8-Channel AD
Imodyuli yokuFumana
I-AN706
Incwadi yokusebenzisa
Icandelo 1: I-8-Channel AD Acquisition modules Parameters
- Imodyuli yeVPN: AN706
- AD Chip: AD7606
- Umjelo: i-8-channel
- AD bits: 16-bit
- UMax Sample Ixabiso: 200KSPS
- Igalelo Voltage Ireyithi: -5V ~ + 5V
- Iimaleko ze-PCB zeModyuli: I-4-Layer, umaleko wamandla ozimeleyo kunye nomaleko we-GND
- Ujongano lweModyuli: I-40-pin 0.1 intshi yesithuba esisentloko yabasetyhini, isikhokelo sokhuphelo
- Ubushushu be-Ambient (ngamandla asetyenziswayo: -40 ° ~ 85 °, zonke iitshiphusi ezikwimodyuli ukuhlangabezana neemfuno zoshishino
- Ujongano lwegalelo: I-8 SMA ujongano kunye ne-16-pin iiheader ezine-2.54 pitch (I-Pin Itshaneli nganye inePini ezimbini ezilungileyo nezingalunganga)
- Ukuchaneka komlinganiselo: Ngaphakathi kwe-0.5mV
Icandelo 2: Ubume bemodyuli
Umzobo 2-1: Isakhiwo semodyuli ye-AD ye-8-channel
Icandelo 3: AD7606 Chip Intshayelelo
I-AD76061 yi-16-bit, ngaxeshanye sampling, iinkqubo zokufumana idatha ye-analog-to-digital (DAS) enesibhozo, emithandathu, kunye nemijelo emine ngokulandelelanayo. Icandelo ngalinye liqulethe igalelo le-analog clamp ukhuseleko, isihluzo somyalelo wesibini esichasene ne-antialiasing, umkhondo kunye nokubamba ampi-lifier, i-16-bit yentlawulo yonikezelo ngokutsha olulandelelanayo olusondeleyo lwe-analog-to-digital converter (ADC), isihluzo sedijithali esiguquguqukayo, ireferensi ye-2.5 V kunye nereferensi.
Igalelo clamp i-circuitry yokukhusela inokunyamezela i-voltages ukuya kuthi ga kwi-±16.5 V. I-AD7606/AD7606-6/AD7606-4 isebenza ukusuka kunikezelo olulodwa lwe-5 V kwaye inokwamkela i-±10 V kunye ne-±5 V yokwenyani yemiqondiso ye-bipolar ngelixa i-sampi-ling kumazinga okugqiba ukuya kuma-200 kSPS kuwo onke amajelo. Igalelo clamp i-circuitry yokukhusela inokunyamezela i-voltagukuya kuthi ga kwi-±16.5 V.
I-AD7606 ine-1 MΩ igalelo le-analog impedance nokuba yeyiphi naampLing frequency. Umsebenzi omnye wokubonelela, ukuhluzwa kwe-chip, kunye ne-impedance ephezulu yokufaka isusa imfuno yomqhubi we-op amps kunye nonikezelo lwe-bipolar lwangaphandle.
I-AD7606/AD7606-6/AD7606-4 isihluzi esichasene ne-antialiasing ine-3 dB cutoff frequency ye-22 kHz kwaye ibonelela nge-40 dB yokulahlwa kwe-antialias xa samphlala ku-200 kSPS.
Isihluzo sedijithali esiguquguqukayo siqhutywa ngephini, sivelisa ukuphuculwa kwe-SNR, kwaye sinciphisa i-3 dB bandwidth.
Icandelo 4: AD7606 Chip Block Functional Diagram
Umzobo 4-1: AD7606 Umzobo weBloko eSebenzayo
Icandelo 5: AD7606 Chip Timing Specification
Umzobo5-1: AD7606 Imizobo yeXesha
I-AD7606 ivumela ngaxeshanye sampi-ling yazo zosibhozo iitshaneli ze-analog.
Onke amajelo azi-sampikhokelwa ngaxeshanye xa zombini izikhonkwane ze-CONVST (CONVST A, CONVST B) zibotshelelwe kunye. Umqondiso omnye we-CONVST usetyenziswa ukulawula zombini igalelo le-CONVST x. Umda onyukayo wesi sibonakaliso se-CONVST esiqhelekileyo siqalisa ngaxeshanye sampling kuwo onke amajelo e-analog (V1 ukuya kwi-V8).
