HT82V73A 1500mW Audio Power Amp with Shutdown · Pin Assignment ˜ ˚ ˛ ˝ ˙ ˆ ˇ ˘ ˜˚ ˛˝˙ ˆˇ˘ ˛ ˘ ˘ Rev. 1.00 2 October 16, 2014 Rev. 1.00 3 October 16, 2014 HT82V73A

Rev. 1.00 1 October 16, 2014 Rev. 1.00 PB October 16, 2014

HT82V73A1500mW Audio Power Amp with Shutdown

Features• Operatingvoltage:2.2Vto5.5V• Highsignal-to-noiseratio• Lowdistortion• Largeoutputvoltageswing• Lowpowerconsumption• Outputpower1500mWat10%THD+Ninto8Ω(VDD=5V)

• Widetemperatureoperatingrange• Lowpower-onandchipenableordisablePOPnoise• Lowstandbycurrent• Poweroffcontrol• Candirectlydrivespeakers• 8-pinSOPpackage

Applications• Widerangeofaudioapplications

General DescriptionTheHT82V73A is an integrated classABmonospeakerdrivercontained inanSOP8-pinpackage.The device is capable of delivering 1500mWofoutputpower intoan8Ω loadwith less than10%(THD+N)distortionfroma5Vpowersupply.Whenin theshutdownmodetheverylowstandbycurrentisan important feature forawide rangeofbatterypoweredaudioapplications.

Block Diagram

Pin Assignment

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HT82V73A1500mW Audio Power Amp with Shutdown

Pin DescriptionPin No. Pin Name I/O Description

1 OUTN O Negative output2 Aud In I Audio input3 VREF O Speaker non-inverting input voltage reference4 VSS — Negative power supply, ground5 CE I Chip enable, low active6 NC — Not connected7 OUTP O Positive output8 VDD — Positive power supply

PCB Layout Consideration

It isdesirable tomaximize thePCBcooperareaconnecting toGND/EPADpin toachieve thebest thermalperformance,iftheboardspaceallowed,agroundplaneishighlydesirable.

Absolute Maximum RatingsSupplyVoltage......................... VSS−0.3VtoVSS+6.0V

StorageTemperature.......................... −50°Cto125°C

InputVoltage............................VSS−0.3VtoVDD+0.3V

OperatingTemperature........................ −40°Cto85°C

Note:Thesearestressratingsonly.Stressesexceedingtherangespecifiedunder″AbsoluteMaximumRatings″maycausesubstantialdamagetothedevice.Functionaloperationofthisdeviceatotherconditionsbeyondthoselistedin thespecificationisnot impliedandprolongedexposuretoextremeconditionsmayaffectdevicereliability.

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D.C. CharacteristicsTa=25°C, VDD=5V, VSS=0V (unless otherwise noted)

Symbol ParameterTest Conditions

Min. Typ. Max. UnitVDD Conditions

VDD Supply Voltage — — 2.2 5.0 5.5 V

IDD Quiescent Power Supply Current3V

VIN=0V, No load1 3 7 mA

5V 2 4 8 mAISD Shut-down Power Supply Current 5V VIN=0V, CE=VDD, No load — — 1 µAVIH Input High Voltage for CE — — 0.7VDD — VDD VVIL Input Low Voltage for CE — — 0 — 0.3VDD V

PO Output Power

3V

(THD+N)/S<1%, VIN=1kHz sinewave

RL=4Ω — 600 —

mW

RL=8Ω — 400 —RL=16Ω — 250 —

(THD+N)/S<10%, VIN=1kHz sinewave

RL=4Ω — 780 —RL=8Ω — 550 —RL=16Ω — 300 —

5V

(THD+N)/S<1%, VIN=1kHz sinewave

RL=4Ω — 1850 —

mW

RL=8Ω — 1200 —RL=16Ω — 700 —

(THD+N)/S<10%, VIN=1kHz sinewave

RL=4Ω — 2350 —RL=8Ω — 1500 —RL=16Ω — 850 —

A.C. CharacteristicsTa=25°C, VDD=5V, VSS=0V (unless otherwise noted)

