volt reference. Ho sebelisa tšupiso ea kantle ka Vref Turret, tlosa jumper ena.
JP2 – Vcc khetha. Vcc e nkuoa ho tsoa ho boto ea 5 volt kapa phepelo e laoloang ea 5 volt ho tsoa ho boto ea taolo. Ho khetha li-volt tse 5 tsa VCC le Vref ho lumella ho khetholla ha seporo ho ea ho ts'ebetso ea terene ea LTC2607.
JP3 - ADC Disable. E behe ho ON bakeng sa ts'ebetso ka DC590 serial controller. Ha o sebelisa ts'ebelisong ea bareki, ADC e ka koaloa ka botlalo ka ho beha jumper ho DISABLE.
Bakeng sa litekanyo tsa lerata tse bobebe haholo ha o sebelisa software e fanoeng ke LTC, seta molumo oa molumotage le ho emisa ho bala voltage ka konopo ea ho bokella ho phanele ea taolo.
JP5 - Khokahano ea REFLO - e thehiloe kapa e fanoe ka ntle. Sheba lintlha tsa REFLO tsa LTC2607
JP4,6,7 - khetho ea aterese ea I2C. Tsena li hoketsoe ho CA0, CA1, CA2 Pins. Sesebelisoa sa demo se sebelisa aterese ea I2C ea lefats'e, kahoo lithakhisa tsena ha li na phello ha li sebelisoa le sesebelisoa sa QuickEval. Li ka sebelisoa ho prototyping ho seta
Aterese ea I2C ea LTC2607 - e lebisa ho database bakeng sa 'mapa oa maemo a CA0,1,2 ho liaterese tsa I2C.
MAKHOPO ANALOGE
VOUTA, VOUTB – LTC2607 Litholoana
Vref - Vref turret e hokahane ka kotloloho le liteishene tsa litšupiso tsa LTC2607 le LTC2422 ADC. Ha e 'ngoe ea litšupiso tse ka har'a board e ntse e sebelisoa, referense voltage ka behoa leihlo nakong ena. Tlhahiso ea kantle e ka boela ea sebelisoa ho turret ena ka mor'a ho tlosa JP1.
MAHALA LE MATLA A MATLA
Matla (Vcc) - Hangata DC934 e tsamaisoa ke molaoli oa DC590. Vcc e ka fanoa turret ena, leha ho le joalo phepelo ea motlakase ho DC590 e tlameha ho tima! Sheba ho DC590 Quick Start Guide bakeng sa lintlha tse ling mabapi le mokhoa ona oa ts'ebetso. Grounding - Matla a arohaneng le mabaka a matšoao a fanoa. Maqhubu afe kapa afe a maholo a tsoang ho DAC a lokela ho khutlisetsoa sebakeng sa motlakase. Hape, haeba phepelo ea motlakase e kantle e hokahantsoe, sebaka sa motlakase se lokela ho sebelisoa. Sebaka sa matšoao se hokahane le lifofane tse pepeneneng tse holimo le tse ka tlase tsa boto, le li-turrets tse peli tse ngotsoeng "Gnd." Sebelisa sebaka sa mats'oao e le moo u ka lebisang ho litekanyo le likhokahano le lipotoloho tse kantle.
LIEKETSENG LITEKO
Liteko tse latelang li reretsoe ho bonts'a tse ling tsa likarolo tse hlahelletseng tsa LTC2607. Tsohle li ka etsoa ho sebelisoa onboard LTC2422 ho lekola tlhahiso ea DAC voltage. Sehlahisoa se bonts'itsoeng voltage hangata e tla lumellana le voltmeter ea HP3458A ho isa ho linomoro tse 5. Haeba DAC e tla be e tebela kapa e batla motlakase o moholo, joale sephetho sa voltage lokela ho lekanyetsoa haufi le DAC kamoo ho ka khonehang.
Litlhaloso tse ngata tsa leqephe la data li sebelisa referense ea 4.096 volt, ka hona ena ke tšupiso e ratoang e ka sebelisoang bakeng sa liteko tsena. Ho sebelisa 5 volt regulator joalo ka mohloli oa Vcc ho na le moeli oa hore Vcc e ka ba tlase hanyane ho feta Vref, e ka amang phoso e felletseng ea sekala. Ho khetha 5 volt reference e le mohloli oa Vcc ho hlola sena, leha ho le joalo kakaretso ea hajoale eo LTC2601 e ka e fumanang e tla lekanyetsoa ho hoo e ka bang 5mA.
