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1、KA8602中文资料KA8602B LOW VOLTAGE AUDIO AMPLIFIERINTRODUCTIONThe KA8602B is the audio power amplifier available forlow voltages. KA8602B supplies differential outputs for max-imizing output swing at low voltages. KA8602B doesnt need coupling capacitors to the speaker. The gain of this amp is controlled
2、easily by two external resistors.FEATURESl Wide Supply Voltage (2 16V)l Low Quiescent Supply Current (I CC = 2.7mA : Typ)l Easy Gain Control l Medium Output PowerP O = 250mW at V CC = 6V, R L = 32?, THD = 10%l Minimum External Partsl Load Impedance Range (8? 100?)l Low Distortionl Mute Function (l C
3、C = 65A : Typ)BLOCK DIAGRAMFig. 1Device Package Operating TemperatureKA8602B 8-DIP-300 KA8602BD8-SOP-225- 20C + 70C ORDERING INFORMATIONKA8602B LOW VOLTAGE AUDIO AMPLIFIERPIN CONFIGURATIONFig. 2 PIN DESCRIPTIONABSOLUTE MAXIMUM RATINGSINPUT(+)INPUT(-)OUTPUT1Vcc RIPPLE REJECTIONMUTEOUTPUT2GNDCharacter
4、isticSymbol Vale Unit Supply VoltageOutput Current (output pin)Maximum Voltage (input, Ripple rejection, Mute pin)Applied Output Voltage (output pin) when disabled Junction TemperatureV CC I O V I (MAX)V O T J- 1.0 + 18 250- 1.0 V CC + 1.0- 1.0 V CC + 1.0- 55 + 140V mA V V CKA8602B LOW VOLTAGE AUDIO
5、 AMPLIFIERRECOMMENDED OPERATING CONDITIONS (Ta = 25C)ELECTRICAL CHARACTERISTIC(V CC = 6V, Ta = 25C, unless otherwise noted)CharacteristicSymbol Min TypMax Unit Supply Voltage Load Impedance Peak Load CurrentDifferential Gain (5KHz Bandwidth)Voltage at Mute (Pin 7)Ambient TemperatureV CC Z L I L (PK)
6、?G V V I (MUTE)Ta+2.0800-20+16100 20046V CC 470V ?mA dB V CCharacteristicSymbolTest ConditionsMinTypMaxUnitDC ELECTRICAL CHARACTERISTICS I CCV CC = 3.0V, Mute = 0.8VV CC = 16.0V, Mute = 0.8V 2.73.3 4.05.0mAV CC = 3.0V, Mute = 2.0V65100A Output Voltage (output pin)V O V CC = 3.0V V CC = 6.0V V CC = 1
7、2.0V1.01.152.655.65 1.25V Output Offset Voltage V OO V CC = 6.0V, R f = 75K ?, R L = 32?-300+30mV Output High Level V OH 2.0V V CC 16V, I out = -75mA V CC -1.0V Output Low Level V OL 2.0V V CC 16V, I out = 75mA0.16V Input Bias Current (pin 2)I BIAS -100-200nA Equivalent ResistanceR EQ pin 1pin 81001
8、81502522040K ?Input Low VoltageV IL (MUTE)0.8V MuteInput High Voltage V IH (MUTE) 2.0V Input ResistanceR I (MUTE)V CC = Mute = 16V5090175K ?AC ELECTRICAL CHARACTERISTICSOpen Loop Gain (Amp 1)G V (AMP1)80dB Close Loop Gain (Amp 2)G V (AMP2)f = 1.0KHz, R L = 32?-0.350+0.35dBOutput PowerP OV CC = 3.0V,
9、 R L = 6?, THD 10%V CC = 6.0V, R L = 32?, THD 10%V CC = 12V, R L = 100?, THD 10%55250400mWTotal Harmonic Distortion (f = 1.0KHz)THD V CC = 6.0V, R L = 32?, P O =125mWV CC 3.0V, R L = 8?, P O = 20mW V CC 12V, R L = 32?, P O = 200mW 0.50.50.6 1.0%Gain Bandwidth Product GBW1.5MHz Power Supply Rejection (V CC = 6.0V, ?V CC = 3.0V)PSRR C 1 = , C 2 = 0.01FC 1 =0.1F, C 2=0, f=1.0KHz C 1 = 1.0F, C 2 = 5.0F, f = 1.0KHz 501252dBMutingG V (MUTE)Mute = 2.0V, 1.0Khz f 20KHz 70dBR L = 16?R 1 = 75K ?Operating Current (R L = 0)KA8602B LOW VOLTAGE AUDIO AMPLIFIERKA8602B LOW VOLTAGE AUDIO AMPLIFIER