KIA6282K

TIGER ELECTRONIC CO.,LTD KIA6282K 4 .6W D UAL A UDIO POWER A MPLIFIER G ENERAL D ESCRIPTION D6282 is an audio power IC with built-in two Channels developed for portable radio cassette tape recorder with power ON/OFF switch. Thermal shut down protection circuit is built in. Because of the parts reduction and SIP (Single in line package), space merit is remarkable. F E AT U R E S High Power Outline Drawing : ( V c c = 9 V, R L = 4 Ω , f = 1 k H z , T H D = 1 0 % ) : ( V c c = 1 2 V, R L = 4 Ω , f = 1 k H z , T H D = 1 0 % ) P o u t = 2 . 5 W / C H ( Ty p . ) P o u t = 4 . 6 W / C H ( Ty p . ) Low popping noise at power ON S m a l l Q u i e s c e n t C u r r e n t : I C C Q = 1 9 m A ( Ty p . ) Soft Clip Built-in thermal shut down protection circuit B e s t f o r s u p p l y v o l t a g e 9 V, 1 2 V Operation supply voltage range : Vcc=6~15V ( V c c = 9 V Vi n = 0 ) M AXIMUM RATINGS ( Ta = 2 5 ° C) CHARACTERISTIC Supply Output Vo l t a g e Current (Peak/CH) SYMBOL Vcc IQ(peak) PD To p r Ts t g R AT I N G 20 2.5 12.5 -20~75 -55~150 UNIT V A W °C °C Power Dissipation O p e r a t i n g Te m p e r a t u r e S t o r a g e Te m p e r a t u r e D6282 T YPICAL DC VO LTAGE OF EACH TERMINAL ( V c c = 9 V, Ta = 2 5 ° C ) TERMINAL NO. D C V O LTA G E ( V ) 1 8.2 2 4.5 3 Vcc 4 8.9 5 0.6 6 7 8 9 10 11 8.2 12 Vcc 0.01 0.01 0.6 GND 4.5 *3 pin is connected to Vcc E LECTRICAL CHARACTERISTICS ( U n l e s s o t h e r w i s e s p e c i f i e d , V c c = 9 V, f = 1 k H z , R g = 6 0 0 Ω , R L = 4 Ω , Ta = 2 5 ° C ) CHARACTERISTIC Quiescent Current Output Power To t a l H a r m o n i c Distortion Vo l t a g e G a i n Input Resistance O u t p u t N o i s e Vo l t a g e Ripple Rejection Ratio C r o s s Ta l k I n p u t O ff s e t Vo l t a g e SYMBOL ICCQ Pout(1) Pout(2) THD Gv(1) Gv(2) RIN VNO R.R C.T V6,V7 TEST CONDITION VIN=0 THD=10% THD=10%,Vcc=12V Pout=1W/CH R f = 8 2 Ω , Vo u t = 0 d B m R f = 0 , Vo u t = 0 d B m Rg=10kΩ, BW=20Hz~20kHZ Rg=600Ω, V R I P = 0 . 2 Vr m s fRIP=100Hz Rg=600Ω.Amp1↔2 Vo u t = 0 d B m , f = 1 k H z M I N . T Y P. M A X . U N I T 2.0 43 19 2.5 4.6 0.25 45 56 30 0.3 54 45 20 45 1.0 47 1.0 60 mA W % dB kΩ m Vr m s dB dB mV D6282 T EST C IRCUIT & B LOCK DIAGRAM Vcc1 12 Vcc2 3 C10 2200uF B.S.1 *C IN IN - 1 C1 47uF C3 *C IN IN - 2 C2 47uF Rf2 82 8 4 220uF Rf1 82 IN1 6 5 NF1 30 Ripple + ch - 1 20K BIAS CIRCUIT THERMAL SHUT DOWN PROTECTION CIRCUIT 2 C4 100uF 1 1000uF C8 OUT - 1 RL RL OUT - 2 INPUT Rf CNF 47uF Vcc C6 0.15uF 100uF 7 IN2 NF2 30 + ch - 2 10 C5 11 20K 9 GND C9 1000uF C7 0.15uF B.S.2 * This IC can be used without coupling capacitor (CIN),If volume slide noise occurred by input offset voltage is undesirable, it needs to use the capacitor(CIN). A PPLICAT ION I NFORMAT ION AND APPLICAT ION M ETHOD 1 . A DJUSTMENT O F V OLTAGE G AIN The voltage gain Gv is obtained as 6/7 5/8 + AMP R2 20K follows by R1,R2 and Rf in Fig.1. Gv=20log((Rf+R1+R2)/(Rf+R1)) When Rf=0 When Rf=82Ω G v = 5 6 d B ( Ty p . ) G v = 4 5 d B ( Ty p . ) R1 30 2/10 OUTPUT By increasing Rf , reduction of Gv is p o s s i b l e , H o w e v e r, s i n c e t h e f e e d b a c k Fig 1. increase is liable to produce oscillation , it is recommended to use this at 40dB or o v e r. D6282 2 . T HERMAL S HUT-DOW N CIRCUIT The thermal shut-down circuit is built in for the purpose of preventing the destruction of IC due to the abnormal temperature rise when the heat radiation is insufficient . The operation temperature is set at radiation Fin temperature 1 7 5 ° C ( Ty p . ) At this temperature or over the bias is interrupted to prevent the destruction of IC. 3 . I NPUT S TAGE The input circuit of this IC is as shown in Fig.2.PNP TR: Q1 is provided in the input circuit so as to make its usage. Possible c a p a c i t o r. without However the , at input pins coupling ⑥ and CIN 9 INPUT Q1 6/7 30 to BIAS Pre - GND 5/8 Rf 47uF Q2 Q3 OUTPUT 20K 2/10 to DRIVER 30 ⑦ ,max 60mV offset voltage is produced. Application after checking volume slide noise is recommended. For cutting the volume the input slide capacitor: noise, CIN in Insert series to interrupt the DC component 4. O SCILATION P REVENTIVE M EASURES GND ,it is recommended to use Polyester film Fig.2 capacitor having good For oscillation preventive capacitor C6 and C7 between the output terminal and c h a r a c t e r i s t i c s f o r t e m p e r a t u r e a n d f o r h i g h f r e q u e n c y. Since the characteristics of the capacitor is liable to be influenced by the temperature, use this capacitor after the temperature test to check the oscillation allowance. In addition ,as the position of the electrolytic capacitor has a remarkable influence on the oscillation ,connect C10 to Vcc at the nearest possible position from power GND. At using this application with the voltage gain reduced, oscillation is liable to be produced ,Apply the capacitor after checking enough for its capacity ,type and mounting position. D6282 As the oscillation allowance varies according to the printed pattern layout, the standard printed board is recommended to be referred to design it 5 . I NPUT V OLTAGE When the excessive signal is input, turning-up is produced in the clip waveform. T h e t u r n i n g - u p p o i n t i s V I N = 3 0 0 m V r m s ( T y p . ) : V c c = 9 V, R L = 4 Ω , f = 1 k H z : E n o u g h care must be taken for this phenomenon. 6 . P OW E R ON/OFF SW ITCH T h e r e i s p o w e r O N / O F F s w i t c h a t p i n 3 . H o w e v e r, o u t p u t p o w e r i s c h a n g e d b y p i n 3 supply voltage when pin 3 voltage in not same pin 12 supply voltage, after referring to attached date, select pin 3 supply voltage. 7 . G ND L INE GND pin is not separated for Pre-GND and for Pw-GND. That is liable to cause distortion and cross talk worse. Before use this IC, please check it. C HARACTERISTICS CUR VES D6282 D6282