_KEC SEMICONDUCTOR KIA6210AH KOREA ELECTRONICS CO, LTD. TECHNICAL DATA BIPOLAR LINEAR INTEGRATED CIRCUIT 22W BTL DUAL AUDIO POWER AMPLIFIER A 5 B The thermal resistance @j-T KIA6210AH package thermal resistance, has high efficiency of heat radiation. a The temperature rise of chip can be reduced, and the ili WU { influence from the degradation of the features due to the the Le at temperature rise at the high output can also be reduced. Pa This stereo audio power IC, designed for car audio use, has two built-in channels to reduce the characteristic 5.04 0.8 difference between L and R channels. 14.14 0.2 Leto. In addition, the functions of stand-by and muting, and a variety of protection circuits are imvolved. CPP-17(Compact Power Package 17pin), designed for low L a 7 a ae g = a ft fom fe O.55t 0.1 10.C+ 0.3 17.040.3 L 5040.3 M 2.575 TYP. Fi 20 Pz 2.0 FEATURES: q 3.9+0.2/-0 - Low Thermal Resistance. Teast aes > @j-T=1L.5T/W Cnfinite heat sink) - High Power. CPP-17 > Pourtl)=22W (Typ. )/channel (Vec=14.4V, f=lkHz, THD=10%, Rr=4 22) > Pour(2)=19W(Typ.)/channel (Vec=13.2V, f=lkHz, THD=10%, Rp=4 2) - Low Distortion. > THD=0.04%( Typ.) (Vec=13.2V, f=lkHz, Pout=LW, Rr=4@, Gy=50dB) : Low Noise. > Vyor0.30mVime( Typ.) (Vec=13.2V, Ri=4@, Gy=50dB, Re=0@, BW=20Hz~20kHz) - Built-in stand-by function. (With @ pin set at low, power is tumed OFF.) + Built-in muting function. (With @ pin set at low, Iss=l4A(Typ.) power is tumed OFF.) > V(Mute)=1V(Typ.) - Built-in various protection circuits Protection circuits : Thermal shut down, over voltage, GUT Vee short, OUT-GND short and OUT-OUT short. + Operating supply voltage > Vec=9~18V. z faa 03 1994, 10, 20 Revision No : 0 KEC VlKIA6210AH MAXIMUM RATINGS (Ta=25T) CHARACTERISTIC SYMBOL RATING UNIT Peak Supply Voltage (0.2sec) Vec surge 50 Vv DC Supply Voltage Vee DC 25 Vv Operating Supply Voltage Vee opr 18 Vv Output Current (Peak) To(Peak) ) A Power Dissipation Pp 50 Ww Operating Temperature Voor -30~85 Cc Storage Temperature Tote -55~ 150 Cc ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Vec=15.2V, Rp=48, f=1kHz, Ta=257} CHARACTERISTIC SYMBOL circuit TEST CONDITION MIN. | TYP. | MAX. | UNIT Quiescent Supply Current Teco - Vin=0 - 120 250 mA Pourw - Vec=14.4V, THD=10% - 22 - Output Power Ww Pourtz) - THD=10% 16 19 - Total Harmonic Distortion THD Pour=1W - 0.04 0.4 % Voltage Gain Gy - - 48 50 52 dB Output Noise Voltage Vuo - Rg=02, BW=20Hz~20kHz - 0.30 | O70 | mVime Ripple Rejection Ratio RR - tipae= LOOH2z, Rg=600 82 40 54 - dB Input Resistance Rw - - - 30 - kha Output Offset Voltage V offset - Vin=0 300 0 300 mv Current at Stand-by State Isp - - - 1 10 HA Cross Talk CT - Rg=600 2, Vour=0dBm - 60 - dB @ Pin Control Voltage Vor - Stand-by OF F(Power ON) 25 - Vec Vv @) Pin Control Voltage V wwte) - Mute? ON (Power OFF) - Lo 2.0 Vv 1994, 10. 20 Revision No : 0 KEC 2AKIA6210AH BLOCK DIAGRAM AND TEST CIRCUIT KIA6210AH (Gy=50dB) * * + OV [x CC 9S iin 8 9) LO} Li) = Pre-Voc Power Power 4 Vocl Voce cl IN1 + Of & Pre- 4 7uF & 2 os NFL [Amp 3 _ ON O 1) Mute SW ~PROTECTOR ActiveHigh LOAD DUMP (PowerON) oe Ripple THERMAL SHUT DOWN lv SHORT CIRCUIT Jt 2 Cl 4 + 4.7uF ot 5 1 typ - OUTS 4 Oo % ~ PreGND Standby SW (5) (4) | Le ActiveHigh BV (PowerON) J 1994, 10, 20, Revision No : 0 KEC 3/lLKIA6210AH CAUTIONS AND APPLICATION METHOD (Description is made only on the single channel.) 1. Veltage Gain Adjustment Cy OUT Ost OUT oe Amp3,Amp4520dB + Amp1:PreAmp Amp3:Power Amp(FlatAmp) Amp2:Phase Amp Amp4:Power Amp(FlatAmp) Fig. 1 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 Gvl1. RI+(R;+R2) Gv = 20log Re The closed loop voltage gain of POWER Amp (Amp 3 and 4) is fixed at Gvs = Gya=20dB Therefore, the total closed circuit voltage gain Gv is obtained through BTL connection by the expression below, Cy=Gant GystGtd BB) cece cece cece eens (2) For example, when Rf=00, Gv is obtained by the expression (1) and (2) as shown below. Gy 24420+6+ =50dB 1994, 10. 