I-AD7606 iqulethe i-oscillator ye-chip esetyenziselwa ukwenza ukuguqulwa. Ixesha lokuguqulwa kwawo onke amajelo e-ADC yi-tCONV. Umqondiso we-BUSY ubonisa kumsebenzisi xa ukuguqulwa kuqhubeka, ngoko ke xa umgca wokunyuka we-CONVST usetyenziswa, i-BUSY iya kwi-logic ephezulu kwaye iinguqu eziphantsi ekupheleni kwayo yonke inkqubo yokuguqulwa. Umda wokuwa we-BUSY umqondiso usetyenziselwa ukubeka zonke ezisibhozo umkhondo kunye nokubamba ampiilifi zibuyele kwimowudi yengoma. Umda owelayo we-BUSY ubonisa ukuba idatha entsha ngoku inokufundwa kwi-parallel bus (DB [15:0]), i-DOUTA kunye ne-DOUTB imigca yedatha yedatha, okanye i-byte bus parallel, DB [7:0].
Icandelo 6: AD7606 Chip Pin Configuration
Kwimodyuli ye-AN706 ye-8-channel AD yemodyuli yesekethe yoyilo lwesekethe, siseta imowudi yokusebenza ye-AD7606 ngokongeza ukutsalwa okanye ukutsala-phantsi izixhasi kwizikhonkwane zoqwalaselo ezintathu ze-AD7606.
- I-AD7606 ixhasa igalelo lereferensi yangaphandle okanye ireferensi yangaphakathi. Ukuba ireferensi yangaphandle isetyenzisiwe, i-REFIN/REFOUT ye-chip ifuna ireferensi ye-2.5V yangaphandle. Ukuba usebenzisa ireferensi yangaphakathi voltage. I-REFIN/REFOUT pin yireferensi yangaphakathi ye-2.5V. I-REF KHETHA ipini isetyenziselwa ukukhetha ireferensi yangaphakathi okanye ireferensi yangaphandle. Kule modyuli, ngenxa yokuba ukuchaneka kwereferensi yangaphakathi voltagI-e ye-AD7606 nayo iphezulu kakhulu (2.49V ~ 2.505V), uyilo lwesekethe lukhetha ukusebenzisa i-volume yereferensi yangaphakathi.tage.
Phina Igama Misela inqanaba Inkcazo I-REF KHETHA Umgangato ophezulu Sebenzisa ireferensi yangaphakathi voltagI-2.5V - I-AD7606 ye-AD yokufumana idatha yokuguqulwa inokuba kwimo ehambelanayo okanye imo ye-serial. Umsebenzisi unokuseta imo yonxibelelwano ngokucwangcisa inqanaba lepin ye-PAR/SER/BYTE SEL. kuyilo lwemodyuli ye-AN706, khetha imo ehambelanayo yokufunda idatha ye-AD ye-AD7606
Phina Igama Misela inqanaba Inkcazo PAR/SER/BYTE SEL Inqanaba eliphantsi Khetha ujongano oluhambelanayo - I-RANGE pin isetyenziselwa ukukhetha nokuba yi-±10 V okanye ±5 V njengoluhlu lwegalelo kwi-AD9767. Kuluhlu lwe-±5 V, 1LSB=152.58uV. Kuluhlu lwe-±10 V, 1LSB=305.175 UV. Kuyilo lwesekethe yemodyuli ye-AN706, khetha i-± 5V analog voltagUluhlu lwegalelo
Phina Igama Misela inqanaba Inkcazo Ukutshintsha Inqanaba eliphantsi Ukukhetha uluhlu lwegalelo lophawu lwe-analog: ± 5V - I-AD7606 iqulathe isihluzo esizikhethelayo sedijithali se-first-odolo ye-sinc ekufuneka isetyenziswe kwizicelo apho kusetyenziswa amazinga acothayo okuphumelela okanye apho umlinganiselo ophezulu wesignali ukuya kwingxolo okanye uluhlu oluguquguqukayo luyanqweneleka. Ii-oversampling ratio yesihluzo sedijithali silawulwa kusetyenziswa ii-oversampling pins, OS [2:0] (bona iTheyibhile engezantsi). I-OS 2 yi-MSB bit yolawulo, kwaye i-OS 0 yi-LSB bit yokulawula. Itheyibhile engezantsi ibonelela ngee-oversampi-ling bit decoding ukukhetha ii-overs ezahlukeneyoample rates. Izikhonkwane ze-OS zifakwe kumda owelayo we-BUSY.
