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| TA8264AH TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8264AH Max Power 41 W BTL x 4 ch Audio Power IC The TA8264AH is 4 ch BTL audio power amplifier for car audio application. This IC can generate more high power: POUTMAX = 41 W as it is included the pure complementary PNP and NPN transistor output stage. It is designed low distortion ratio for 4 ch BTL audio power amplifier, built-in stand-by function, muting function, and diagnosis circuit which can detect output to VCC/GND short and over voltage input mode. Additionally, the AUX amplifier and various kind of protector for car audio use are built-in. Weight: 7.7 g (typ.) Features * High power : POUTMAX (1) = 41 W (typ.) (VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 ) : POUTMAX (2) = 37 W (typ.) (VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 ) : POUT (1) = 24 W (typ.) (VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 ) : POUT (2) = 21 W (typ.) (VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 ) * * * * * * * * * Built-in diagnosis circuit (pin 25) Low distortion ratio: THD = 0.02% (typ.) (VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 ) Low noise: VNO = 0.18 mVrms (typ.) (VCC = 13.2 V, Rg = 0 , GV = 34dB, BW = 20 Hz~20 kHz) Built-in stand-by switch function (pin 4) Built-in muting function (pin 22) Built-in AUX amplifier from single input to 2 channels output (pin 16) Built-in various protection circuit : Thermal shut down, over voltage, out to GND, out to VCC, out to out short, speaker burned Operating supply voltage: VCC (opr) = 9~18 V 1 2002-02-13 TA8264AH Block Diagram C5 1 TAB 20 VCC1 6 VCC2 OUT1 (+) 9 C1 11 IN1 PW-GND1 8 OUT1 (-) 7 RL OUT2 (+) 12 IN2 5 RL C1 PW-GND2 2 OUT2 (-) 3 C6 16 AUX IN OUT3 (+) 15 IN3 17 RL C1 PW-GND3 18 OUT3 (-) 19 OUT4 (+) 14 IN4 21 RL C1 PW-GND4 24 OUT4 (-) 23 PRE-GND 13 RIP 10 C2 STBY 4 DIAGNOSIS OUT MUTE 25 22 R1 C4 : PRE-GND : PW-GND C3 2 2002-02-13 TA8264AH Caution and Application Method (Description is made only on the single channel.) 1. Voltage Gain Adjustment This IC has no NF (negative feedback) terminals. Therefore, the voltage gain can't adjusted, but it makes the device a space and total costs saver. Amp. 2A Amp. 1 Input Amp. 2B Figure 1 Block Diagram The voltage gain of Amp.1 : GV1 = 8dB The voltage gain of Amp.2A, B : GV2 = 20dB The voltage gain of BLT Connection : GV (BTL) = 6dB Therefore, the total voltage gain is decided by expression below. GV = GV1 + GV2 + GV (BTL) = 8 + 20 + 6 = 34dB 2. Stand-by SW Function (pin 4) By means of controlling pin 4 (stand-by terminal) to high and low, the power supply can be set to ON and OFF. The threshold voltage of pin 4 is set at about 3VBE (typ.), and the power supply current is about 2 mA (typ.) at the stand-by state. VCC ON Power OFF 4 10 kW 2VBE to BIAS CUTTING CIRCUIT Control Voltage of pin 4: VSB Stand-by ON OFF Power OFF ON VSB (V) 0~1.5 3~VCC Figure 2 With pin 4 set to High, Power is turned ON Adjustage of Stand-by SW (1) (2) Since VCC can directly be controlled to ON or OFF by the microcomputer, the switching relay can be omitted. Since the control current is microscopic, the switching relay of small current capacity is satisfactory for switching 3 2002-02-13 TA8264AH Large current capacity switch BATTERY RELAY BATTERY VCC VCC - Conventional Method - FROM MICROCOMPUTER Small current capacity switch BATTERY DIRECTLY FROM MICROCOMPUTER BATTERY Stand-By VCC Stand-By VCC - Stand-by Switch Method - Figure 3 3. Muting Function (pin 22) By means of controlling pin 22 less than 0.5 V, it can make the audio muting condition. The muting time constant is decided by R1 and C4 and these parts is related the pop noise at power ON/OFF. The series resistance; R1 must be set up less than 10 kW to get enough muting attenuation. The muting function have to be controlled by a transistor, FET and micro-controller port which has IMUTE > 250 mA ability. Pin 22 terminal voltage has the temperature characteristics of 4.6 V (low temperature) to 3.2 V (high temperature). Therefore, it is need to design with attention as using the micro-controller of which operating voltage is less than 5 V. Terminal 22 may not be pulled up and shall be controlled by OPEN/LOW. When it is obliged to do, it must be pulled up via diode, because it has to defend flowing reverse current to internal circuit of pin 22. 