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

Kufotokozera mwachidule:

Tsatanetsatane wa Zamalonda

Zogulitsa Tags

Mndandanda wa TL284xB ndi TL384xB ndi pini yogwirizana ndi TL284x yokhazikika ndi TL384x ndikuwongolera zotsatirazi.Pakalipano poyambira amatchulidwa kuti ndi 0.5 mA (max), pamene oscillator discharge panopa amakonzedwa mpaka 8.3 mA (typ).Kuonjezera apo, panthawi yotseketsa zowonongeka, zotulutsazo zimakhala ndi mphamvu yowonjezereka ya 1.2 V pamene ikumira 10 mA (VCC = 5 V).Kusiyana kwakukulu pakati pa mamembala a mndandandawu ndi malire a UVLO ndi kuchuluka kwa ntchito.Mawonekedwe a UVLO a 16 V (pa) ndi 10 V (ozimitsa) pazida za TLx842B ndi TLx844B amawapangitsa kukhala oyenera kugwiritsa ntchito popanda intaneti.Mipata yofananira pazida za TLx843B ndi TLx845B ndi 8.4 V (on) ndi 7.6 V (yozimitsa).Zida za TLx842B ndi TLx843B zimatha kugwira ntchito mozungulira 100%.Magawo a 0% mpaka 50% amapezedwa ndi TLx844B ndi TLx845B powonjezera chosinthira chamkati, chomwe chimatseka zotuluka pa wotchi ina iliyonse. 40°C mpaka 85°C.Zida za TL384xB-zodziwika kuti zizigwira ntchito kuchokera ku 0 ° C mpaka 70 ° C.

Makhalidwe a Zamalonda

TYPE	DESCRIPTION
Gulu	Magawo Ophatikizana (ICs) Chiyankhulo - CODECs
Mfr	Texas Instruments
Mndandanda	-
Phukusi	Tape & Reel (TR) Dulani Tepi (CT) Digi-Reel®
SPQ	250T&R
Mkhalidwe wa Zamalonda	Yogwira
Mtundu	Nyimbo za Stereo
Data Interface	PCM Audio Interface
Resolution (Bits)	24 b
Chiwerengero cha ma ADC / ma DAC	2 / 2
Sigma Delta	Inde
S/N Ratio, ADCs / DACs (db) Mtundu	92 / 102
Dynamic Range, ADCs / DACs (db) Mtundu	93/97
Voltage - Supply, Analogi	2.7V ~ 3.6V
Voltage - Supply, Digital	1.65V ~ 1.95V
Kutentha kwa Ntchito	-40°C ~ 85°C
Mtundu Wokwera	Surface Mount
Phukusi / Mlandu	32-VFQFN Yowonekera Pad
Phukusi la chipangizo cha Supplier	32-VQFN (5x5)
Nambala Yoyambira Yogulitsa	Chithunzi cha TLV320

Woyang'anira PWM

Pulse Width Modulation (PWM) imatanthawuza kugwiritsa ntchito kutulutsa kwa digito kwa microprocessor kuwongolera dera la analogi ndipo ndi njira yolembera pa digito mulingo wa siginecha ya analogi.Kuwongolera ma analogi pa digito kumatha kuchepetsa mtengo ndi kugwiritsa ntchito mphamvu kwadongosolo.Ma microcontroller ambiri amakhala ndi owongolera a PWM mkati mwawo.