Kuyilo lwezixhobo zemodyuli ye-AN706, i-OS[2:0] ikhokelela kujongano lwangaphandle, kwaye iFPGA okanye iCPU ingakhetha ukuba isebenzise isihluzo ngokulawula inqanaba lephini le-OS[2:0] ukufezekisa ukuchaneka komlinganiselo ophezulu. .
Icandelo 7: AD7606 Chip ADC TRANSFER UMSEBENZI
Imveliso yekhowudi ye-AD7606 ihambelana nesibini. Utshintsho lwekhowudi oluyiliweyo lwenzeka phakathi phakathi kwamaxabiso alandelelanayo e-LSB, oko kukuthi, 1/2 LSB kunye ne-3/2 LSB. Ubungakanani beLSB yiFSR/65,536 yeAD7606. Uphawu olufanelekileyo lokudluliselwa kwe-AD7606 luboniswe kuMfanekiso 7-1.
Icandelo 8: Inkcazo yoMjongano (Iphini elinombhalo kwi-PCB nguphini 1)
| Iphini | Igama loMqondiso | Inkcazo | Iphini | Igama loMqondiso | Inkcazo |
| 1 | GND | Umhlaba | 2 | VCC | +5V |
| 3 | OS1 | overampling Khetha |
4 | OS0 | overampling Khetha |
| 5 | ICONVSTAB | Ukuguqulwa kwedatha | 6 | OS2 | overampling Khetha |
| 7 | RD | Funda | 8 | SETSHENZISWA KHONA | Lungisa kwakhona |
| 9 | NDIXAKEKILE | Ndixakekile | 10 | CS | Chip Khetha |
| 11 | 12 | FIRSTDATA | Idatha yokuqala | ||
| 13 | 14 | ||||
| 15 | DB0 | AD Data Bus | 16 | DB1 | AD Data Bus |
| 17 | DB2 | AD Data Bus | 18 | DB3 | AD Data Bus |
| 19 | DB4 | AD Data Bus | 20 | DB5 | AD Data Bus |
| 21 | DB6 | AD Data Bus | 22 | DB7 | AD Data Bus |
| 23 | DB8 | AD Data Bus | 24 | DB9 | AD Data Bus |
| 25 | DB10 | AD Data Bus | 26 | DB11 | AD Data Bus |
Icandelo 9: AN706 Imodyuli yoMfuniselo inkqubo
- Okokuqala, qhagamshela imodyuli ye-AN706 kwi-port ye-34-pin yokwandisa umgangatho weBhodi yoPhuhliso lwe-ALINX FPGA (Xa kunokwenzeka ukuba ibhodi yophuhliso inikwe amandla).
- Qhagamshela umthombo wakho womqondiso kwi-AN706 igalelo lokudibanisa iModyuli (Qaphela: Uluhlu lwegalelo lezibuko le-AD: -5V~+5V).
- Khuphela inkqubo kwiFPGA usebenzisa iQuartus II okanye isoftware yeISE (ukuba ufuna iinkqubo zovavanyo, thumela i-imeyile rachel.zhou@alinx.com.cn).
- Vula isixhobo somncedisi we-serial debugging kwaye usete izinga lonxibelelwano lwe-serial port ngokulandelayo
Umzobo 9-1: Isixhobo soMncedisi weSerial Debugging - IVoltagIxabiso le-e ye-8-channel igalelo lomqondiso wemodyuli ye-AN706 iya kubonakala kunxibelelwano lwe-serial. (Ngenxa yokuba idatha ye-8-way iboniswe kumgca omnye kwi-serial debugging assistant, kufuneka sandise i-interface.)
Umzobo 9-2: Unxibelelwano lweSerial
Idatha engentla i-8 iziteshi zedatha ngaphandle kokufakwa kwesignali, kuba igalelo lesignali ye-AD likwimeko ejikelezayo, kwaye idatha ye-AD yokuguqulwa kwedatha malunga ne-1.75V.
Example: Ukuba uqhagamshela igalelo letshaneli 1 kunye ne-3.3V yephini yovavanyo kwimodyuli ye-AN706 enomgca weDuPont ukuvavanya ivolthitage ye 3.3V kwimodyuli.
