DIO2140 DIOO | Alldatasheet

Document overview

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Technical content

Features

 Maximum output:>2.5W,outputunder4Ω load  Distortionrate(THD): 0.05% (VDD =5.0V,PO =1W)  Highefficiency upto83%at400mW  Filter-freeClass-Darchitecture  Needsonlythreeexternalcomponents  Shortcircuit protection function  Thermalshutdownfunction  Undervoltagelockout function  Greenpackage: DFN-8and MSOP-8

Applications

 WirelessorcellularhandsetsandPDAs  Personalnavigationdevices  Generalportableaudiodevices Descriptions The DIO2140 is a 2.8 W high-efficiency filter-free Class-D audio amplifier, which needs only three external components. Its optimized PWM output stageeliminatestheLCoutputfilter. The DIO2140 features its filter-free Class-D architecture, which leads to a reduction of peripheral components amount, PCB board area, and system cost. And high efficiency of up to 90% makes it suitable for cell phones and other mobiledeviceapplications. Moreover, the DIO2140 is also equipped with protection functions, such as a short circuit protection function for the speaker output terminal, thermal shutdown function for inside of thedevice,andundervoltagelockout. BlockDiagram OrderingInformation Part Number TopMarking RoHS MSL TA Package DIO2140CD8 D2140 Green Level-3 -40to+85°C DFN-8 Tape&Reel,3000 DIO2140CM8 DIO2140 Green Level-3 -40to+85°C MSOP-8 Tape&Reel,3000

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier PinAssignment Figure1PinAssignment(TopView) PinDescriptions Number Name I/O Function

1 OUTP Outputterminal Positiveoutputterminal(differential+)

2 PVDD Power Powersupply

3 VDD Power Powersupply

4 INN Analogterminal Negativeinput terminal(differential-)

5 INP Analogterminal Positiveinputterminal(differential+)

6 SHDN Inputterminal Shutdownterminal(activelowlogic)

7 GND GND High-currentground

8 OUTN Outputterminal Negativeoutputterminal(differential-)

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier AbsoluteMaximumRatings Stresses beyond those listed under the Absolute Maximum Rating table may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications isnot implied. Exposuretoabsolute maximum ratingconditions for extended periods may affectdevice reliability. Symbol Parameter Rating Unit VDD Supplyvoltage Inactivemode -0.3to6 V InSHDNmode -0.3to7 VI Inputvoltage -0.3toVDD +0.3 V TA Operatingfree-airtemperature -40to85 °C TSTO Storagetemperature -65to150 °C Leadtemperaturerating 260 °C ESD HBM 6 kV θJA Packagethermal resistance DFN-8 47.9 °C/WMSOP-8 180 θJC ThermalResistance MSOP-8 75 RecommendOperatingConditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended Operating conditions are specified to ensure optimal performance to the datasheet specifications. Does not Recommend exceeding them or designing toAbsoluteMaximum Ratings. Symbol Parameter Conditions Min Typ Max Unit VDD Powersupplyvoltage InpackageMSOPandDFN, 4Ωload 2.5 5.5 V TA Operatingambienttemperature -40 85 °C VIH High-levelinputvoltage SHDN 1.3 VDD V VIL Low-levelinputvoltage SHDN 0 0.35 V RI Inputresistance Gain≤20V/V(26dB) 15 kΩ VIC Commonmode inputvoltage range VDD =2.5V,5.5V, CMRR≤-49dB 0.5 VDD-0.8 V TJ Junctiontemperaturerange -40 125 °C

