KE C SEMICONDUCTOR KIA6210AH TECHNICAL DATA BIPOLAR LINEAR INTEGRATED CIRCUIT 22W BTL DUAL AUDIO POWER AMPLIFIER A The thermal resistance @j-T KIA6210AH package s CPP-17(Compact Power Package 17pin), designed for low j | r] thermal resistance, has high efficiency of heat radiation. The temperature rise of chip can be reduced, and the influence from the degradation of the features due to the temperature rise at the high output can also be reduced. This stereo audio power IC, designed for car audio use, 7 has two built-in channels to reduce the characteristic IT WY A M x | 43 = Hl Wi oot d ys AAC D T P2 DIM MILLIMETERS difference between L and R channels. A 36.040.2 In addition, the functions of stand-by and muting, and aso a variety of protection circuits are involved. D 1240.1 d 0.55+0.1 Hi 10.0+0.3 FEATURES: wears TP * Low Thermal Resistance. Pi 2.0 > @j-T=1.5C/W (nfinite heat sink) Pe 2.0 . Q 3.9+0.2/-0 + High Power. S 30.0+0.2 > Pour(1)=22W(Typ.)/channel T 0.4+0.1/0.05 (Vec=14.4V, f=lkHz, THD=10%, R,=42) > Pour(2)=19W(Typ.)/channel CPP-17 (Vec=13.2V, f=l1kHz, THD=10%, Rr=42) + Low Distortion. : THD=0.04%(Typ.) (Vece=13.2V, f=1kHz, Pour=1W, Ri=42, Gy=50dB) - Low Noise. : Vyo=0.30mVims( Typ.) (Vec=13.2V, Rr=42, Gy=50dB, Rg=02, BW=20Hz ~ 20kHz) * Built-in stand-by function. (With @ pin set at low, power is turned OFF.) * Built-in muting function. (With @ pin set at low, Isn=luA(Typ.) power is turned OFF.) > V(Mute)=1V(Typ.) * Built-in various protection circuits Protection circuits : Thermal shut down, over voltage, OUTVecc short, OUT-GND short and OUT-OUT short. * Operating supply voltage * Vcc=9~18V. 1994. 10. 20 Revision No : 0 KEC viKIA6210AH MAXIMUM RATINGS (Ta=25T) CHARACTERISTIC SYMBOL RATING UNIT Peak Supply Voltage (0.2sec) Vcc surge 50 Vv DC Supply Voltage Veco DC 25 Vv Operating Supply Voltage Vec opr 18 Vv Output Current (Peak) Io(Peak) 9 A Power Dissipation Pp 50 W Operating Temperature Toor -30~85 C Storage Temperature Tog -5d~ 150 Cc ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Vec=13.2V, Ru=4@, f=lkHz, Ta=25) CHARACTERISTIC SYMBOL clRcar TEST CONDITION MIN. | TYP. | MAX.| UNIT Quiescent Supply Current Teca - Vin=0 - 120 250 mA Poura) - Voc=144V, THD=10% - 22 - Output Power W Poura) - THD=10% 16 19 - Total Harmonic Distortion THD Poct=1W - 0.04 0.4 % Voltage Gain Gy - - AS 50 52 dB Output Noise Voltage Vno - Rg=-02, BW=20Hz~ 20kHz - 0.30 | 0.70 | mVims Ripple Rejection Ratio R.R - frippe= 100Hz, Re=600 2 AQ 54 - dB Input Resistance Rin - - - 30 - kQ Output Offset Voltage V offset - Vin=0 -300 0 300 mV Current at Stand-by State Isp - - - 1 10 pA Cross Talk C.T - Rg=600 2, Vorr=0dBm - 60 - dB @ Pin Control Voltage Vsp - Stand-byOFF(Power-ON) 2.5 - Vec Vv @ Pin Control Voltage Vawwte) - Mute>ON (Power~OFF) - 1.0 2.0 Vv 1994. 10. 20 Revision No : 0 KEC 2/11KIA6210AH BLOCK DIAGRAM AND TEST CIRCUIT KIA6210AH (Gy=50dB) f O Vcc bb 6 28 9 10 17 0 1000uF C1 4.7uF & - 1000pF 2 = Wg S oO | + ay NF1 |Amp 3 = QQ oO (1) Mute SW ~PROTECTOR- ActiveHigh LOAD DUMP (PowerON) (6) Ripple THERMAL SHUT DOWN Vv SHORT CIRCUIT t : C1 4 + 4.7uF ol Amp tn (6 +] fe * PreGND Standby SW (5) (4) Le ActiveHigh 3V (Power-ON) Jl- 1994, 10. 