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I-Semicon Original Variety Electronics Components Best STC AVR 8254 Microcontroller MCU IC TL2844BDR-8 SOP

I-Semicon Original Variety Electronics Components Best STC AVR 8254 Microcontroller MCU IC TL2844BDR-8 SOP Isithombe Esifakiwe
  • I-Semicon Original Variety Electronics Components Best STC AVR 8254 Microcontroller MCU IC TL2844BDR-8 SOP

incazelo emfushane:

I-TL284xB kanye ne-TL384xB yochungechunge lwamasekhethi ahlanganisiwe okulawula ahlinzeka ngezici ezidingekayo ukuze kusetshenziswe izikimu zokulawula imodi yamanje engaxhunyiwe ku-inthanethi noma ye-dc-to-dc, enenani elincane lezingxenye zangaphandle.Amasekethe asetshenziswe ngaphakathi afaka ukukhiya ngaphandle kwe-voltage (UVLO) kanye nesithenjwa esinembayo esisikwa ukuze kube nokunemba kokokufaka kwe-amplifier yephutha.Eminye imijikelezo yangaphakathi ihlanganisa ukuqonda ukuze kuqinisekiswe ukusebenza okuxhumene, isiqhathaniso se-pulse-width modulation (PWM) esihlinzeka nokulawula umkhawulo wamanje, kanye nesiteji sokuphuma kwe-totem-pole esiklanyelwe ukukhipha noma ukucwilisa umthamo wamanje ophezulu.Isigaba sokuphumayo, esilungele ukushayela ama-MOSFET esiteshi se-N, siphansi uma ikwisimo esingekho.


Landa i-Datesheet

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Uchungechunge lwe-TL284xB ne-TL384xB amaphinikhodi ahambisana ne-TL284x ejwayelekile kanye ne-TL384x ngokuthuthukiswa okulandelayo.Amandla okuqalisa acaciswe ukuthi angu-0.5 mA (ubukhulu), kuyilapho i-oscillator discharge current isikwe yaba ngu-8.3 mA (uhlobo).Ngaphezu kwalokho, phakathi nezimo zokuvala i-undervoltage, okukhiphayo kune-voltage ephezulu yokugcwala engu-1.2 V ngenkathi kuzika i-10 mA (VCC = 5 V).Umehluko omkhulu phakathi kwamalungu alolu chungechunge ama-threshold e-UVLO kanye nebanga eliphezulu lomjikelezo wemisebenzi.Imikhawulo ejwayelekile ye-UVLO engu-16 V (ivuliwe) no-10 V (ivaliwe) kumadivayisi we-TLx842B kanye ne-TLx844B iwenza afaneleke ngokufanelekile ezinhlelweni zokusebenza ezingaxhunyiwe ku-inthanethi.Imikhawulo evamile ehambisanayo yamadivayisi we-TLx843B kanye ne-TLx845B ingu-8.4 V (ivuliwe) no-7.6 V (ivaliwe).Amadivayisi e-TLx842B kanye ne-TLx843B angasebenza emijikelezweni yomsebenzi esondela ku-100%.Ububanzi bomjikelezo wemisebenzi obungu-0% ukuya ku-50% butholwa yi-TLx844B ne-TLx845B ngokwengezwa kwe-flip-flop yangaphakathi, evala okukhiphayo kuwo wonke omunye umjikelezo wewashi. 40°C kuya ku-85°C.Amadivayisi ochungechunge lwe-TL384xB aphawulelwe ukusebenza kusuka ku-0°C kuya ku-70°C.

Izimfanelo Zomkhiqizo

UHLOBO

DESCRIPTION

Isigaba

Izifunda Ezihlanganisiwe (ICs)

Isixhumi esibonakalayo - CODECs

Mfr

Texas Instruments

Uchungechunge

-

Iphakheji

I-Tape & Reel (TR)

Cut Tape (CT)

I-Digi-Reel®

SPQ

250T&R

Isimo somkhiqizo

Iyasebenza

Uhlobo

Umsindo we-Stereo

Data Interface

I-PCM Audio Interface

Ukulungiswa (Amabhithi)

24 b

Inombolo yama-ADC/DACs

2/2

I-Sigma Delta

Yebo

I-S/N Ratio, ADCs / DACs (db) Uhlobo

92/102

I-Dynamic Range, ADCs / DACs (db) Uhlobo

93/97

I-Voltage - Supply, Analog

2.7V ~ 3.6V

I-Voltage - Supply, Digital

1.65V ~ 1.95V

Izinga Lokushisa Lokusebenza

-40°C ~ 85°C

Uhlobo Lokukhweza

INtaba Engaphezulu

Iphakheji / Ikesi

32-VFQFN Iphedi Eveziwe

Iphakheji Yedivayisi Yomhlinzeki

32-VQFN (5x5)

Inombolo Yomkhiqizo Eyisisekelo

I-TLV320

Isilawuli se-PWM

I-Pulse Width Modulation (PWM) ibhekisela ekusetshenzisweni kokuphumayo kwedijithali kwe-microprocessor ukulawula umjikelezo we-analog futhi kuyindlela yokufaka ikhodi ngedijithali izinga lesiginali ye-analog.Ukulawula amasekhethi e-analog ngedijithali kunganciphisa kakhulu izindleko namandla okusetshenziswa kwesistimu.Izilawuli ezincane eziningi ziqukethe izilawuli ze-PWM ngaphakathi kwazo.

