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上传时间：2015-11-11
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毕业设计
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微格教室语音控制系统,毕业设计
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TDA2822MDUAL LOW-VOLTAGE POWER AMPLIFIERMarch 1995PIN CONNECTION (Top view)MINIDIPORDERING NUMBER : TDA2822M.SUPPLY VOLTAGE DOWN TO 1.8V.LOW CROSSOVER DISTORSION.LOW QUIESCENT CURRENT.BRIDGE OR STEREO CONFIGURATIONDESCRIPTIONThe TDA2822M is a monolithic integrated circuit in8 lead Minidip package. It is intended for use asdual audio power amplifier in portable cassetteplayers and radios.1/11ntsSCHEMATIC DIAGRAMABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitVsSupply Voltage 15 VIoPeak Output Current 1 APtot Total Power Dissipation at Tamb =50Cat Tcase =50C11.4WWTstg,TjStorage and Junction Temperature 40, + 150 CTHERMAL DATASymbol Parameter Value UnitRth j-ambThermal Resistance Junction-ambient Max. 100 C/WRth j-caseThermal Resistance Junction-pin (4) Max. 70 C/WTDA2822M2/11ntsELECTRICAL CHARACTERISTICS (VS=6V,Tamb=25oC, unless otherwise specified)Symbol Parameter Test Conditions Min. Typ. Max. UnitSTEREO (test circuit of Figure 1)Vs Supply Voltage 1.8 15 VVoQuiescent Output VoltageVs =3V2.71.2VVIdQuiescent Drain Current 6 9 mAIb Input Bias Current 100 nAPo Output Power (each channel)(f = 1kHz, d = 10%) RL =32 VS=9VVS=6VVS= 4.5VVS=3VVS=2VRL=16 VS=6VRL=8 VS=9VVS=6VRL=4 VS=6VVS= 4.5VVS =3V9015170300450300120602052201000380650320110mWd Distortion (f = 1kHz) RL=32 Po= 40mWRL =16 Po= 75mWRL =8 Po= 150mW0.20.20.2%GvClosed Loop Voltage Gain f = 1kHz 36 39 41 dBGv Channel Balance 1dBRi Input Resistance f = 1kHz 100 keNTotal Input Noise Rs= 10k B = Curve AB = 22Hz to 22kHz22.5VVSVR Supply Voltage Rejection f = 100Hz, C1 = C2 = 100F2430 dBCsChannel Separation f = 1kHz 50 dBBRIDGE (test circuit of Figure 2)Vs Supply Voltage 1.8 15 VIdQuiescent Drain Current RL= 69mAVosOutput Offset Voltage(between the outputs)RL=8 50 mVIbInput Bias Current 100 nAPo Output Power (f = 1kHz, d = 10%)RL =32 VS=9VVS=6VVS= 4.5VVS=3VVS=2VRL=16 VS=9VVS=6VVS=3VRL=8 VS=6VVS= 4.5VVS =3VRL=4 VS= 4.5VVS=3VVS=2V32050900200100040020065820008001201350700220100035080mWd Distortion Po= 0.5W, RL=8, f = 1kHz 0.2 %GvClosed Loop Voltage Gain f = 1kHz 39 dBRi Input Resistance f = 1kHz 100 keN Total Input Noise Rs = 10k B = Curve AB = 22Hz to 22kHz2.53VVSVR Supply Voltage Rejection f = 100Hz 40 dBB Power Bandwidth (3dB) RL=8,Po= 1W 120 kHzTDA2822M3/11ntsFigure 1 : Test Circuit (Stereo)Figure 2 : Test Circuit (Bridge)Figure 3 : P.C. Board and Components Layoutof the Circuit of Figure 1Figure 4 : P.C. Board and Components Layoutof the Circuit of Figure 2TDA2822M4/11ntsFigure 5 : Quiescent Current versusSupply VoltageFigure 6 : Supply Voltage Rejection versusFrequencyFigure 8 : Distorsion versus Output Power(Stereo)Figure 7 : Output Power versus Supply Voltage(THD = 10%, f = 1kHz Stereo)Figure 9 : Distorsion versus Output Power(Stereo)Figure 10 : Output Power versus Supply Voltage(Bridge)TDA2822M5/11ntsFigure 11 : Distorsion versus Output Power(Bridge)Figure 12 : Total Power Dissipation versusOutput Power (Bridge)Figure 14 : Total Power Dissipation versusOutput Power (Bridge)Figure 13 : Total Power Dissipation versusOutput Power (Bridge)Figure 15 : Total Power Dissipation versusOutput Power (Bridge)TDA2822M6/11ntsFigure 16 : Typical Application in Portable PlayersFigure 17 : Application in Portable Radio ReceiversTDA2822M7/11ntsFigure 18 : Portable Radio Cassette PlayersFigure 20 : Low Cost Application in Portable Players (using only one 100F output capacitor)Figure 19 : Portable Stereo RadiosType Supply VoltageTDA 7220TDA 7211ATEA 1330TDA 7282TDA 2822M1.5 V to 6 V1.2 V to 6 V3 V to 15 V1.5 V to 6 V1.8 V to 15 VType Supply VoltageTDA 7220TDA 7211ATEA 1330TDA 2822M1.5Vto6V1.2Vto6V3 V to 15 V1.8 V to 15 VTDA2822M8/11ntsFigure 21 : 3V Stereo Cassette Player with Motot Speed ControlTDA2822M9/11ntsMINIDIP PACKAGE MECHANICAL DATADIM.mm inchMIN. TYP. MAX. MIN. TYP. MAX.A 3.32 0.131a1 0.51 0.020B 1.15 1.65 0.045 0.065b 0.356 0.55 0.014 0.022b1 0.204 0.304 0.008 0.012D 10.92 0.430E 7.95 9.75 0.313 0.384e 2.54 0.100e3 7.62 0.300e4 7.62 0.300F 6.6 0.260I 5.08 0.200L 3.18 3.81 0.125 0.150Z 1.52 0.060TDA2822M10/11ntsInformation furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibilityfor the consequences of use of such information nor for any infringement of patents or other rights of third parties which may resultfrom its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics.Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces allinformation previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in lifesupport devices or systems without express written approval of SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics - All Rights ReservedSGS-THOMSON Microel
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