Semicon Thawj Ntau Yam Khoom Siv Hluav Taws Xob Zoo Tshaj STC AVR 8254 Microcontroller MCU IC TL2844BDR-8 SOP

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Product Detail

Khoom cim npe

TL284xB thiab TL384xB series yog tus pin sib xws nrog tus qauv TL284x thiab TL384x nrog rau kev txhim kho hauv qab no.Qhov pib-up tam sim no tau teev tseg yog 0.5 mA (max), thaum lub oscillator tawm tam sim no yog trimmed rau 8.3 mA (hom).Tsis tas li ntawd, thaum lub sij hawm undervoltage lockout tej yam kev mob, cov zis muaj ib tug siab tshaj plaws saturation voltage ntawm 1.2 V thaum sinking 10 mA (VCC = 5 V).Qhov sib txawv loj ntawm cov tswv cuab ntawm cov koob no yog UVLO qhov pib thiab qhov siab tshaj plaws ntawm lub voj voog.Hom UVLO qhov pib ntawm 16 V (on) thiab 10 V (tawm) ntawm TLx842B thiab TLx844B cov cuab yeej ua rau lawv zoo tagnrho rau kev siv off-line.Cov kev sib raug zoo ntawm cov khoom siv rau TLx843B thiab TLx845B yog 8.4 V (on) thiab 7.6 V (tawm).Cov khoom siv TLx842B thiab TLx843B tuaj yeem ua haujlwm rau lub luag haujlwm mus txog 100%.Lub luag haujlwm-lub voj voog ntau ntawm 0% mus rau 50% yog tau los ntawm TLx844B thiab TLx845B los ntawm kev sib ntxiv ntawm ib qho kev sib txuas sab hauv flip-flop, uas ua rau cov khoom tso tawm tawm txhua lwm lub voj voog.The TL284xB-series cov cuab yeej yog tus cwj pwm rau kev ua haujlwm los ntawm - 40 ° C rau 85 ° C.TL384xB-series cov cuab yeej yog tus yam ntxwv rau kev ua haujlwm ntawm 0 ° C txog 70 ° C.

Yam khoom

HOM	Kev piav qhia
Qeb	Integrated Circuits (ICs) Interface - CODECs
Mfr	Texas Instruments
Series	-
Pob	Daim kab xev & Reel (TR) Daim kab xev (CT) Digi-Reel®
SPQ	250 T&R
Yam khoom	Active
Hom	Stereo Audio
Data Interface	PCM Audio Interface
Kev daws teeb meem (ntsis)	24b ib
Tus naj npawb ntawm ADCs / DACs	2 / 2
Sigma Delta	Yog lawm
S/N Ratio, ADCs/DACs (db) Typ	92/102 ib
Dynamic Range, ADCs / DACs (db) Typ	93/97 ib
Voltage - Supply, Analog	2.7V ~ 3.6V
Voltage - Supply, Digital	1.65V ~ 1.95V
Ua haujlwm kub	-40 ° C ~ 85 ° C
Mounting Hom	Nto Mount
Pob / Case	32-VFQFN nthuav tawm Pad
Cov Khoom Muag Khoom Pob	32-VQFN (5x5)
Base Product Number	TIAB SA 320

PWM controller

Pulse Width Modulation (PWM) yog hais txog kev siv digital output ntawm microprocessor los tswj lub analog circuit thiab yog ib txoj hauv kev ntawm digitally coding qib ntawm analog teeb liab.Kev tswj cov analog circuits digitally tuaj yeem txo tus nqi thiab kev siv hluav taws xob ntawm lub cev.Ntau lub microcontrollers muaj PWM controllers nyob rau hauv lawv.