20 I (100 mA) IMUTE (OFF) 22 C4 R1 A (dB) 10 kW 0 5 kW Mute attenuation ATT IMUTE VMUTE -20 -40 -60 -80 -100 0 0.4 0.8 1 1.2 1.6 2 VCC = 13.2 V Po = 10 W PL = 4 W f = 1 kHz 2.4 2.8 3 I (100 mA) IMUTE (OFF) 22 C4 R1 IMUTE VMUTE Point A voltage: VMUTE (V) Figure 4 Muting Function Figure 5 4 Mute Attenuation - VMUTE (V) 2002-02-13 TA8264AH 4. AUX Input (pin 16) The pin 16 is for input terminal of AUX amplifier. The total gain is 0dB by using of AUX amplifier. Therefore, the m-COM can directly drive the AUX amplifier. BEEP sound or voice synthesizer signal can be input to pin 16 directly. When AUX function is not used, this pin must be connected to PRE-GND (pin 13) via a capacitor. 20dB AMP. IN OUT (+) OUT (-) AUX AMP m-COM AUX-IN 16 -20dB Figure 6 5. AUX Input Diagnosis Output (pin 25) This diagnosis output terminal of pin 25 has open collector output structure on chip as shown in Figure 7. In case diagnosis circuit that detect unusual case is operated, NPN transistor (Q1) is turned on. It is possible to protect all the system of apparatus as well as power IC protection. In case of being unused this function, use this IC as open-connection on pin 25. 5V 25 5V OUTPUT SHORT PROTECTOR OVER VOLTAGE PROTECTOR Q1 GND t Q1 is turned on pin 25: Open collector output (active low) Figure 7 5.1 Self Diagnosis Output In Case of Shorting Output to VCC/GND or Over Voltage Power Supplied NPN transistor (Q1) is turned on. Threshold of over voltage protection: VCC = 22 V (typ.) 5V m-COM LED/LCD ALARM (Flashing) (Announcement from a speaker.) (Relay OFF) 25 REGULATOR OFF MEMORY (Count and record) Figure 8 5.2 In Case of Shorting Output to Output Application 1 NPN transistor (Q1) is turned on and off in response to the input signal voltage. 5 2002-02-13 TA8264AH 6. Prevention of speaker burning accident (In Case of Rare Short Circuit of Speaker) When the direct current resistance between OUT + and OUT - terminal becomes 1 W or less and output current over 4 A flows, this IC makes a protection circuit operate and suppresses the current into a speaker. This system makes the burning accident of the speaker prevent as below mechanism. Current into a speaker Operating point of protector Less than 4 W About 1 W 4W Speaker impedance Figure 9 Note 1: It is appeared by biased input DC voltage (for example, large leakage of the input capacitor, short-circuit between copper patterns of PCB.) 6 2002-02-13 TA8264AH 6.1 Applications When output terminals short-circuit to VCC or GND, the voltage of 25pin is fixed to "L". And when shorting OUT + to OUT -, "L" and "H" are switched according to an input signal. Therefore, it is possible to judge how the power IC condition is if a micro-controller detects the 25pin voltage that is smoothed out with LPF. It is recommend that the threshold voltage (Vth) is set up as higher as possible because output level of LPF is changed according to an input signal. (for example, Vth is set up to 4 V if 25pin is pulled up to 5 V line.) Output voltage of L.P.F. Operating point of protector 5V Output power Figure 10 7 2002-02-13 TA8264AH Maximum Ratings (Ta = 25C) 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 2) Topr Tstg Rating 50 25 18 9 125 -40~85 -55~150 Unit V V V A W C C Note 2: Package thermal resistance qj-T = 1C/W (typ.) (Ta = 25C, with infinite heat sink) Electrical Characteristics Characteristics Quiescent current (unless otherwise specified VCC = 13.2 V, f = 1 kHz, RL = 4 9, Ta = 25C) 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 DGV 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 3) VM H VM L Mute attenuation ATT M Test Circuit 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 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 (0dBm) VOUT = 0.775 Vrms (0dBm) Rg = 0 W, DIN45405 Rg = 0 W, BW = 20 Hz~20 kHz frip = 100 Hz, Rg = 620 W Vrip = 0.775 Vrms (0dBm) Rg = 620 W VOUT = 0.775 Vrms (0dBm) 3/4 3/4 Stand-by condition Power: ON Power: OFF Mute: OFF Mute: ON, R1 = 10 kW Mute: ON, VOUT = 7.75 Vrms (20dBm) at Mute: OFF. 0 80 Test Condition Min 3/4 3/4 3/4 3/4 19 3/4 32 -1.0 3/4 3/4 40 3/4 -150 3/4 3/4 3.0 0 Typ. 200 41 37 24 21 0.02 34 0 0.20 0.18 50 60 0 30 2 3/4 3/4 Open 3/4 90 0.5 3/4 Max 400 3/4 3/4 3/4 3/4 0.2 36 dB 1.0 3/4 0.42 3/4 3/4 +150 3/4 10 VCC 1.5 3/4 V dB dB dB mV kW mA V mVrms % W Unit mA Note 3: Muting function have to be controlled by open and low logic, which logic is a transistor, FET and m-COM port of IMUTE > 250 mA ability. This means than the mute control terminal : pin 22 must not be pulled-up. 8 2002-02-13 TA8264AH Test Circuit 1 TAB 20 VCC1 6 VCC2 OUT1 (+) 9 0.22 mF C1 11 IN1 PW-GND1 8 OUT1 (-) 7 RL OUT2 (+) 0.22 mF C1 12 IN2 5 RL PW-GND2 2 OUT2 (-) 3 0.22 mF C6 16 AUX IN OUT3 (+) 0.22 mF C1 15 IN3 17 RL PW-GND3 18 OUT3 (-) 19 OUT4 (+) 0.22 mF C1 14 IN4 21 RL PW-GND4 24 OUT4 (-) 23 PRE-GND 13 RIP 10 10 mF C2 STBY 4 DIAGNOSIS OUT MUTE 25 22 10 kW R1 C4 1 mF 3900 mF : PRE-GND : PW-GND C3 0.1 mF C5 9 2002-02-13 TA8264AH T.H.D - POUT 100 VCC = 13.2 V RL = 4 W 100 f = 1 kHz RL = 4 W T.H.D - POUT (%) 10 (%) Total harmonic distortion T.H.D 10 Total harmonic distortion T.H.D 1 10 kHz 1 0.1 100 Hz 1 kHz 9.0 V 0.1 13.2 V 16.0 V 0.01 0.1 1 10 100 0.01 0.1 1 10 100 Output power POUT (W) Output power POUT (W) ICCQ - VCC 400 1 T.H.D - f (%) T.H.D 0.1 RL = (mA) VIN = 0 300 ICCQ OUT3 200 Total harmonic distortion Quiescent current OUT2, 3 OUT4 0.01 100 VCC = 13.2 V RL = 4 W Pout = 5 W 0.001 10 100 1k 10 k 100 k 0 0 10 20 30 Power supply voltage VCC (V) Frequency f (Hz) 10 2002-02-13 TA8264AH VNO - Rg 300 0 VCC = 13.2 V -10 -20 -30 -40 -50 -60 -70 10 RL = 4 W Rg = 620 W Vrip = 0dBm R.R. - f (mVrms) 200 Output noise voltage 150 100 50 0 10 100 1k 10 k Ripple rejection ratio R.R. (dB) VCC = 13.2 V RL = 4 W 250 BW = 20 Hz~20 kHz VNO 100 k 100 1k 10 k 100 k Singnal source resistance Rg (9) Frequency f (Hz) C.T. - f (OUT1) 0 VCC = 13.2 V -10 RL = 4 W VOUT = 0dBm -10 0 VCC = 13.2 V RL = 4 W VOUT = 0dBm Rg = 620 W C.T. - f (OUT2) C.T. (dB) -20 -30 -40 -50 C.T. (dB) Cross talk OUT1 (R) OUT2, 3, 4 Rg = 620 W -20 -30 -40 -50 Cross talk OUT2 (R) OUT1, 3, 4 -60 -70 10 -60 -70 10 100 1k 10 k 100 k 100 1k 10 k 100 k Frequency f (Hz) Frequency f (Hz) C.T. - f (OUT3) 0 VCC = 13.2 V -10 RL = 4 W VOUT = 0dBm -10 0 VCC = 13.2 V RL = 4 W VOUT = 0dBm Rg = 620 W C.T. - f (OUT4) C.T. (dB) -20 -30 -40 -50 -60 -70 10 C.T. (dB) Cross talk OUT3 (R) OUT4 OUT3 (R) OUT1, 2 Rg = 620 W -20 -30 -40 -50 -60 -70 10 Cross talk OUT4 (R) OUT1, 2, 3 100 1k 10 k 100 k 100 1k 10 k 100 k Frequency f (Hz) Frequency f (Hz) 11 2002-02-13 TA8264AH GV - f 40 35 70 60 PD - POUT (dB) 30 25 20 15 10 VCC = 13.2 V 5 0 10 RL = 4 W VOUT = 0dBm (W) GV PD 50 40 13.2 V 30 20 9V 10 0 16 V Power dissipation Voltage gain f = 1 kHz RL = 4 W 0 5 10 15 20 25 100 1k 10 k 100 k Frequency f (Hz) Output power POUT/ch (C) PD MAX - Ta 120 (W) INFINITE HEAT SINK RqJC = 1C/W HEAT SINK (RqHS = 3.5C/W) RqJC + RqHS = 4.5C/W NO HEAT SINK RqJA = 39C/W Allowable power dissipation PD MAX 100 80 60 40 20 0 0 25 50 75 100 125 150 Ambient temperature Ta (C) 12 2002-02-13 TA8264AH Package Dimensions Weight: 7.7 g (typ.) 13 2002-02-13 TA8264AH RESTRICTIONS ON PRODUCT USE 000707EBF * TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * This product generates heat during normal operation. However, substandard performance or malfunction may cause the product and its peripherals to reach abnormally high temperatures. The product is often the final stage (the external output stage) of a circuit. Substandard performance or malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the product. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice. 14 2002-02-13 This datasheet has been download from: www..com Datasheets for electronics components. |
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