LINEAR TECHNOLOGY LTC2607 Demonstration Circuit16-BIT Dual Rail-To-Rail DAC ene-I2C Interface User Guide
INKCAZO
Umboniso wesekethe ye-934 ubonisa i-LTC2607 kabini ye-16-bit DAC. Esi sixhobo siseka ibhentshi entsha yoxinaniso lwebhodi ye-16-bit ye-DACs kunye nokuqhubela phambili imigangatho yokusebenza yedrive ephumayo, ukulawulwa komthwalo, kunye ne-crosstalk kubonelelo olulodwa, umthamo.tagIiDAC ze-e-mveliso. I-DC934 ineempawu ezininzi zokuvavanya ukusebenza kwe-LTC2607. I-Onboard 5 volt, 4.096 volt, kunye ne-2.5 volt izikhombisi ezichanekileyo zibonelelwa, kwaye i-LTC2607 inokunikwa amandla nge-5 ye-volt reference yokuvavanya ukusebenza kukaloliwe ukuya kumzila. Olunye uphawu lwale bhodi yi-onboard LTC2422 0-bit ADC yokubeka iliso kwi-DAC output vol.tage. Impazamo ye-16ppm iyonke yesi sixhobo yanele ukuthatha imilinganiselo enentsingiselo yeeparamitha ezahlukeneyo ze-LTC2607.
Yila files kule bhodi yesekethe ziyafumaneka. Fowunela umzi-mveliso we-LTC. I-LTC luphawu lwentengiso lwe-Linear Technology Corporation.
Umzobo 1. Ukusekwa kweZixhobo zoMlinganiso oLungileyo
| I-PARAMETER | IMEKO | VALUE |
| Isigqibo | 16 IZIQULATHO | |
| I-Monotonicity | Vcc = 5V, Vref = 4.096V | 16 IZIQULATHO |
| Umahluko Nonlinearity | Vcc = 5V, Vref = 4.096V | +/-1 LSB |
| I-Integral Nonlinearity | Vcc = 5V, Vref = 4.096V | +/-19 LSB Eqhelekileyo |
| Ulawulo Lomthwalo | Vcc = Vref = 5V, Midscale
Iout = +/- 15 mA |
2 LSB/ma Max |
| DC Crosstalk | Ngenxa yokulayisha utshintsho lwangoku nakweliphi na elinye ijelo | 3 µV/mA |
INKQUBO YOKUQALA NGOKUKHAWULEZA
Qhagamshela i-DC934 kwi-DC590 ye-USB yesilawuli sothotho usebenzisa intambo yeribhoni yomqhubi we-14. Qhagamshela i-DC590 kwi-PC yomkhosi ngentambo eqhelekileyo ye-USB A/B. Qalisa isoftware yovavanyo enikezelweyo
I-DC590 okanye uyikhuphele kwi-www.linear.com. Iphaneli yolawulo echanekileyo iya kulayishwa ngokuzenzekelayo.
Cofa iqhosha elithi QOQA ukuze uqalise ukukhupha iikhowudi kwi-DAC kwaye ufunde emva kwesiphumo somthamotage.
Uxwebhu olupheleleyo lwesoftwe luyafumaneka kwinqaku lemenyu yoNcedo, njengoko iimpawu zinokongezwa ngamaxesha athile.
UKUSETYENZISWA KWE-HARDWARE
IJUMPERS
JP1 – Vref Khetha. Khetha i-5 volt, 4.096 volt, okanye ireferensi ye-2.5 volt. Ukusebenzisa ireferensi yangaphandle ngeVref Turret, susa le jumper.
JP2 – Vcc khetha. I-Vcc ithathwa kwibhodi ye-5 ye-volt reference okanye i-5 ye-volt elawulwayo yobonelelo kwibhodi yokulawula. Ukukhetha ireferensi ye-volt ezi-5 ze-VCC kunye ne-Vref kuvumela ukubonakaliswa komzila kaloliwe wokusebenza kwe-LTC2607.
JP3 – ADC Khubaza. Misela ukuba ON ukusebenza kunye DC590 isilawuli serial. Xa usebenzisa kwisicelo sokugqibela somthengi, i-ADC inokuvalwa ngokupheleleyo ngokuseta ijumper ku-DISABLE.