20 Revision No : 0 KEC afdKIA6210AH The voltage gain is reduced when Rf is 60 increased. (Fig.2) With the voltage gain reduced, since (1) the oscillation stability is reduced, and (2) the pop noise changes when Vcc is set to ON, refer to the items 3 and 4. 50 40 30 20 VOLTAGE GAIN Gy (dB) G 0 300 500 1k 3k FEEDBACK RESISTANCE Re (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 1vwA(Typ.) at the stand-by state. Vec TO bias Cutting Cireuit (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 Vea) 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 is satisfactory for switching. Large current capacity switch Relay ~~o~ Battery ~~oO-+#~ Battery Voc Vcc From microcomputer | (Conventional Method) , small current capacity switch Directly from Battery microcomputer Battery standby Voc standby Voc (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. a (2 (3 (4 Voltage gain to be used (Gv Setting) Capacity value of condenser Kind of condenser Layout of printed board wt we 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 liable generated. 4, Input Offset Prevention Circuit At Vcc?ON Having Pre-Amp (Amp 1) mounted on the primary stage, this IC contains the circuit for making the Ampl 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 Vec?ON. The capacity values of the input and NF condenser (Cl and C2) shall be set according to the gain to be used. (Reference) (A) At Gv=50dB (Rf=0.2) Cl=4.7uF, C2=47 uF (B) At Gv=40dB (Rf=470Q) C1=3.3nF, C2=33 uF 1994, 10, 20 Revision No : 0 KEC WALKIA6210AH 5. Mutmg 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 600B 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 net appropriate to the audio muting but is effective in muting at Vec?ON, . ) Mute R3 1 Ql Power ON Ri = NM Qe OFF ] R2 RI,R3=1k0 ah R2=10k9 Fig.4 Mute Cireuit 1994, 10, 20 Revision No : 0 KEC 8/11KIA6210AH 6. External Part List And Description. NAME | RECOMM INFLUENCE OF ENDED OBJECT SMALLER THAN LARGER THAN REMARKS PART VALUE RECOMMENDED: RECOMMENDED VALUE VALUE . . Related to gain. Cy AT uF DC blocking Related to pop noise at Vcc? ON. Refer to item 4. Related to pop noise at Vcc? ON. C 47 Feedback a ue condenser Determination of low cut-off frequency. 1 = C 2H f.-R: Ripol Time constant is Time constant is Cz 220 uF vechration small at Vec?ON large at Vcc? ON or OFF. or OFF. Ca 0.12uR Oscillation Made liable to Oscillation Refer to jtem 3. Prevention oscillate. allowance improved. Ripol For filtering power supply hum and ripple. Cs 1000 uF spp 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 Pp MAX - Vee Pp (MAX507) a) Pp MAX. MAXIMUM POWER DISSIPATION RL=e2 0 8 10 12 14 16 20 f=1kHz, DUAL OPE = SUPPLY VOLTAGE Vcc () POWER DISSIPATION Pp (W) Pp Ta INFINITE HEAT RAUCH1.5C/W HEAT SINK ROHS=3.5C/W RGOJC+REHS=FC/W @ NO HEAT SINK ROJA=25'C /W 0 10 20 30 OUTPUT POWER Pour (W)/CH POWER DISSIPATION Pp (W) 0 a5 50 75 100 125 150 AMBIENT TEMPERATURE Ta (C) R.R -f I I I | I oe FF BW WwW eS o c co 6S & I oe o I I 2 20 100 300 Ik 3k 10k 30k 20 100 300 tk 3k 10k 30k 100k FREQUENCY f (Hz) SIGNAL SQURCE RESISTANCE Ry (Q) RIPPLE REJECTION RATIC R.R (dB) RIPPLE REJECTION RATIO R.R (dB) 1994, 10, 20 Revision No : 0 KEC 10/11KIA6210AH THD Pouris THD Povryz) cc=13.2 =40 f=100 0.1 0.3 1 3 10 30 100 300 0.1 0.5 1 3 10 30 100 300 TOTAL HARMONIC DISTORTION THD (%) TOTAL HARMONIC DISTORTION THD (%) OUTPUT POWER Four () OUTPUT POWER Pour (W) Ieca Vee & THD - f = a g = 5s ~ 200 : 3 Veco =13.2V 5 2 = 160 e 1 5 S 0.5 mB 120 n (0.3 Be A a 80 = Q.1 B eS 0.05 me 40 me 0.03 4 = oe fen] ee 5 0 4 (0.01 oF 0 4 68 12 16 20 24 28 a 20 100 300 tk 3k 10k 30k 100k o Be SUPPLY VOLTAGE Vcc (V) FREQUENCY f (Hz) 1994, 10, 20 Revision No : 0 KEC 1/11