Umzobo 9-3: I-Channel 1 kunye ne-3.3V yepini yokuvavanya
Ngeli xesha, idatha yokulinganisa ye-AD1 eboniswe kwi-interface ye-serial imalunga +3.3074.
Umzobo 9-4: Iphini yovavanyo voltage bonisa kwi-serial interface
Icandelo 10: Ukuchaneka koMlinganiselo weModyuli AN706
Ngokulinganisa umthamo osetyenziswayotage kunye ne-voltmeter ephezulu echanekileyo, ukuchaneka kokulinganisa kwemodyuli ye-AD706 ingaphakathi kwe-0.5mV ngaphakathi kwe-5V ukuya ku-5V vol.tage igalelo uluhlu.
Le theyibhile ilandelayo ibonisa iziphumo zetshaneli ezisibhozo ze-analog ezine voltages. Ikholamu yokuqala yidatha elinganiswe yi-multimeter yedijithali echanekileyo, kwaye iikholomu ezisibhozo zokugqibela ziziphumo zemodyuli ye-AD yokulinganisa imodyuli ye-AD.
Uluhlu 10-1: Uvavanyo Voltage
Kule ndlela yokuvavanya, i-oversampi-ling override yenza icebo lokucoca ulwelo alisetyenziswanga ukuphucula ubunyani bemodyuli ye AN706. Kubasebenzisi abafuna ngakumbi ukuphucula ukuchaneka kwesampling kunye ne-sampisantya se-ling asiphezulu, singasetwa kudweliso lwenkqubo. Indlela kasampUkwandiswa kweling, unokuseta ii-oversampling ratio kudweliso lwenkqubo.
Icandelo 11: AN706 inkcazo yenkqubo yovavanyo lwemodyuli
Oku kulandelayo yinkcazo emfutshane yeengcamango zenkqubo nganye yovavanyo lweVerilog, kwaye abasebenzisi banokubhekisela kwinkcazo yenqaku kwikhowudi.
- Inkqubo yenqanaba eliphezulu: ad706_test.v
Chaza iimodyuli zeFPGA kunye ne-AN706 kunye ne-serial port ukufumana kunye nokuthumela igalelo lomqondiso kunye nemveliso, kwaye uqinisekise ii-subroutines ezintathu (ad7606.v, volt_cal.v kunye ne-uart.v). - Inkqubo yokufumana idatha ye-AD: ad7606.v
Ngokutsho kwexesha le-AD7606, i-sample 16 imiqondiso analog AD iguqulelwe data bit-16. Inkqubo yokuqala ithumela uphawu lwe-CONVSTAB kwi-AD7606 ukuqala ukuguqulwa kwedatha ye-AD, kwaye ilindele ukuba i-Busy signal ihambe phantsi ukuze ifunde idatha ye-AD channel 1 ukuya kwi-channel 16 ngokulandelelana.
AD Voltage Uguqulo (1 LSB)=5V/ 32758=0.15 mV
- UmqulutagInkqubo yokuguqulwa kwedatha ye-AD: volt_cal.v Inkqubo iguqula i-16-bit yedatha eqokelelwe kwi-ad7606.v, Bit[15] ibe yimiqondiso elungileyo kunye nengalunganga, kwaye iBit[14:0] iyiguqule kuqala ibe yivoltage ixabiso ngale fomyula ilandelayo, kwaye emva koko iguqula i-hexadecimal voltagIxabiso kwikhowudi yeBCD enamanani angama-20.
- Uthotho lwenkqubo yokuthumela izibuko: uart.v Ixesha lithumela iitshaneli ezisi-8 zevoltage data kwiPC ngokusebenzisa uart. Iwotshi yothumelo yeserial port ifunyenwe ngokwahlula frequency nge-50Mhz, kwaye ireyithi ye-baud yi-9600bps.
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I-ALINX AN706 Ngaxeshanye Sampling Multi-Channels 16-Bits AD Module [pdf] Incwadi yokusebenzisa I-AN706 Ngaxeshanye Sampling Multi-Channels 16-Bits AD Imodyuli, AN706, ngaxeshanye Sampling Imijelo emininzi ye-16-Bits AD Imodyuli, Sampling Multi-Channels 16-Bits AD Module, Multi-Channels 16-Bits AD Module, 16-Bits AD Module, AD Module, Module |