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KIA6278S Dataheets PDF



Part Number KIA6278S
Manufacturers KEC
Logo KEC
Description 1W SINGLE AUDIO POWER AMPLIFIER
Datasheet KIA6278S DatasheetKIA6278S Datasheet (PDF)

K" E C SEMTEICCHONINCADL UDCATTAOR KIA6278P/S/F BIPOLAR LINEAR INTEGRATED CIRCUIT 1W SINGLE AUDIO POWER AMPLIFIER KIA6278P/S/F are suitable for the audio power amplifier of portable radio cassette. FEATURES * Very few external parts counts (only three capacitor) * Low Quiescent Current :IccQ=6.6mA(Typ.) (Vcc=6V) * Wide operationg supply voltage range. :Vcc=2~10V * Output Power :POUT=720mW(TyP.) (Vcc=6V, RL=4&, THD=10%) * Voltage Gain : Gv=40dB(Typ.) MAXIMUM RATINGS (Ta=25°C) CHARACTERISTIC .

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K" E C SEMTEICCHONINCADL UDCATTAOR KIA6278P/S/F BIPOLAR LINEAR INTEGRATED CIRCUIT 1W SINGLE AUDIO POWER AMPLIFIER KIA6278P/S/F are suitable for the audio power amplifier of portable radio cassette. FEATURES * Very few external parts counts (only three capacitor) * Low Quiescent Current :IccQ=6.6mA(Typ.) (Vcc=6V) * Wide operationg supply voltage range. :Vcc=2~10V * Output Power :POUT=720mW(TyP.) (Vcc=6V, RL=4&, THD=10%) * Voltage Gain : Gv=40dB(Typ.) MAXIMUM RATINGS (Ta=25°C) CHARACTERISTIC SYMBOL RATING UNIT Supply Voltage Power Dissipation (Peakage Limitation) (Note) KIA6278P KIA6278S KIA6278F Vcc PD 14 V 900 950 mW 400 Operating Temperature T0pr -25-75 °C Storage Temperature Tstg - 5 5 - 1 5 0 °C Note : Derated above Ta=25°C in the proportion of 7.2mW/°C. 8 L1—1 1 1 1 r iii i 1 5 1 1—1 11 -m 1 11 u DIM A B D d G H MILLIMETERS 9.6±0.2 6.45±0.2 1.52±0.1 0.46±0.1 0 . 5 0 MIN 3.8±0.3 L 3.3±0.3 P 2.54 T 0.25 + 0 . 1 / - 0 . 0 5 W 7.62 ? 0 - 15" DIP — 8 DIM A B D d G H L P T MILLIMETERS 22.48± 0.2 3.2± 0.2 1.2± 0.25 0.5± 0.1 1.95± 0.2 7. 7 ± 0 . 3 3.2± 0.3 2.54 0.25+0.1/-0.05 SIP — 9 1999. 1. 11 Revision No : 1 H H j H H" ,a. .t.il.t.i HJ_ rj u 1 DIM A B1 B2 D G H L P T MILLIMETERS 4.85± 0.2 3.94± 0.2 6.02± 0.3 0.4± 0.1 0.15+0.1/—0.05 1.63+0.2 0.65+0.2 1.27 0.20 + 0 . 1 / - 0 . 0 5 KEC FLP-8 1/5 KIA6278P/S/F ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Vcc=6V, f=lkHz, Rg=600^, RL=4^, Ta=25°C) CHARACTERISTIC SYMBOL TEST CIRCUIT TEST CONDITION Vcc=3V, ViN=0V MIN. TYP. MAX. UNIT - 5.5 - Quiescent Current ICCQ - Vcc=6V, ViN=0V - 6.6 15 M A Vcc=9V, ViN=0V - 7.5 18 Vcc=3V, RL=4 Q, THD=10% - 120 - Vcc=6V, RL=4 Q, THD=10% 500 720 - Output Power POUT - Vcc=6V, RL=8 Q, THD=10% 300 450 - mW Vcc=9V, RL=8 Q, THD=10% 800 1100 - Vcc=9V, RL=16&, THD=10% 450 610 - Total