HLOKOMELA: Ho khothaletsoa ho sebelisa matla a kantle bakeng sa liteko tsena, haholo-holo tse hohelang matla a hona joale. Sheba tataiso e potlakileng ea DC590 bakeng sa lintlha.
TSIETSO
LTC2422 ADC e ka har'a sekepe e na le qeto e kenang ea 6mV. Sena se tla rarolla habonolo phetoho ea 1 LSB (76mV bakeng sa Vref=5V, 62.5mV bakeng sa Vref=4.096V) ho tlhahiso ea LTC2607. Beha tlhahiso ea DAC ho voltage haufi le Midscale. Kgetha selaete sa FINE phaneleng ya taolo ka toeba mme o sebedise dikonopo tse ka ho le letona le le letshehadi ho hata tlhahiso ka LSB e le nngwe. Phetoho e lokela ho bonahala ka ho hlaka ho kerafo ea tlhahiso. (Ho ka 'na ha hlokahala ho emela hore kerafo e hlake haeba mohato o moholo o sa tsoa etsahala.)
MOTHO E TS'OANELANG
Tekanyo e boima ea INL e ka nkuoa ho sebelisoa onboard ADC. Lekanya e 'ngoe ea liphetho tsa LTC2607 ho khoutu ea 256 le 65,535 'me u bale moepa le ho thibela ho sebelisa spreadsheet. Ka mor'a moo, bala tse 'maloa lintlheng tse bohareng. Lipalo ha lia lokela ho kheloha moleng o baloang ka li-LSB tse fetang 64, 'me hangata li tla ba ka har'a 12 LSBs.
MOLAO OA MOJALO / DC OUTPUT IMPEDANCE
Khetha "5V REG" bakeng sa mohloli oa Vcc. Beha e 'ngoe ea liphetho ho Midscale (khoutu 32768). Mohloli kapa tebela 15 mA ho tsoa ho e 'ngoe ea liphetho tsa DAC ka ho e hulela sebakeng sa motlakase kapa Vcc e nang le sehanyetsi se nepahetseng sa boleng. MolumotagPhetoho ea e e lokela ho ba ka tlase ho 2.25mV, e tsamaellanang le sephetho sa 0.15L. Ho thibela tlhahiso hangata ka tlase ho 0.030L. (lekanya DAC voltage pineng ea tlhahiso haeba u sebelisa voltmeter.)
ZERO SEKOLO PHOSO
Beha e 'ngoe ea li-DAC ho khoutu 0. Sephetho se lekantsoeng se lokela ho ba ka tlase ho 9mV 'me ka tloaelo se tla ba ka tlase ho 1mV.
HLOKOMELA PHOSO
Beha e 'ngoe ea li-DAC ho khoutu ea 256. The output voltage lokela ho ba ka hare ho 9mV ea boleng bo nepahetseng, kapa Vref x 256/65535.
FUMANANG PHOSO
Beha e 'ngoe ea li-DAC ho khouto 65,535. Phallo ea motlakase e lokela ho ba ka hare ho 0.7% ea Vref, 'me hangata e tla ba ka hare ho 0.2%.
DC MOKHOPO
Beha e 'ngoe ea li-DAC hore e be Midscale. Hokela 250 ohm resistor ho tloha tlhahiso ho Vcc kapa Power Ground (ho teba kapa mohloli oa 10mA, ka ho latellana, ha ho sebelisoa 5V refer-ence.) Ntho e 'ngoe ha ea lokela ho fetoha ka ho feta 3.5mV ka milli.amp ea mojaro cur- rent.
Bala haholoanyane ka Bukana ena & Khoasolla PDF:
Litokomane / Lisebelisoa
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LINEAR TECHNOLOGY LTC2607 Demonstration Circuit16-BIT Dual Rail-To-Rail DAC e nang le I2C Interface [pdf] Bukana ea Mosebelisi LTC2607, Demonstration Circuit 16-BIT Dual Rail-To-Rail DAC with I2C Interface, LTC2607 Demonstration Circuit 16-BIT Dual Rail-To-Rail DAC with I2C Interface, Circuit 16-BIT Dual Rail-To-Rail Interface ea I2C DAC 16-BIT Dual Rail-To-Rail DAC e nang le I2C Interface, Rail-To-Rail DAC e nang le I2C Interface, DAC e nang le I2C Interface |
