TOSHIBA TA8201AK TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA8201AK BTL AUDIO POWER AMPLIFIER The TA8201AK is audio power amplifier for consumer application. This IC is applying BTL system in which output coupling condenser and bootstrap condenser are not necessary and output 17W (Vcc = 14.4V, BL =40, THD =10%) can be obtained. Since the package is a 7 pin SIP, (Single Inline Package), it greatly simplifies construction of a power amplifier both in design and assembly. It also contains various kind of protector. It is suitable for car-audio power amplifier with high HSIP7-P-2.54B performance. Weight : 2.19g (Typ.) FEATURES @ High Power: PQuT(1)=17W (Typ.) (Vcc = 14.4V, f= 1kHz, THD = 10%, RL =40) POUT (2) = 14W (Typ.) (Vcc = 13.2V, f=1kHz, THD =10%, RL =40) @ Very Few External Parts @ Built in Protector Circuit Thermal Shut Down, Over Voltage Protector (Typ. Vcc = 24V) ASO Protector (RL Short, Out to GND, Out to Vcc) @ 7pin Small Package @ Operating Supply Voltage Range : Vcc =9~18V 961001EBF1 @ TOSHIBA is continually working to improve the quality and the 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 observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product 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 products specifications. Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook. @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 foreign exchange and foreign trade control 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. 1997-09-02 1/8TOSHIBA TA8201AK BLOCK DIAGRAM Vi OS ss R.F. T vec 1 4 PROTECTOR ct ! BIAS out-1 - p+ IN 7) IN 4 1 + PRE Z AMP FLAT 5) Amp OUT-2 Sen st a DIRECTIONS FOR USE AND APPLICATION METHOD 1. VOLTAGE GAIN ADJUSTMENT oe Sa Amp 3, Amp 4=20dB Ww - Amp 1: Pre-Amp. Amp 3: Power-Amp. (Flat-Amp.) Amp 2: Phase Amp. Amp 4: Power-Amp. (Flat-Amp.) (Fig.1) This IC has the amplifier construction as shown in Fig.1. The Pre-Amp. Amp 1 is provided to the primary stage, and the input voltage is amplified by the Flat Amps, Amp 3 and Amp 4 of each channel through the phase Amp. Amp 2. Since the input offset is prevented by Pre-Amp when Vcc is set to ON, this circuit can remarkably reduce the pop noise. The total closed loop gain Gy of this IC can be obtained by expression below when the closed loop voltage gain of Amp 1 is Gy4. R1+ (Rf+R2) Gy1 = 20f0g ~ Re+R2 (dB) wee (1) The closed loop voltage gain of POWER Amp, Amp 3 and Amp 4 is fixed at Gy3=Gyq = 20aB. Therefore, the total closed circuit voltage gain Gy is obtained through BTL connection by the expression below. Gy =Gy1+Gy3+6 (dB) ............. (2) 1997-09-02 2/8TOSHIBA TA8201AK For example, when R=00, Gy is obtained by the expression below. Gy=28 +20+6=54 (dB) The voltage gain is reduced when R is increased. (Fig.2) With the voltage gain reduced, since @ the oscillation stability is reduced, and @ the pop noise changes when Vcc is set to ON, refer to the items 2 and 4. VOLTAGE GAIN Gy (dB) 0 200 500 1k 3k FEEDBACK RESISTANCE Rf (Q) (Fig.2) 2. CAPACITIVE VALUE OF INPUT AND NF CAPACITOR This IC has the built-in circuit which makes the input voltage of AMP. 1 and the voltage of NF terminal equal at Vcc->ON by means of providing the pre-AMP (AMP 1) at the first stage. Therefore, the off-set voltage produced at the first stage is suppressed, and the pop noise is prevented. Set the capacitive value of input and NF capacitor according to the gain to be used. [Reference] (A) At Gy=54dB (R=0) Cin =4.7 uF, Cup =47 uF (B) At Gy=40dB (R=5600) Cy =3.3 uF, Cyr =33/F 3. CAPACITANCE OF RIPPLE FILTER CAPACITOR The capacitance of the ripple filter capacitor of @ pin determines the time constant at Vcc-ON and Vcc OFF. Since the pop noise varies according to the capacitance of the ripple filter capacitor, C3 =220F recommended. Having the built-in rapid discharging circuit of Ripple and NF voltage at the time when Vcc>OFF, this IC is effective for preventing the pop noise of Vcc continuous ON/OFF. 1997-09-02 3/8TOSHIBA TA8201AK 4. PREVENTIVE MEASURE AGAINST OSCILLATION For preventing the oscillation, it is advisable to use C4, the condenser of polyester film having small characteristic fluctuation of the temperature and the frequency. The resistance R to be series applied to C4 is effective for phase correction of high frequency, and improves the oscillation allowance. Since the oscillation allowance is varied according to the causes described below, perform the temperature test to check the oscillation allowance. @ Voltage gain to be used (Gy setting) @ Capacity value condenser @ Kind of condenser @ Layout of printed board By increasing R, decrease of Gy is possible. However, care must be taken since the feedback increase is liable to produce oscillation. 