I-AD7760BSVZ IC ADC 24BIT SIGMA-DELTA 64TQFP

Incazelo

I-AD7760 iwukusebenza okuphezulu, i-24-bit Σ-Δ i-analog-to-digital converter (ADC).Ihlanganisa umkhawulokudonsa obanzi wokufakwayo kanye nesivinini esiphezulu nezinzuzo zokuguqulwa kwe-Σ-Δ ukuze kuzuzwe ukusebenza kwe-100 dB SNR ku-2.5 MSPS, okuyenza ilungele ukutholwa kwedatha yesivinini esikhulu.Ububanzi obubanzi obuguquguqukayo buhlanganiswe nezimfuneko ezincishiswe kakhulu zokunqanda ukudayiswa kwenza inqubo yokuklama ibe lula.Ibhafa ehlanganisiwe yokushayela ireferensi, isikhulisi esihlukanisayo sokugcina isignali kumthamo kanye nokuguqulwa kwezinga, ifulegi elibanzi, amarejista enzuzo yangaphakathi kanye ne-offset, kanye nesihlungi se-FIR yedijithali enephasi eliphansi zenza i-AD7760 ibe idivayisi yokutholwa kwedatha ehlangene, edidiyelwe kakhulu edinga umngcele omncane. ukukhethwa kwengxenye.Ngaphezu kwalokho, idivayisi inikezela ngezilinganiso zokuncishiswa ezihlelekayo, futhi isihlungi sedijithali se-FIR singalungiswa uma izici ezizenzakalelayo zingalulungele uhlelo lokusebenza.I-AD7760 ilungele izinhlelo zokusebenza ezifuna i-SNR ephezulu ngaphandle komklamo oyinkimbinkimbi wokucubungula isignali yangaphambili.Okokufaka okuhlukile kuthathwe isampula kufika ku-40 MSPS yimoduli ye-analog.Okukhiphayo kwemoduli kucutshungulwa uchungechunge lwezihlungi ze-lowpass, nesihlungi sokugcina esinama-coefficients azenzakalelayo noma ahlelwa umsebenzisi.Izinga lesampula, amafrikhwensi ekhona lokuhlunga, nezinga lamagama okukhiphayo kusethwa inhlanganisela yefrikhwensi yewashi yangaphandle kanye namarejista okumisa e-AD7760.I-voltage eyireferensi enikezwe i-AD7760 inquma ububanzi bokufaka kwe-analog.Ngereferensi engu-4 V, ububanzi bokufaka kwe-analog bungu-±3.2 V ukuchema okuhlukile eduze kwemodi evamile engu-2 V. Lokhu kuchema kwemodi evamile kungafinyelelwa kusetshenziswa i-on-chip differential amplifier, kuqhubeke nokunciphisa izidingo zesignali yangaphandle.I-AD7760 iyatholakala ku-paddle eveziwe, i-TQFP ehamba phambili engu-64 futhi icaciswe phezu kwebanga lokushisa lezimboni ukusuka ku-−40°C kuya ku-+85°C.