TDA7388 规格书.pdf

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1、This is information on a product in full production.September 2013DocID14256 Rev 61/131TDA73884 x 45 W quad bridge car radio amplifierDatasheet-production dataFeaturesHigh output power capability:4 x 45 W/4 max.4 x 26 W/4 14.4 V,1 kHz,10%Low distortionLow output noiseStandby functionMute functionAut

2、omute at min.supply voltage detectionLow external component count:Internally fixed gain(26 dB)No external compensationNo bootstrap capacitorsProtections:Output short circuit to gnd,to VS,across the loadVery inductive loadsOverrating chip temperature with soft thermal limiterLoad dump voltageFortuito

3、us open GNDReversed batteryESDDescriptionThe TDA7388 is an AB class audio power amplifier,packaged in Flexiwatt 25 and designed for high end car radio applications.Based on a fully complementary PNP/NPN configuration,the TDA7388 allows a rail to rail output voltage swing with no need of bootstrap ca

4、pacitors.The extremely reduced boundary components count allows very compact sets.?Flexiwatt25Table 1.Device summaryOrder codePackagePackingTDA7388Flexiwatt25TContentsTDA73882/13DocID14256 Rev 6Contents1Pin connection and test/application diagrams.52Electrical specifications.62.1Absolute maximum rat

5、ings.62.2Thermal data .62.3Electrical characteristics.72.4Electrical characteristic curves.83Application hints.103.1SVR .103.2Input stage .103.3Standby and muting .104Package information.115Revision history .12DocID14256 Rev 63/13TDA7388List of tablesList of tablesTable 1.Device summary.1Table 2.Abs

6、olute maximum ratings.6Table 3.Thermal data.6Table 4.Electrical characteristics.7Table 5.Document revision history .12List of figuresTDA73884/13DocID14256 Rev 6List of figuresFigure 1.Pin connection(top view).5Figure 2.Standard test and application circuit.5Figure 3.Quiescent current vs.supply volta

7、ge.8Figure 4.Output power vs.supply voltage(4 Ohm).8Figure 5.Distortion vs.output power(4 Ohm).8Figure 6.Distortion vs.frequency(4 Ohm).8Figure 7.Supply voltage rejection vs.frequency.8Figure 8.Crosstalk vs.frequency .8Figure 9.Output noise vs.source resistance .9Figure 10.Total power disipation&eff

8、iciency(4 Ohm,sine).9Figure 11.Power dissipation vs.average output power(4 Ohm,audio program simulation).9Figure 12.ITU R-ARM frequency response,weighting filter for transient pop.9Figure 13.Flexiwatt25 mechanical data and package dimensions.11DocID14256 Rev 65/13TDA7388Pin connection and test/appli

9、cation diagrams1 Pin connection and test/application diagramsFigure 1.Pin connection(top view)Figure 2.Standard test and application circuit?Electrical specificationsTDA73886/13DocID14256 Rev 62 Electrical specifications2.1 Absolute maximum ratings 2.2 Thermal data Table 2.Absolute maximum ratingsSy

10、mbolParameterValueUnitVSOperating supply voltage18VVS(DC)DC supply voltage28VVS(pk)Peak supply voltage(t=50 ms)50VIOOutput peak current:Repetitive(duty cycle 10%at f=10 Hz)Non repetitive(t=100 s)4.55.5APtotPower dissipation,(Tcase=70 C)80WTjJunction temperature150CTstgStorage temperature 55 to 150CT

11、able 3.Thermal dataSymbolParameterValueUnitRth j-caseThermal resistance junction-to-case max.1C/WDocID14256 Rev 67/13TDA7388Electrical specifications2.3 Electrical characteristicsVS=14.4 V;f=1 kHz;Rg=600;RL=4;Tamb=25 C;Refer to the test and application diagram(Figure 2),unless otherwise specified.Ta

12、ble 4.Electrical characteristicsSymbolParameterTest conditionMin.Typ.Max.UnitIq1Quiescent currentRL=120190350mAVOSOutput offset voltagePlay mode-100mVdVOSDuring mute ON/OFF output offset voltageITU R-ARM weightedsee Figure 12-80-+80mVGvVoltage gain-252627dBPoOutput powerTHD=10%;VS=14.4 V2226-WPo max