Kwimilinganiselo yengxolo enovakalelo kakhulu xa usebenzisa isoftware ebonelelwa nge-LTC, seta umthamo wemvelisotage kwaye uyeke ukufunda voltage ngokusebenzisa iqhosha lokuqokelela kwiqela lolawulo.
JP5 – Uqhagamshelo lweREFLO – nokuba lusekelwe okanye lubonelelwe ngaphandle. Jonga kwi-LTC2607 yeenkcukacha ze-REFLO.
JP4,6,7 - I2C ukhetho lwedilesi. Ezi ziqhagamshelwe kwizikhonkwane ze-CA0, CA1, CA2. Idemo yesoftwe isebenzisa idilesi ye-I2C yehlabathi, ke ezi zikhonkwane azinasiphumo xa zisetyenziswa kunye neSoftware ye-QuickEval. Zingasetyenziswa kwiprototyping ukuseta i
Idilesi ye-I2C ye-LTC2607 – bhekisa kugcino-lwazi lokwenza imephu yamanqanaba e-CA0,1,2 kwiidilesi ze-I2C.
I-ANALOG Connections
IVOTA, VOUTB – LTC2607 Iziphumo
I-Vref – I-Vref turret iqhagamshelwe ngokuthe ngqo kwii-terminal ze-LTC2607 kunye ne-LTC2422 ADC. Xa kusetyenziswa enye yeembekiselo ezisebhodini, ireferensi voltage inokubekwa iliso kweli nqanaba. Isalathiso sangaphandle sinokuthi sisetyenziswe kule turret emva kokususa iJP1.
UKUGQIBELA KUNYE NEENXIBELELO ZAMANDLA
Amandla (Vcc) - Ngokuqhelekileyo i-DC934 inikwe amandla ngumlawuli we-DC590. I-Vcc inokubonelelwa kule turret, nangona kunjalo umbane okwi-DC590 kufuneka ucinywe! Jonga kwi-DC590 Quick Start Guide ngeenkcukacha ezithe vetshe kule ndlela yokusebenza. Ukubeka phantsi – Amandla awohlukeneyo kunye nemihlaba yomqondiso inikezelwe. Nayiphi na imisinga emikhulu evela kwiziphumo zeDAC kufuneka ibuyiselwe kumhlaba wombane. Kwakhona, ukuba umbane wangaphandle uqhagamshelwe, umhlaba wombane kufuneka usetyenziswe. Umhlaba obonisa umqondiso uqhagamshelwe kwiinqwelomoya ezisezantsi eziveziweyo kumphezulu nasezantsi kwincam yebhodi, nakwiziphendu ezimbini ezibhalwe "Gnd." Sebenzisa umhlaba womqondiso njengendawo yereferensi yemilinganiselo kunye noqhagamshelo kwiisekethe zangaphandle.
UVAVANYO
Le mifuniselo ilandelayo yenzelwe ukubonisa ezinye zeempawu ezibalaseleyo ze-LTC2607. Zonke zinokwenziwa kusetyenziswa i-onboard LTC2422 ukubeka iliso kwi-DAC output voltage. Imveliso ebonisiweyo voltage uya kuvumelana ngokwesiqhelo ne HP3458A voltmeter ukuya 5 amanani. Ukuba iDAC iya kuzika okanye ifumane umsinga obalulekileyo, ngoko ke isiphumo somthamotage kufuneka ilinganiswe kufutshane neDAC kangangoko.
Uninzi lweenkcukacha zephepha ledatha zisebenzisa ireferensi ye-4.096 volt, ke le yireferensi ekhethwayo yokusetyenziswa kwezi mifuniselo. Ukusebenzisa umlawuli we-volt ezi-5 njengomthombo we-Vcc unomda wokuba i-Vcc ibe ngaphantsi kancinane kune-Vref, enokuthi ichaphazele impazamo yesikali esipheleleyo. Ukukhetha ireferensi ye-volt ezi-5 njengomthombo we-Vcc kuyoyisa oku, nangona kunjalo itotali yangoku enokufumaneka kwi-LTC2601 iya kulinganiselwa malunga ne-5mA.
PHAWULA: Ukusebenzisa unikezelo lwamandla lwangaphandle kuyacetyiswa kakhulu kule mifuniselo, ngakumbi leyo itsala umsa obalulekileyo. Jonga kwi-DC590 isikhokelo sokuqalisa ngokukhawuleza ngeenkcukacha.