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier ElectricalCharacteristics Typicalvalue:TA =25°C,Gain=2V/V,RL =8Ω,unlessotherwisespecified. Symbol Parameters Conditions Min Typ Max Unit IQ Quiescentcurrent VDD =5V,noload 4.6 6 mA VDD =3.6V,noload 3.5 mA ISD Consumptioncurrentinshutdown mode VDD =3.6V,CTRL=0V 1 μA VIH High-levelinputthresholdvoltage VDD =5V 1.2 V VIL Low-levelinputthresholdvoltage VDD =5V 0.7 V RDS(ON) Staticdrain-sourceon-state resistance VDD =5V,noload 400 mΩVDD =3.6V,noload 500 VDD =2.5V,noload 700 CMRR Commonmoderejectionratio VDD =2.5Vto5.25V, VIC = VDD/2to0.5V, VIC= VDD/2toVDD –0.8V -88 -49 dB PSRR Powersupplyrejectionratio VDD =2.5Vto5.25V -75 -55 dB fSW Switchingfrequency VDD =2.5Vto5.25V 650 750 800 kHz AV Gain VDD =2.5Vto5.25V 300 R 315 R V V ResistancefromshutdowntoGND 300 kΩ |VOS| Outputoffsetvoltage VI =0V,AV =2V/V, VDD =2.5Vto5.25V 1 10 mV PO Outputpower THD+N=10%, f=1kHz, RL =4Ω, VDD = 5V 2.8 WVDD = 3.6V 1.45 VDD = 2.5V 0.52 THD+N=1%, f=1kHz, RL =4Ω, VDD = 5V 2.08 WVDD = 3.6V 1.16 VDD = 2.5V 0.42 THD+N=10%, f=1kHz, RL =8Ω, VDD = 5V 1.7 WVDD = 3.6V 0.86 VDD = 2.5V 0.33 THD+N=1%, f=1kHz, RL =8Ω, VDD = 5V 1.19 WVDD = 3.6V 0.69 VDD = 2.5V 0.28 THD+N Totalharmonicdistortion+noise VDD =5V,PO =1W,RL =8Ω, f=1kHz 0.07 % 285 R

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier VDD =3.6V,PO = 0.5W, RL =8Ω,f=1kHz 0.08 % VDD =2.5V,PO = 200mW, RL =8Ω,f=1kHz 0.10 % η Efficiency PO= 1W,RL =8Ω,f=1kHz 86 % KSVR Supplyripplerejectionratio VDD =3.6V,inputac-grounded with CI =2Μf,f=217Hz, V(RIPPLE) =200 mVPP -87 dB SNR Signal-to-noiseratio VDD =5V,PO =1W,RL =8Ω 97 dB Vn Outputvoltagenoise VDD =3.6V, f=20Hzto20kHz, inputsac-grounded withCI =2μF Noweighting 48 μVRMS A-weighting 36 ZI Inputimpedance 142 150 158 kΩ Start-uptimefromshutdown VDD =3.6V 1 mS Specificationssubjecttochangewithoutnotice.

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier TypicalPerformanceCharacteristics Alltypicalvalue:TA =25°C,Gain=2V/V,unlessotherwisespecified.

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier BlockDiagram ApplicationInformation FullyDifferentialAmplifier The DIO2140 is a fully differential amplifier with differential inputs and outputs. The fully differential amplifier consists of a differential amplifier and a common-mode amplifier. The differential amplifier ensures that the amplifier outputs a differential voltage that is equal to the differential input times the gain. The common-mode feedback ensures that the common-mode voltage at the output is biased around VDD/2 regardless of the common-mode voltage at the input. The fully differential DIO2140 can still be used with a single-ended input; however, the DIO2140 should be used with differential inputs when the device in a noisy environment, like a wirelesshandset,toensuremaximumnoiserejection. AdvantagesofFullyDifferentialAmplifiers -Output-couplingcapacitorsarenotrequired -Mid-supply bypasscapacitornot required -BetterRF-immunity

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier Analog signalinput For a differential input, input signals to P and N pins via DC-cut capacitors (CI).And, with an input impedance of 150kΩ(typ.),alowercut-offfrequencyofaninputsignalbecomes32.1HzatCI =33nF. Forasignal-endedinput,inputasignaltoPviaaDC-cutcapacitor(CI).Atthistime,Npinshouldbeconnectedto AVSSviaaDC-cutcapacitor(CI)withthesamecapacitance.GainandalowerCut-offfrequencyarethesameas in the above case.In addition, the output impedance (ZOUT) of the former source circuit, including signal paths up toPterminaland Nterminalshouldbedesigned tobecome600Ωor lower. Recommended ProtectionDiode It is necessary to connect the backward diode with the output terminal to prevent IC destruction by the output self-excitationphenomenonwhen usingitontheconditionsof4.5V<VDD ≤5.25V. ComponentSelection Figure 2 shows a DIO2140 with differential inputs and input capacitors, and Figure 3 shows a DIO2140 with single-ended inputs. Differential inputs should be used whenever possible because single-ended inputs are muchmoresusceptibletonoise. REF DES Value EIASize RI 150kΩ(±5%) 0402 CI 33nF(±10%) 0201