Txoj Cai

Cov lus piav qhia luv luv ntawm lub hauv paus ntsiab lus ntawm PWM maub los
Lub hauv paus ntsiab lus ntawm PWM tswj yog raws li qhov tseeb hais tias nqaim pulses ntawm sib npaug impulse ntim thiab cov duab sib txawv muaj cov nyhuv tib yam thaum ntxiv rau qhov txuas nrog inertia.Muaj ntau txoj hauv kev los faib cov mem tes dav hloov pauv, xws li unipolar thiab bipolar, synchronous thiab asynchronous, rectangular wave modulation, thiab sine wave modulation.Txoj kev tswj hwm unipolar PWM txhais tau hais tias cov neeg nqa khoom nthwv dej tsuas yog hloov pauv hauv ib qho kev coj ua hauv ib nrab ntawm lub voj voog, thiab PWM waveform kuj tsuas yog hloov pauv hauv ib qho kev coj, thaum lub zog bipolar PWM tswj txoj kev hloov cov cab cab hauv ob qho kev qhia hauv ib nrab lub voj voog. , thiab PWM waveform kuj tau hloov nyob rau hauv ob txoj kev.Nyob ntawm seb tus cab kuj teeb liab synchronized nrog lub teeb liab modulating, PWM tswj tau muab faib ua synchronous modulation thiab asynchronous modulation.Rectangular waveform pulse width modulation yog tus cwj pwm los ntawm cov zis pulse dav kem ua qhov dav sib npaug, thiab tuaj yeem tswj tau qee tus lej ntawm kev sib haum xeeb;Sine waveform pulse width modulation yog characterized by output pulse width kem, tsis sib npaug zos, qhov dav hloov raws li txoj cai sine, cov zis waveform yog ze rau sine waveform.Sine wave pulse width modulation tseem hu ua SPWM.tsim cov mem tes dav raws li lub teeb liab tswj yog tus yuam sij rau cov txheej txheem no.Daim duab peb sab waveform sib piv txoj kev, hysteresis voj kev sib piv txoj kev, thiab qhov chaw voltage vector txoj kev yog feem ntau siv.

PWM controllers

PWM controllers yog cov tuam txhab muaj npe nrov.
Cov nto moo tshaj plaws yog Texas Instruments, Motorola, Feifei Semiconductor, Unitrode, Micro Linear, Silicon General Semiconductor, Siemens, STMicroelectronics, thiab Royal Philips Semiconductors hauv Netherlands, thiab lwm yam.

Hais txog Khoom

Lub TL284xB thiab TL384xB series ntawm kev tswj kev sib xyaw ua ke muab cov yam ntxwv uas tsim nyog los siv off-line lossis dc-to-dc tsau-frequency tam sim no-hom tswj schemes, nrog tsawg kawg ntawm cov khoom sab nraud.Internally siv circuits muaj xws li ib tug undervoltage lockout (UVLO) thiab ib tug precision siv uas yog trimmed rau qhov tseeb ntawm qhov yuam kev amplifier input.Lwm cov kev sib txuas sab hauv muaj xws li cov logic los xyuas kom meej cov kev ua haujlwm latched, lub pulse-width modulation (PWM) comparator uas tseem muab kev tswj hwm tam sim no, thiab lub totem-ncej tso zis theem tsim los rau qhov chaw lossis dab dej siab tam sim no.Cov zis theem, tsim nyog rau kev tsav tsheb N-channel MOSFETs, yog tsawg thaum nws nyob rau hauv lub xeev tawm.
TL284xB thiab TL384xB series yog tus pin sib xws nrog tus qauv TL284x thiab TL384x nrog rau kev txhim kho hauv qab no.Qhov pib-up tam sim no tau teev tseg yog 0.5 mA (max), thaum lub oscillator tawm tam sim no yog trimmed rau 8.3 mA (hom).Tsis tas li ntawd, thaum lub sij hawm undervoltage lockout tej yam kev mob, cov zis muaj ib tug siab tshaj plaws saturation voltage ntawm 1.2 V thaum sinking 10 mA (VCC = 5 V).
Qhov sib txawv loj ntawm cov tswv cuab ntawm cov koob no yog UVLO qhov pib thiab qhov siab tshaj plaws ntawm lub voj voog.Hom UVLO qhov pib ntawm 16 V (on) thiab 10 V (tawm) ntawm TLx842B thiab TLx844B cov cuab yeej ua rau lawv zoo tagnrho rau kev siv off-line.Cov kev sib raug zoo ntawm cov khoom siv rau TLx843B thiab TLx845B yog 8.4 V (on) thiab 7.6 V (tawm).Cov khoom siv TLx842B thiab TLx843B tuaj yeem ua haujlwm rau lub luag haujlwm mus txog 100%.Lub luag haujlwm-lub voj voog ntau ntawm 0% mus rau 50% yog tau los ntawm TLx844B thiab TLx845B los ntawm kev sib ntxiv ntawm ib qho kev sib txuas sab hauv flip-flop, uas ua rau cov khoom tso tawm tawm txhua lwm lub voj voog.The TL284xB-series cov cuab yeej yog tus cwj pwm rau kev ua haujlwm los ntawm - 40 ° C rau 85 ° C.TL384xB-series cov cuab yeej yog tus yam ntxwv rau kev ua haujlwm ntawm 0 ° C txog 70 ° C.

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