20. Revision No : 0 KEC 3/11KIA6210AH CAUTIONS AND APPLICATION METHOD (Description is made only on the single channel.) 1. Voltage Gain Adjustment Amp2 CIN a_ Amp3 a" ) OUT pNP Re RL Amp4 >>(_) OUT \% 2120 3k0 Dy a Amp3,Amp4520dB + Amp1:PreAmp Amp3:Power Amp(FlatAmp) Amp2:Phase Amp Amp4:Power Amp(FlatAmp) Fig.t This IC has the amplifier construction as shown in Fig.l]. 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 Vcc is set to ON, this circuit can remarkably reduce the pop noise. The total closed loop gain Gv of this IC can be obtained by expression below when the closed loop voltage gain of Amp | is Gvl. R1+(R;+R2) Gy, = 20 log R;+R2 The closed loop voltage gain of POWER Amp (Amp 3 and 4) is fixed at Gy3= Gy4=20dB Therefore, the total closed circuit voltage gain Gv is obtained through BTL connection by the expression below. Gy=GyitGy3t6(dB) teeereeeeeneneeees (2) For example, when Rf=08, Gv is obtained by the expression (1) and (2) as shown below. Gy = 24+20+6+=30dB 1994. 10. 20 Revision No : 0 KEC 4/11KIA6210AH 60 The voltage gain is reduced when Rf is increased. (Fig.2) With the voltage gain reduced, since (1) 50 the oscillation stability is reduced, and foal (2) the pop noise changes when Vcc is ZS set to ON, refer to the items 3 and 4. & po 40 _ h ol a r yne [x] 30 O <q EY S > 20 0 {\ 0 300 500 1k 3k FEEDBACK RESISTANCE Rg (Q) Fig. 2 2. Stand-by SW Function By means of controlling @ pin (Stand-by terminal)to High and Low, the power Supply can be set to ON and OFF. The threshold voltage of @ pin is set at about 3V (Typ.), and the power supply current is about 1A(Typ.) at the stand-by state. TO bias Cutting Circuit (Fig.3) With (4) Pin set to High, Power is turned ON. 1994. 10. 20 Revision No : 0 KEC 5/11KIA6210AH @ pin control voltage : V(SB) Stand-By Power Vesna ON OFF O~2 OFF ON 3~Vec Advantage of Stand-by SW (1) Since Vee can directly be controlled to ON/OFF by the microcomputer, the switching relay can be omitted. (2) Since the control current is microscopic, the switching relay of small current capacity 1s satisfactory for switching. Large current capacity switch Relay rT TTT ~o= Battery ~~o-+ #= Battery Vcc Vcc From microcomputer i (Conventional Method) q Small current capacity switch Directly from Battery microcomputer Battery Standby Vcc Standby Vcc (Standby Switch Method) 1994. 10. 20 Revision No : 0 KEC 6/11KIA6210AH 3. 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. (1) Voltage gain to be used (Gv Setting) (2) Capacity value of condenser (3) Kind of condenser (4) Layout of printed board In case of its use with the voltage gain Gv reduced or with the feedback amount increased, care must be taken because the phase-inversion is caused by the high frequency resulting in making the oscillation lable generated. A, Input Offset Prevention Circuit At Vec?