TA8256BH_02

TA8256BH TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8256BH Audio Power Amplifier 6 W × 3 Ch TA8256BH is 3 channel audio power amplifier for Consumer applications. This IC provides an output power of 6 watts per channel (at VCC = 20 V, f = 1 kHz, THD = 10%, RL = 8 Ω). It is suitable for power amplifier of TV and home Stereo. Features · · · · · · · · · High output power: Pout = 6 W (Typ.) (VCC = 20 V、RL = 8 Ω、f = 1 kHz、THD = 10%) Built-in audio muting circuit. NF terminal capacitor less : : Fixed gain (Gv = 34dB), needless external capacitor. Thermal shut down protection circuit, over voltage protection circuit Protectors Low poping noise High THD ratio High input dynamic range Available for using same PCB layout with 2 channel IC: TA8246AH Operating supply voltage range : VCC (opr) = 10~30 V (Ta = 25°C) Weight: 4.04 g (typ.) 1 2002-02-13 TA8256BH Block Diagram VCC 6 RIPPLE FILTER INPUT1 4 4 kW 30 kW Amp 1 9 OUT1 20 kW 8 350 W RL 20 kW 350 W INPUT2 2 4 kW 30 kW Amp 2 2.1 V 3 Pre-GND V18 PW-GND 10 RL OUT2 12 30 kW INPUT3 1 4 kW Amp 3 OUT3 20 kW 5 MUTE SW 7 11 RL 350 W MUTE T.C. 2 2002-02-13 TA8256BH Terminal Explanation Terminal No. Symbol Function Equivalent Circuit 1 IN3 1, 2, 4 4 kW VCC 20 kW 350 W 30 kW 2 IN2 Input IN OUT NF 4 IN1 GND 3 Pre-GND GND terminal ¾ VCC 5 MUTE SW 7 MUTE control terminal 5 10 kW to MUTE Amplifier 7 MUTE T.C. GND 10 kW 6 R/F Ripple filter 6 5.1 kW to POP-NOIZE preventive circuit to Bias circuit 8 OUT1 VCC 8, 11, 12 11 OUT3 Output 2.2 kW OUT 12 OUT2 GND 9 10 VCC PW-GND Supply voltage terminal GND terminal ¾ ¾ 3 2002-02-13 TA8256BH Cautions This IC is not proof enough against a strong E-M field by CRT which may cause malfunction such as leak. Please set the IC keeping the distance from CRT. Maximum Ratings (Ta = 25°C) Characteristic Supply voltage Output current (peak/ch) Power dissipation Operating temperature Storage temperature Symbol VCC IO (peak) PD (Note) Topr Tstg Rating 30 2 25 -20~75 -55~150 Unit V A W °C °C Note: Derated above Ta = 25°C in the proportion of 200 mW/°C. Electrical Characteristics Characteristic Quiescent current Output power (Unless otherwise specified, VCC = 20 V, RL = 8 W, Rg = 620 W, f = 1 kHz, Ta = 25°C) Symbol ICCQ Pout (1) Pout (2) THD (1) Total harmonic distortion THD (2) Voltage gain Input resistance Ripple rejection ratio Output noise voltage Cross talk Mute control voltage Mute attenuation level Gv RIN R.R. Vno C.T. Vth (ON) Vth (OFF) ATT Test Circuit ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ Vin = 0 THD = 10% THD = 1% Pout = 2 W Pout = 2 W, f = 10 kHz, Vout = 0.775 Vrms ¾ f = 100 Hz, Vripple = 0.775 Vrms Rg = 10 kW, BW = 20 Hz~20 kHz Vout = 0.775 Vrms MUTE ON MUTE OFF Vout = 0.775 Vrms ® Mute Test Condition Min. 65 5 ¾ ¾ ¾ 32.5 ¾ -40 ¾ ¾ 3.1 0 -52 Typ. 100 6 4.5 0.04 0.1 34 34 -47 0.14 -60 ¾ ¾ -60 Max 180 ¾ ¾ 0.2 % 0.6 35.5 ¾ ¾ 0.3 ¾ VCC 2.5 ¾ dB dB kW dB mVrms dB V Unit mA W 4 2002-02-13 TA8256BH Test Circuit 6 RIPPLE FILTER INPUT1 1.0 mF 4 4 kW 30 kW Amp 1 9 1000 mF 100 mF VCC 1000 mF 2.2 W OUT1 20 kW 8 0.10 mF 0.10 mF 1000 mF 1000 mF 0.10 mF 350 W RL 350 W INPUT2 1.0 mF 2 4 kW 30 kW Amp 2 OUT2 12 1.0 mF 30 kW INPUT3 1 4 kW Amp 3 2.2 W OUT3 