Symbol ParameterTest Conditions

Min. Typ. Max. UnitVDD Conditions

tWake Wake-up Time 5V RL=8ΩCL=0.1µF — 100 — msCL=1µF — 150 — msCL=10µF — 175 — ms

(THD+N)/S Total Harmonic Distortion plus. Noise-to-signal Ratio 5V Output power = 500mW,

VIN=1kHz sinewave

RL=4Ω — 0.5 — %RL=8Ω — 0.2 — %RL=16Ω — 0.17 — %

S/N Signal to Noise Ratio 5V VO=1Vrms 1kHz sinewaveRL=4Ω — 71 — dBRL=8Ω — 72.5 — dBRL=16Ω — 73.5 — dB

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HT82V73A

THD+N vs. Output Power @ VDD=3V & 5V

RLOAD=4Ω, VIN=1kHz sinewave

Functional Description

OUTP Rising Time (tR)WhenCEisactivelow,thedevicerequiresacertaintimebeforeitcanoutputitsfullpowerontheOUTPpin.ThistimeisdependentuponthevalueofC1.(*seetheapplicationcircuits)

CapacitortR

Voltage0.1µF 1µF 4.7µF 10µF

2.2V 15ms 30ms 90ms 185ms3.0V 15ms 30ms 90ms 185ms4.0V 15ms 30ms 90ms 185ms

Forbatterybasedapplications,powerconsumptionisakeyissue, thereforetheamplifiershouldbeturnedoffwhen in thestandbystate. Inorder toeliminateanyspeakersoundburstswhileturningtheamplifieron, theapplicationcircuit,whichwill incorporatea capacitancevalueofC1, shouldbe adjusted inaccordancewith the speaker′s audio frequencyresponse.AgreatervalueofC1will improve thenoise burstwhile turning on the amplifier.Therecommendedoperationsequenceis:

TurnOn:"AudIn"signalstandby(1/2VDD)→enableamplifier→wait tR for amplifier ready→"Aud In"signalstart

TurnOff:"AudIn"signalfinish→disableamplifier→waittRforamplifieroff→"AudIn"signaloff

IftheapplicationisnotpoweredbybatteriesandthereisnoproblemwithamplifierOn/Offissue,acapacitorvalueof0.1µFforC1isrecommended.

VDD=3VVDD=5V

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RLOAD=8Ω, VIN=1kHz sinewave

RLOAD=16Ω, VIN=1kHz sinewave

VDD=3V

VDD=3V

VDD=5V

VDD=5V

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Application Circuits

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Package InformationNotethat thepackageinformationprovidedhereisforconsultationpurposesonly.Asthis informationmaybeupdatedatregularintervalsusersareremindedtoconsulttheHoltekwebsiteforthelatestversionofthepackageinformation.

Additionalsupplementaryinformationwithregardtopackagingislistedbelow.Clickontherelevantsectiontobetransferredtotherelevantwebsitepage.

• FurtherPackageInformation(includeOutlineDimensions,ProductTapeandReelSpecifications)

• PackingMeterialsInformation

• Cartoninformation

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HT82V73A

8-pin SOP (150mil) Outline Dimensions

SymbolDimensions in inch

Min. Nom. Max.A — 0.236 BSC —B — 0.154 BSC —C 0.012 — 0.020C′ — 0.193 BSC —D — — 0.069E — 0.050 BSC —F 0.004 — 0.010G 0.016 — 0.050H 0.004 — 0.010α 0° — 8°

SymbolDimensions in mm

Min. Nom. Max.A — 6.00 BSC —B — 3.90 BSC —C 0.31 — 0.51C′ — 4.90 BSC —D — — 1.75E — 1.27 BSC —F 0.10 — 0.25G 0.40 — 1.27H 0.10 — 0.25α 0° — 8°

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HT82V73A

Copyright© 2014 by HOLTEK SEMICONDUCTOR INC.

The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek's products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.