13、Max.output power(1)VS=14.4 V3741-WVS=15.2 V-45-THDDistortionPo=4 W-0.040.15%eNoOutput noiseA Weighted-5070VBw=20 Hz to 20 kHz-70100VSVRSupply voltage rejectionf=100 Hz;Vr=1 Vrms5065-dBfchHigh cut-off frequencyPo=0.5 W100200-kHzRiInput Impedance-70100-kCTCross talkf=1 kHz;Po=4 W6070-dBf=10 kHz;Po=4 W

14、-60-dBISBStandby current consumptionVSt-by=0V-20AVSB outStandby OUT threshold voltage(Amp:ON)3.5-VVSB INStandby IN threshold voltage(Amp:OFF)-1.5VAMMute attenuationPOref=4 W8090-dBVM outMute OUT threshold voltage(Amp:play)3.5-VVM inMute IN threshold voltage(Amp:mute)-1.5VVAM inVS automute threshold(

15、Amp:mute);Att.80 dB;POref=4 W(Amp:play);Att.0.1 dB;PO=0.5 W-7.66.58.5VIpin22Muting pin currentVMUTE=1.2 V(Source current)51120A1.Saturated square wave output.Electrical specificationsTDA73888/13DocID14256 Rev 62.4 Electrical characteristic curvesFigure 3.Quiescent current vs.supply voltageFigure 4.O

16、utput power vs.supply voltage(4 Ohm)Figure 5.Distortion vs.output power(4 Ohm)Figure 6.Distortion vs.frequency(4 Ohm)Figure 7.Supply voltage rejection vs.frequency Figure 8.Crosstalk vs.frequency?DocID14256 Rev 69/13TDA7388Electrical specificationsFigure 9.Output noise vs.source resistanceFigure 10.

17、Total power disipation&efficiency(4 Ohm,sine)Figure 11.Power dissipation vs.average output power(4 Ohm,audio program simulation)Figure 12.ITU R-ARM frequency response,weighting filter for transient pop?Application hintsTDA738810/13DocID14256 Rev 63 Application hintsRef.to the circuit of Figure 2.3.1

18、 SVRBesides its contribution to the ripple rejection,the SVR capacitor governs the turn ON/OFF time sequence and,consequently,plays an essential role in the pop optimization during ON/OFF transients.To conveniently serve both needs,its minimum recommended value is 10 F.3.2 Input stageThe TDA7388s in

19、puts are ground-compatible and can stand very high input signals(8 Vpk)without any performances degradation.If the standard value for the input capacitors(0.1 F)is adopted,the low frequency cut-off amounts to 16 Hz.3.3 Standby and mutingIf standby and muting are not used,a straight connection to VS

20、of their respective pins would be admissible.Conventional/low-power transistors can be employed to drive muting and standby pins in absence of true CMOS ports or microprocessors.R-C cells have always to be used in order to smooth down the transitions for preventing any audible transient noises.Since

21、 a DC current of about 10 A normally flows out of pin 22,the maximum allowable muting-series resistance(R2)is 70 k,which is sufficiently high to permit a muting capacitor reasonably small(about 1 F).If R2 is higher than recommended,the involved risk is that the voltage at pin 22 may rises to above t

22、he 1.5 V threshold voltage and the device consequently fails to turn OFF when the mute line is brought down.About the stand-by,the time constant to be assigned in order to obtain a virtually pop-free transition has to be slower than 2.5 V/ms.DocID14256 Rev 611/13TDA7388Package information4 Package i

23、nformationIn order to meet environmental requirements,ST offers these devices in different grades of ECOPACK packages,depending on their level of environmental compliance.ECOPACK specifications,grade definitions and product status are available at:.ECOPACK is an ST trademark.Figure 13.Flexiwatt25 me

24、chanical data and package dimensions?Revision historyTDA738812/13DocID14256 Rev 65 Revision history Table 5.Document revision historyDateRevisionChanges06-Dec-20071Initial release.12-Jul-20102Document status promoted from preliminary data to datasheet.26-Apr-20123Modified Features on page 1.Updated

25、Table 4:Electrical characteristics on page 7.20-Jun-20124Updated Section 3.3:Standby and muting.11-Mar-20135Added Section 2.4:Electrical characteristic curves.17-Sep-20136Updated Disclaimer.DocID14256 Rev 613/13TDA7388 Please Read Carefully:Information in this document is provided solely in connecti

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