Isimiso

Incazelo emfushane yomgomo wesilawuli se-PWM
Umgomo oyisisekelo wokulawula i-PWM usekelwe eqinisweni lokuthi ama-pulses amancane evolumu yomfutho elinganayo kanye nomumo ohlukile unomphumela ofanayo uma wengezwe kusixhumanisi esine-inetia.Kunezindlela ezahlukahlukene zokuhlukanisa ukuguquguquka kobubanzi be-pulse, okufana ne-unipolar ne-bipolar, i-synchronous ne-asynchronous, i-rectangular wave modulation, kanye ne-sine wave modulation.Indlela yokulawula ye-PWM ye-unipolar isho ukuthi igagasi elithwalayo liguqulwa kuphela ohlangothini olulodwa engxenyeni yomjikelezo, futhi i-waveform ye-PWM iphinde ishintshwe kuphela ohlangothini olulodwa, kuyilapho indlela yokulawula i-bipolar PWM ishintsha igagasi elithwalayo ngezindlela ezimbili engxenyeni yomjikelezo. , kanye ne-waveform ye-PWM nayo ishintshiwe ngezindlela ezimbili.Kuye ngokuthi isignali yenkampani yenethiwekhi ivunyelaniswe yini nesiginali yokumodela, ukulawula kwe-PWM kungahlukaniswa kube ukuguquguquka okuvumelanayo kanye nokuguquguquka okungavumelaniyo.Ukuguquguquka kobubanzi be-waveform ye-wave form kubonakala ngekholomu yobubanzi be-pulse okukhiphayo ukuba ububanzi obulinganayo, futhi kungalawula kuphela inani elithile lama-harmonics;I-Sine waveform pulse width modulation ibonakala ngekholomu yobubanzi be-pulse, hhayi ububanzi obulinganayo, ububanzi buyashintsha ngokomthetho we-sine, i-waveform ephumayo iseduze ne-sine waveform.I-Sine wave pulse wide modulation ibizwa nangokuthi i-SPWM.ukukhiqiza ububanzi be-pulse ngokusho kwesignali yokulawula kuyisihluthulelo sale nqubo.Indlela yokuqhathanisa ye-waveform engunxantathu, indlela yokuqhathanisa i-hysteresis loop, kanye nendlela ye-vector yesikhala se-voltage ivame ukusetshenziswa.

Izilawuli ze-PWM

Izilawuli ze-PWM zingabakhiqizi abaziwayo.
Ezidume kakhulu yiTexas Instruments, Motorola, Feifei Semiconductor, Unitrode, Micro Linear, Silicon General Semiconductor, Siemens, STMicroelectronics, kanye neRoyal Philips Semiconductors eNetherlands, njll.

Mayelana Nomkhiqizo

I-TL284xB kanye ne-TL384xB yochungechunge lwamasekhethi ahlanganisiwe okulawula ahlinzeka ngezici ezidingekayo ukuze kusetshenziswe izikimu zokulawula imodi yamanje engaxhunyiwe ku-inthanethi noma ye-dc-to-dc, enenani elincane lezingxenye zangaphandle.Amasekethe asetshenziswe ngaphakathi afaka ukukhiya ngaphandle kwe-voltage (UVLO) kanye nesithenjwa esinembayo esisikwa ukuze kube nokunemba kokokufaka kwe-amplifier yephutha.Eminye imijikelezo yangaphakathi ihlanganisa ukuqonda ukuze kuqinisekiswe ukusebenza okuxhumene, isiqhathaniso se-pulse-width modulation (PWM) esihlinzeka nokulawula umkhawulo wamanje, kanye nesiteji sokuphuma kwe-totem-pole esiklanyelwe ukukhipha noma ukucwilisa umthamo wamanje ophezulu.Isigaba sokuphumayo, esilungele ukushayela ama-MOSFET esiteshi se-N, siphansi uma ikwisimo esingekho.
Uchungechunge lwe-TL284xB ne-TL384xB amaphinikhodi ahambisana ne-TL284x ejwayelekile kanye ne-TL384x ngokuthuthukiswa okulandelayo.Amandla okuqalisa acaciswe ukuthi angu-0.5 mA (ubukhulu), kuyilapho i-oscillator discharge current isikwe yaba ngu-8.3 mA (uhlobo).Ngaphezu kwalokho, phakathi nezimo zokuvala i-undervoltage, okukhiphayo kune-voltage ephezulu yokugcwala engu-1.2 V ngenkathi kuzika i-10 mA (VCC = 5 V).
Umehluko omkhulu phakathi kwamalungu alolu chungechunge ama-threshold e-UVLO kanye nebanga eliphezulu lomjikelezo wemisebenzi.Imikhawulo ejwayelekile ye-UVLO engu-16 V (ivuliwe) no-10 V (ivaliwe) kumadivayisi we-TLx842B kanye ne-TLx844B iwenza afaneleke ngokufanelekile ezinhlelweni zokusebenza ezingaxhunyiwe ku-inthanethi.Imikhawulo evamile ehambisanayo yamadivayisi we-TLx843B kanye ne-TLx845B ingu-8.4 V (ivuliwe) no-7.6 V (ivaliwe).Amadivayisi e-TLx842B kanye ne-TLx843B angasebenza emijikelezweni yomsebenzi esondela ku-100%.Ububanzi bomjikelezo wemisebenzi obungu-0% ukuya ku-50% butholwa yi-TLx844B kanye ne-TLx845B ngokwengezwa kwe-flip-flop yangaphakathi, evala okukhiphayo kuwo wonke omunye umjikelezo wewashi. 40°C kuya ku-85°C.Amadivayisi ochungechunge lwe-TL384xB aphawulelwe ukusebenza kusuka ku-0°C kuya ku-70°C.

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