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier InputResistors(RI) Theinputresistorssetthegainoftheamplifieraccording toEquation1. Resistor matching is very important in fully differential amplifiers. The balance of the output on the reference voltage depends on matched ratios of the resistors. CMRR, PSRR, and cancellation of the second harmonic distortion diminish if resistor mismatch occurs. Therefore, it is recommended to use 1% tolerance resistors or better to keep the performance optimized. Matching is moreimportant than overall tolerance. Resistor array with 1% matchingcanbeusedwith atolerancegreaterthan 1%. Decoupling Capacitor(CS) The DIO2140 is a high-performance class-D audio amplifier that requires adequate power supply decoupling to ensure the efficiency is high and total harmonic distortion (THD) is low. For higher frequency transients, spikes, or digital hash on the line, a good low equivalent-series-resistance (ESR) ceramic capacitor, typically 1 μF, placedascloseaspossibletothedeviceVDD leadworksbest. InputCapacitors(CI) The DIO2140 does not require input coupling capacitors if the design uses a different source that is biased from 0.5 V to VDD - 0.8 V. If the input signal is not biased within the recommended common-mode input range, if needing to use the input as a high pass filter, or if using a single-ended source, input coupling capacitors are required.Theinputcapacitorsandinputresistorsformahigh-passfilter withthecornerfrequency,fC,determined inEquation2, fc= )2( IICR ThermalProtection Function This is the function to establish the thermal protection mode when detecting excessive high temperature of the DIO2140 itself. In the thermal protection mode, the differential output terminal becomes Weak Low state. And whenthe DIO2140gets outofsuchcondition,the protectionmodeiscanceled. )(Ω1502 V V R k I Gain 1

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier PhysicalDimensions:DFN3*3-8 CommonDimensions (Unitsofmeasure=Millimeter) Symbol Min Nom Max A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 0.20 REF b 0.30 0.35 0.40 D 2.90 3.00 3.10 E 2.90 3.00 3.10 D2 1.50 1.60 1.70 E2 2.30 2.40 2.50 e 0.55 0.65 0.75 H 0.30 REF K 0.20 0.30 0.40 L 0.30 0.40 0.50 R 0.16 - -

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier PhysicalDimensions:MSOP-8 CommonDimensions (Unitsofmeasure=Millimeter) Symbol Min Nom Max A - - 1.10 A1 0 - 0.15 A2 0.75 0.85 0.95 A3 0.25 0.35 0.39 b 0.28 - 0.37 b1 0.27 0.30 0.33 c 0.15 - 0.20 c1 0.14 0.15 0.16 D 2.90 3.00 3.10 E 4.70 4.90 5.10 E1 2.90 3.00 3.10 e 0.55 0.65 0.75 L 0.45 0.60 0.80 L1 0.95 REF L2 0.25 BSC R 0.07 - - R1 0.07 - - Θ 0° - 8° Θ1 9° 12° 15°

www.dioo.com ©2022DIOOMICROCIRCUITSCO.,LTD DIO2140•Rev.1.5 2.8W,MonauralFilter-Free,Class-DAudioAmplifier CONTACTUS Dioo is a professional design and sales corporation for high-quality performance analog semiconductors. The company focuses on industry markets, such as cell phones, handheld products, laptops, medical equipment, and so on. Dioo’s product families include analog signal processing and amplifying, LED drivers, and charger ICs. Go to http://www.dioo.com for a complete list of Dioo product families. Foradditionalproductinformationorfulldatasheet,pleasecontactoursalesdepartmentorrepresentatives.