东芝 TA8276HQ 功放音效芯片技术资料(8)

汽车音响内置音效IC TA8276HQ 歌乐机头OEM芯片电路图技术资料

TA8276HQMaximum Ratings (Ta = 25°C)Characteristics Peak supply voltage (0.2 s) DC supply voltage Operation supply voltage Output current (peak) Power dissipation Operation temperature Storage temperature Symbol VCC (surge) VCC (DC) VCC (opr) IO (peak) PD (Note 5) Topr Tstg Rating 50 25 18 9 125 40~85 55~150 Unit V V V A W °C °CNote 5: Package thermal resistance θj-T = 1°C/W (typ.) (Ta = 25°C, with infinite heat sink) The absolute maximum ratings of a semiconductor device are a set of specified parameter values, which must not be exceeded during operation, even for an instant. If any of these rating would be exceeded during operation, the device electrical characteristics may be irreparably altered and the reliability and lifetime of the device can no longer be guaranteed. Moreover, these operations with exceeded ratings may cause break down, damage and/or degradation to any other equipment. Applications using the device should be designed such that each maximum rating will never be exceeded in any operating conditions. Before using, creating and/or producing designs, refer to and comply with the precautions and conditions set forth in this documents.Electrical CharacteristicsCharacteristics Quiescent current(unless otherwise specified, VCC = 13.2 V, f = 1 kHz, RL = 4 , Ta = 25°C)Symbol ICCQ POUT MAX (1) Output power POUT MAX (2) POUT (1) POUT (2) Total harmonic distortion Voltage gain Voltage gain ratio Output noise voltage THD GV GV VNO (1) VNO (2) Ripple rejection ratio Cross talk Output offset voltage Input resistance Stand-by current Stand-by control voltage R.R. C.T. VOFFSET RIN ISB VSB H VSB L Mute control voltage (Note 2) VM H VM L Mute attenuation ATT M Test Circuit VIN = 0 VCC = 14.4 V, max Power VCC = 13.7 V, max Power VCC = 14.4 V, THD = 10% THD = 10% POUT = 5 W VOUT = 0.775 Vrms (0 dBm) VOUT = 0.775 Vrms (0 dBm) Rg = 0 , DIN45405 Rg = 0 , BW = 20 Hz~20 kHz frip = 100 Hz, Rg = 620 Vrip = 0.775 Vrms (0 dBm) Rg = 620 VOUT = 0.775 Vrms (0 dBm) Stand-by condition Power: ON Power: OFF Mute: OFF Mute: ON, R1 = 10 k Mute: ON, VOUT = 7.75 Vrms (20 dBm) at Mute: OFF. 0 80 Test Condition Min 17 24 1.0 40 150 3.0 0 Typ. 200 35 31 23 20 0.02 26 0 0.12 0.10 50 65 0 90 2 Open 90 0.5 Max 400 0.2 28 dB 1.0 0.35 150 10 VCC 1.5 V dB mVrms dB dB mV k µA V % W Unit mANote 2: Muting function have to be controlled by open and low logic, which logic is a transistor, FET and µ-COM port of IMUTE > 250 µA ability.This means than the mute control terminal : pin 22 must not be pulled-up.82004-05-10

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