Mfundo yofunika

Kufotokozera mwachidule mfundo za woyang'anira PWM
Mfundo yaikulu ya ulamuliro wa PWM imachokera ku mfundo yakuti mapiko opapatiza a voliyumu yofanana ndi mawonekedwe osiyanasiyana amakhala ndi zotsatira zofanana akawonjezeredwa ku chiyanjano ndi inertia.Pali njira zingapo zogawira kusinthasintha kwa pulse wide, monga unipolar ndi bipolar, synchronous and asynchronous, rectangular wave modulation, ndi sine wave modulation.Njira yoyendetsera unipolar PWM imatanthawuza kuti mafunde onyamulira amangosandulika mbali imodzi mu theka la kuzungulira, ndipo mawonekedwe a PWM amasinthidwanso mbali imodzi, pamene njira yolamulira ya bipolar PWM imasintha mafunde onyamula mbali ziwiri mu theka la kuzungulira. , ndipo mawonekedwe a PWM amasinthidwanso mbali ziwiri.Kutengera ngati chizindikiro chonyamulira chikulumikizidwa ndi siginecha yosinthira, kuwongolera kwa PWM kumatha kugawidwa m'masinthasintha osinthika komanso kusinthasintha kosinthika.Rectangular waveform kugunda m'lifupi kusinthasintha yodziwika ndi linanena bungwe zimachitika m'lifupi ndime kukhala ofanana m'lifupi, ndipo akhoza kulamulira chiwerengero cha harmonics;Sine waveform kugunda m'lifupi kusinthasintha amakhala ndi linanena bungwe zimachitika zimachitika m'lifupi ndime, osati ofanana m'lifupi, m'lifupi amasintha malinga ndi lamulo sine, linanena bungwe waveform ndi pafupi ndi sine waveform.Sine wave pulse width modulation imatchedwanso SPWM.kupanga pulse m'lifupi molingana ndi chizindikiro chowongolera ndiye chinsinsi cha njirayi.Njira yofananira ya mafunde atatu, njira yofananira ya hysteresis loop, ndi njira yamagetsi yamagetsi yamagetsi imagwiritsidwa ntchito kwambiri.

Owongolera a PWM

Olamulira a PWM ndi opanga odziwika bwino.
Odziwika kwambiri ndi Texas Instruments, Motorola, Feifei Semiconductor, Unitrode, Micro Linear, Silicon General Semiconductor, Siemens, STMicroelectronics, ndi Royal Philips Semiconductors ku Netherlands, ndi zina zambiri.

Za Mankhwala

Ma TL284xB ndi TL384xB owongolera mabwalo ophatikizika amapereka zinthu zomwe ndizofunikira kuti mugwiritse ntchito njira zowongolera zakunja kapena za DC-to-dc zokhazikika, zokhala ndi zigawo zochepa zakunja.Mabwalo omwe akugwiritsidwa ntchito mkati amaphatikiza kutsekeka kwamagetsi (UVLO) ndi zolozera zolondola zomwe zimakonzedwa kuti zikhale zolondola pakulowetsa zolakwika za amplifier.Mabwalo ena amkati amaphatikizanso malingaliro owonetsetsa kuti akugwira ntchito, chofananira cha pulse-width modulation (PWM) chomwe chimaperekanso malire apano, komanso gawo lotulutsa la totem-pole lomwe limapangidwa kuti liziyambitsa kapena kumiza pakali pano.Gawo lotulutsa, loyenera kuyendetsa ma MOSFETs a N-channel, ndilotsika pamene ili kunja.
Mndandanda wa TL284xB ndi TL384xB ndi pini yogwirizana ndi TL284x yokhazikika ndi TL384x ndikuwongolera zotsatirazi.Pakalipano poyambira amatchulidwa kuti ndi 0.5 mA (max), pamene oscillator discharge panopa amakonzedwa mpaka 8.3 mA (typ).Kuonjezera apo, panthawi yotseketsa zowonongeka, zotulutsazo zimakhala ndi mphamvu yowonjezereka ya 1.2 V pamene ikumira 10 mA (VCC = 5 V).
Kusiyana kwakukulu pakati pa mamembala a mndandandawu ndi malire a UVLO ndi kuchuluka kwa ntchito.Mawonekedwe a UVLO a 16 V (pa) ndi 10 V (ozimitsa) pazida za TLx842B ndi TLx844B amawapangitsa kukhala oyenera kugwiritsa ntchito popanda intaneti.Mipata yofananira pazida za TLx843B ndi TLx845B ndi 8.4 V (on) ndi 7.6 V (yozimitsa).Zida za TLx842B ndi TLx843B zimatha kugwira ntchito mozungulira 100%.Magawo a 0% mpaka 50% amapezedwa ndi TLx844B ndi TLx845B powonjezera chosinthira chamkati, chomwe chimatseka zotuluka pa wotchi ina iliyonse. 40°C mpaka 85°C.Zida za TL384xB-zodziwika kuti zizigwira ntchito kuchokera ku 0 ° C mpaka 70 ° C.

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