20 kW 5 10 mF MUTE SW 7 11 2.2 W 20 kW 2.1 V 3 Pre-GND V18 PW-GND 10 RL RL 350 W MUTE T.C. 5 2002-02-13 TA8256BH ICCQ, Vout (DC) – VCC 300 30 10 VCC = 20 V 5 Pout = 2 W 3 RL = 8 W 1 THD – f (%) ICCQ (mA) (V) Total harmonic distortion 200 Vout (DC) 20 Output voltage Vout (DC) THD 0.5 0.3 Quiescent current ICCQ 100 10 0.1 0.05 0.03 0.01 30 0 0 4 8 12 16 20 24 28 32 0 36 100 300 1k 3k 10 k 30 k 100 k Frequency f (Hz) Supply voltage VCC (V) THD – Pout 30 VCC = 20 V RL = 8 W 10 10 30 f = 1 kHz RL = 8 W THD – Pout 5 5 (%) 3 (%) 3 VCC = 12 V 20 28 THD Total harmonic distortion 0.5 0.3 Total harmonic distortion 1 THD 1 0.5 0.3 0.1 f = 10 kHz 0.1 0.05 0.03 f = 1 kHz 0.05 0.03 f = 100 Hz 0.01 0.3 0.5 1 3 5 10 30 0.01 0.3 0.5 1 3 5 10 30 Output Power Pout (W) Output Power Pout (W) 6 2002-02-13 TA8256BH Pout – VCC f = 1 kHz 18 RL = 8 W THD = 10% 16 20 70 VCC = 20 V 60 Vout = 0.775 Vrms RL = 8 W Gv – f Pout (W) (dB) Gv Voltage gain 14 12 10 8 6 4 50 40 30 Output power 20 10 2 0 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 0 30 100 300 1k 3k 10 k 30 k 100 k Supply voltage VCC (V) Frequency f (Hz) R.R. – f VCC = 20 V RL = 8 W -10 R = 0 g Vripple = 0.775 Vrms -20 -30 -40 -50 -60 -70 0 VCC = 20 V RL = 8 W -10 V out = 0.775 Vrms Rg = 10 kW -20 -30 -40 -50 -60 -70 0 C.T. – f Ripple rejection ratio R.R. (dB) 30 100 Cross talk C.T. (dB) 300 1k 3k 10 k 30 k 100 k 30 100 300 1k 3k 10 k 30 k 100 k Frequency f (Hz) Frequency f (Hz) Vno – Rg 1.6 VCC = 20 V 1.4 RL = 8 W BW = 20 Hz~20 kHz 1.2 1.0 0.8 0.6 0.4 0.2 0 30 100 300 1k 3k 10 k 30 k 100 k VCC = 20 V RL = 8 W -10 f ripple = 100 Hz Vripple = 0.775 Vrms -20 -30 -40 -50 -60 -70 0 R.R. – Rg (mVrms) Output noise voltage Ripple rejection ratio R.R. (dB) Vno 30 100 300 1k 3k 10 k 30 k 100 k Signal source resistance Rg (9) Signal source resistance Rg (9) 7 2002-02-13 TA8256BH C.T. – Rg VCC = 20 V f = 1 kHz -10 R = 8 W L Vout = 0.775 Vrms -20 -30 -40 -50 -60 -70 0 18 Dual 16 f = 1 kHz RL = 8 W 14 12 V CC = 28 V 10 8 20 V 6 4 12 V 2 0 0 PD – Pout C.T. (dB) PD (W) THD = 1% 10% 30 100 Power dissipation Cross talk 300 1k 3k 10 k 30 k 100 k 2 4 6 8 10 12 14 16 Signal source resistance Rg (9) Output power Pout (W) PD MAX – VCC (W) 20 18 16 14 12 10 8 6 4 2 0 8 12 16 20 24 28 32 f = 1 kHz RL = 8 W 180 160 VCC = 20 V Vin = 0 ICCQ – Ta Maximum power dissipation PD (max) ICCQ (mA) Quiescent current 140 120 100 80 60 40 20 0 -40 -20 0 20 40 60 80 100 Supply voltage VCC (V) Ambient temperature Ta (°C) Vno – Ta 0.8 10 THD – Ta 5 3 VCC = 20 V RL = 8 W f = 1 kHz Pout = 2 W Dual (mVrms) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -40 THD (%) VCC = 20 V Rg = 10 kW Vno 1 0.5 0.3 Output noise voltage Total harmonic distortion -20 0.1 0.05 0.03 0 20 40 60 80 100 0.01 -40 -20 0 20 40 60 80 100 Ambient temperature Ta (°C) Ambient temperature Ta (°C) 8 2002-02-13 TA8256BH PD MAX – Ta (W) 30 1: Infinite heat sink 1 25 2: 4.1°C/W heat sink 3: 9.5°C/W heat sink Allowable power dissipation PD MAX 20 2 15 3 10 5 0 0 25 50 75 100 125 150 175 200 Ambient temperature Ta (°C) 9 2002-02-13 TA8256BH Package Dimensions Weight: 4.04 g (typ.) 10 2002-02-13 TA8256BH 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. 11 2002-02-13