~ON Having Pre-Amp (Amp 1) mounted on the primary stage, this IC contains the circuit for making the Amp1 input voltage and the NF terminal voltage equipotential. Therefore, the offset voltage produced at the input stage is suppressed to prevent the pop noise at Vcc@ON. The capacity values of the input and NF condenser (C1 and C2) shall be set according to the gain to be used. (Reference) (A) At Gv=50dB (Rf=0 2) C1=4.7,F, C2=47.F (B) At Gv=40dB (Rf=470 2) C1=3.34F, C2=33,F 1994. 10. 20 Revision No : 0 KEC 7/11KIA6210AH 5. Muting Function Through setting pin (mute terminal) at about 1V or less, muting becomes possible. The interval circuit of IC is shown in Fig. 4. When @ pin is set to Low, Q1 and @2 are turned to ON, the charge of the ripple condenser is discharged and the bias is cut. The mute amount of 60dB or over can be obtained. Since this muting function rapidly discharges the charge of the ripple filter capacitor of pin, the pop noise is generated by the DC fluctuation of the bias section. Therefore, this muting function is not appropriate to the audio muting but is effective in muting at Vcc? ON. RF AL 8 a i | Mute R3 1 Q1 Power cL ON R1 T. OFF Re R1,R3=1k0 an R2=10k Fig.4 Mute Circuit 1994. 10. 20 Revision No : 0 KEC 8/11KIA6210AH 6. External Part List And Description. A CO INFLUENCE NAME RECOMM- OF ENDED OBJECT SMALLER THAN LARGER THAN REMARKS PART VALUE RECOMMENDED RECOMMENDED VALUE VALUE C 4.7 uF DC blockin, Related to pop noise at Vec>ON Related to gain. ' . 8 Pop , Refer to item 4. Related to pop noise at VccON. 4 Feedback C2 ATA condenser Determination of low cut-off frequency. 1 Ce on f.-Re Ripple Time constant is Time constant is Cs 220 pF ; i ti small at Vec?ON large at Vcc?ON eaucnon, or OFF. or OFF. C, 0.12uE Oscillation Made liable to Oscillation | Refer to item 3. Prevention oscillate. allowance improved. Ripple For filtering power supply hum and ripple. Cs 1000uF IPP Large at using AC rectified power supply. Filter " . " Small at using DC power supply. 1994. 10. 20 Revision No : 0 KEC 9/11KIA6210AH Pour Pp RL=2 DUAL OPE 0 10 20 30 OUTPUT POWER Pour (W)/CH R.R f 20 100 300 tk 3k 10k 30k MAXIMUM POWER DISSIPATION Pp MAX. (W) POWER DISSIPATION Pp (W) RIPPLE REJECTION RATIO R.R (dB) Pp MAX - Vcc Pp (MAX=50W) 0 8 10 12 14 16 20 SUPPLY VOLTAGE Vcc (V) Pp - Ta 80 INFINITE HEAT 70 ROJC=1.5C/W HEAT SINK 60 ROHS=3.5'C/W ROJC+ROHS=5'C/W 50 @ NO HEAT SINK ROJA=25'C/W 40 30 20 10 0 0 2 50 75 100 125 = 150 AMBIENT TEMPERATURE Ta ('C) R.R Rg 20 100 300 1k 3k 10k 30k 100k 1994. 10. 20 Revision No : 0 KEC 10/11KIA6210AH THD Pour(1) THD Pour(e) f=100Hz 0.01 0.103 1 3. 10 30 100 300 OUTPUT POWER Pour (W) 0.10.3 1 #38 10 30 100 300 OUTPUT POWER Pour (W) & & E20 = 20 10 F tolk 55 6 5 E 3 E 3 BO ae s 05 = 0.5 A 0.3 A 0.3 oO ovo Z 0.1 Z 0.1 S 0.05 S 0.05 3 0.03 % 0.03 x | << <= Be & o o B B THD - f Iccg - Vec 5 3 Vcc=13.2V 200 Rp=40 Poyt =1W 160 1 0.5 120 0.3 80 0.1 0.05 NG o S o a o 0.01 QUIESCENT CURRENT Iccq (mA) So 4 8 12 16 20 24 28 SUPPLY VOLTAGE Vcc (V) 20 100 300 1k 3k 10k 30k 100k FREQUENCY f (Hz) TOTAL HARMONIC DISTORTION THD (%) 1994. 10. 20 Revision No : 0 KEC 11/11