5. EXTERNAL PART LIST AND DESCRIPTION NAME INFLUENCE of [RECOMMENDED ga yecr SMALLER THAN LARGER THAN REMARKS PART VALUE RECOMMENDED RECOMMENDED VALUE VALUE C1 4.7 pF Dc blocking | Related to popping noise at Vcc->ON Related to gain. Refer to item 2. Related to popping noise at Vcc-ON c2 47 pF Feedback Determination of low cut-off frequency. condenser 1 C2 = _ 2xf_- Re Ripple Time constant is Time constant is C3 220 uF ppre small at Vcc ON |large at Vcc-ON or | Refer to item 3. reduction or OFF. OFF. Oscillation Made liable to Oscillation allowance . C4 0.15 uF . Refer to item 4. prevention oscillate. improved. Ripple For filtering power supply hum and ripple. c5 1000 F filter Large at using AC rectified power supply. Small at using DC power supply. 1997-09-02 4/8TOSHIBA TA8201AK MAXIMUM RATINGS (Ta = 25C) CHARACTERISTIC SYMBOL RATING UNIT Peak Supply Voltage (0.2 sec) | Vcc (surge) 50 Vv DC Supply Voltage Vcc (DC) 25 Vv Operating Supply Voltage VCC (opr) 18 Vv Output Current (Peak) 10 (peak) 4.5 A Power Dissipation Pp 15 Ww Operating Temperature Topr -30~85 C Storage Temperature Tstg -55~150 C ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Vcc = 13.2V, RL =40, f= 1kHz, Ta=25C ) TEST CHARACTERISTIC SYMBOL | CIR- TEST CONDITION MIN. | TYP. | MAX. | UNIT CUIT Quiescent Current IccQ |Vin=O0 60 95] mA POUT (1) |Vcc=14.4V, THD = 10% _ 17 | Ww Output Power POUT (2) TTHD=10% 10 14 |. Total Harmonic 3 Distortion THD |PouT=1W 0.05 0.4 % Voltage Gain Gy |Re=00 52 54 56] dB Output Noise Voltage VNO |Rg=10kQ, BW =20Hz~20kHz | 0.9 2.0 |MVrms Ripple Rejection Ratio R.R. | fripple = 100Hz, Rg = 6000 40 50; dB Input Resistance Rin |f=1kHz 30}; kQ. Output Offset Voltage Voffset |Vin=0 -0.3 0 03] V TYPICAL DC VOLTAGE OF EACH TERMINAL (Vcc =13.2V. Vin =OV. Ta=25C) TERMINAL No. 1 2 3 4 5 6 7 Terminal IN NF R.F GND OUT Vcc OUT DC Voltage (V) 4.55 4.55 4.55 0 5.6 13.2 5.6 TEST CIRCUIT/ APPLICATION CIRCUIT OV oO s|- cc 1 RF. T vec 3 2 oat 3 PROTECTOR ~ N |! BIAS OUT-1 2 IN CAR wi 0.15 uF 2.20 0.154F 2.2 Jw 1997-09-02 5/8TOSHIBA TA8201AK THD - PouT Vec=13.2V RL =40, (%) f= 10kHz TOTAL HARMONIC DISTORTION THD 2 05 1 3 5 10 30 50 100 OUTPUT POWER PouT (W) E > Vec=13.2V RL =40, BW = 20Hz~20kHz > tu 9 < 5 3 > Lu 2 Qo 2 kK = & 40 > 100 300 1k 3k 10k 30k 100k SIGNAL SOURSE RESISTANCE Rg (Q) Gy - f CC= 13.2V RL =4Q, = OUT =0.775Vims 3 {0dBm) > 9 = <t oO ua g <t EB ot S 100 300 1k 3k 10k 30K =: 100k FREQUENCY f (Hz) TOTAL HARMONIC DISTORTION THD (%) (dB) RIPPLE REJECTION RATIO RR. Pout (W) OUTPUT POWER THD PouT 2 O05 1 3.5 10 30 50 100 QUTPUT POWER Pout (W) R.R. - f Vec=13.2V RL =4Q, Vripple =0.775Vrms (QdBm) Rg = 6002 100 300 1k 3k 10k 30k 100k FREQUENCY f (Hz) Pout - f Vec=13.2V RL =4Q, THD = 10% 100 300 1k 3k 10k 30k 100k FREQUENCY f (Hz) 1997-09-02 6/8TOSHIBA TA8201AK PD - Pout Pp ~ Pout f=1kHz Vec=13.2V s s RL =20, cc a a 1 a nu = a 9 Qo 4 E E < <f & 2 S B a a a a ty ta $s Ss Q Q a oa 4 8 12 16 20 24 28 0 4 8 12 16 20 24 28 OUTPUT POWER PoyT (W) OUTPUT POWER PoyT (W) Pp MAX. - Vcc Iccq. Veenter - Vcc f=1kHz ~ 1 < Veenter 2 S ~ 6 - < < g 5 a Y o> 7 = oS KE > io Z 52 S23 58 Qs 3 28 =f 5 S> 3 4 G x 2 a 5 D> = 3 a 0 4 8 12 16 20 24 28 0 4 & 12 16 20 24 SUPPLY VOLTAGE Vcc (V) SUPPLY VOLTAGE Vcc (V) Pp MAX. - Ta @ INFINITE HEAT SINK @ 7C/W A HEAT SINK @ 12C/W A HEAT SINK @ NO HEAT SINK (Ww) ALLOWABLE POWER DISSIPATION Pp MAX. 0 25 50 75 100 125 150 175 AMBIENT TEMPERATURE Ta (C) 1997-09-02 7/8TOSHIBA TA8201AK OUTLINE DRAWING HSIP7-P-2.54B Unit : mm 16.020.2 G 3,240.2 3.04 & Oo Nd fd WX WY fi. 12.940.3 16.240.3 14.440.3 1.6MIN 0.540.2 at 5,540.3 | 240. HL EE a Qo oe io 0.88TYP 40.1 1,240.2 0.6+0.1 $2.08 * TT 20.25 My 1.240.1 17.0+0.2 ; 1 ? Weight : 2.19g (Typ.) 1997-09-02 8/8