ISIGQIBO
I-onboard LTC2422 ADC inesisombululo segalelo se-6mV. Oku kuya kusombulula ngokulula i-1 LSB (76mV ye-Vref=5V, 62.5mV ye-Vref=4.096V) utshintsho kwimveliso ye-LTC2607. Seta imveliso yeDAC ibe yivoltage kufutshane Midscale. Khetha i FINE isilayida kwiqela lolawulo nge mouse kwaye usebenzise utolo lwasekunene nasekhohlo ukunyathela imveliso nge-LSB enye. Utshintsho kufuneka lubonakale ngokucacileyo kwigrafu yokuphuma. (Kusenokuba yimfuneko ukulinda ukuba igrafu icace ukuba inyathelo elikhulu lisandula ukwenzeka.)
OKUNGQUMELEKILEYO
Umlinganiselo orhabaxa we-INL unokuthatyathwa kusetyenziswa i-ADC ekwibhodi. Ukulinganisa enye yeziphumo ze-LTC2607 kwikhowudi ye-256 kunye ne-65,535 kwaye ubale i-slope kunye ne-intercept usebenzisa i-spreadsheet. Okulandelayo, thatha ufundo oluninzi kumanqaku aphakathi. Ufundo akufuneki luphambuke kumgca obaliweyo ngaphezu kwe-64 LSBs, kwaye ngokuqhelekileyo ziya kuba ngaphakathi kwe-12 LSBs.
ULAWULO LOMTHETHO / IMPEDANCE YOKUPHUMA KWE-DC
Khetha "5V REG" kumthombo weVcc. Misela enye yeziphumo kwiMidscale (ikhowudi 32768). Umthombo okanye usike i-15 mA ukusuka kwenye yeziphumo zeDAC ngokuyitsalela kumhlaba wamandla okanye iVcc enexabiso elichasayo elifanelekileyo. UmqulutagUtshintsho kufuneka lube ngaphantsi kwe-2.25mV, ehambelana ne-impedance ye-0.15L. Ukuphazamiseka kwemveliso kuqhelekile ukuba ngaphantsi kwe-0.030L. (ukulinganisa iDAC voltage kwiphini yokukhupha ukuba usebenzisa i-voltmeter.)
ZERO ISIKALI ERROR
Misela enye yeeDACs kwikhowudi 0. Isiphumo esilinganisiweyo kufuneka sibe ngaphantsi kwe-9mV kwaye siya kuba ngaphantsi kwe-1mV.
IMPATHA YOLAWULO
Seta enye yeeDACs kwikhowudi 256. Isiphumo somthamotage kufuneka ibe ngaphakathi kwe-9mV yexabiso elichanekileyo, okanye iVref x 256/65535.
FUMANA Imposiso
Misela enye yeeDACs kwikhowudi 65,535. Imveliso yombane kufuneka ibe phakathi kwe-0.7% ye-Vref, kwaye iya kuba phakathi kwe-0.2%.
DC CROSSTALK
Misela enye yeeDACs kuMda ophakathi. Qhagamshela i-250 ohm resistor ukusuka kwimveliso ukuya kwi-Vcc okanye kwi-Power Ground (ukutshona okanye umthombo we-10mA, ngokulandelelana, xa kusetyenziswa i-reference ye-5V.) Esinye isiphumo akufanele sitshintshe ngaphezu kwe-3.5mV nge-milli nganye.amp yomthwalo wangoku.
Funda ngakumbi ngale ncwadana & Khuphela iPDF:
Amaxwebhu / Izibonelelo
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I-LINEAR TECHNOLOGY LTC2607 iSekethe yokuBonisa16-BIT kaloliwe ombini ukuya kuloliwe iDAC ene-I2C Interface [pdf] Isikhokelo somsebenzisi I-LTC2607, i-Demonstration Circuit 16-BIT Dual Rail-To-Rail DAC ene-I2C Interface, LTC2607 Isekethe yokuBonisa i-16-BIT Dual Rail-To-Rail DAC kunye ne-I2C Interface, iSekethe 16-BIT Dual Rail-To-Rail Interface ye-I2C ye-DAC I-16-BIT Dual Rail-To-Rail DAC ene-I2C Interface, Rail-To-Rail Interface ye-DAC ene-I2C Interface, iDAC ene-I2C Interface |