Harmonic Distortion THD - POUT=100mW - 0.3 1.0 % Voltage Gain Gv - VlN=0.5mVrms 37 40 43 dB Output Noise Voltage Ripple Rejection Ratio Input Resistance VNO R.R. RIN - Rg=10k^, BW=20Hz~20kHz fRIP=100Hz, VRIP=0.3Vrms Without CRIP - 0.2 0.5 MVRMS 25 - dB 27 - TYPICAL VOLTAGE OF EACH TERMINAL (KIA6278S) (Vcc=6V, Ta=25°C, by test circuit) TERMINAL NO. 1 2 3 4 5 6 DC Voltage 0 2.40 0.62 0.64 0 0 (unit:V) 789 2.61 NC 6.0 1999. 1. 11 Revision No : 1 KEC 2/5 KIA6278P/S/F TEST CIRCUIT & BLOCK DIAGRAM VCC Note : The Vcc of KIA6278S is pin The Vcc of KIA6278P/F are pin (8). 1999. 1. 11 Revision No : 1 KEC 3/5 KIA6278P/S/F PRECAUTION FOR USE AND APPLICATION 1) Input Stage The input stage of power amplifier (Equivalent circuit) is comprised of a PNP differential pair (Q2 and Q3) preceded by a PNP emitter follower (Ql) which allows DC referencing of the source signal to ground. This eliminates the need for an input coupling capacitor. However, in case the brush noise of volume becomes a problem, provide serially a coupling capacitor to the input side. 2) Adjustment of Voltage Gain The voltage gain is fixed at Gv=40dB by the resistors (R4 and R5) in IC, however, its reduction is possible through adding Rf as shown in Fig 2. In this case, the voltage gain is obtained by the following Equation. Gv = 20 log R5 + R4 + R4 + Rf Rf It is recommended to use this IC with the voltage gain of Gv=28dB or over. VINO 3) Ripple Rejection Ratio Adding CRIP, to terminasl 2 as shown Fig 3, the Ripple Rejection ratio is improved from -25dB Typ. to -45dB Typ.. (in case of CRIP=100//F). Refer to R.R. vs. f characteristics. R5 FROM PIN 7 Q2 Q3 I—f-^VNA/ ;r4 Fig. 1 Fig. 2 1999. 1. 11 Revision No : 1 KEC 4/5 KIA6278P/S/F T H D - POUT ( 1 ) PnH 30 f=lkHz RL=4Q o HHtHf OHt/3 10 Ta=25'C 5 3 HPH O HH l CD - II £ O 0.5 5Hi 0.3 0.1 HOH 0.003 0.01 0.03 0.1 0.3 1 OUTPUT POWER PQUT 0 0 T H D - POUT ( 3 ) 0.003 0.01 0.03 0.1 0.3 1 OUTPUT POWER PQUT 0 0 P D - POUT ( 2 ) 1.0 Q PL £O 0.8 HHO 0.6 EGHO 3 0.4 TF 0.2 o PL, 0 0 Vcc=6V f=lkHz Ta=25'C Rl=8Q * Rl=160 THn= 1 <2 THD =10% / CJ 0.2 0.4 0.6 0.8 1.0 1.2 OUTPUT POWER PQUT 0 0 1.4 £ p T H D - POUT ( 2 ) wH o HH E« H o EH CO HPH u HH o 2 o 0.003 0.01 0.03 0.1 0.3 1 EH OUTPUT POWER PQUT 0 0 P D " POUT ( 1 ) 1.0 o PL, 0.8 Vcc=6V f=lkHz Ta=25'C o HH E« H 0.6 o THD=1% THD =10% EGHQ 0.4 ,— w£o 0.2 PL, 0 t/ / / / / RL=40 RL=8n 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 OUTPUT POWER PQUT 0 0 £ P D MAX - Vcc Q PL, o HH E« H o EwH HpH « o PL, p 2 0 2 4 6 8 10 12 14 SUPPLY VOLTAGE VCC (V) 1999. 1. 11 Revision No : 1 KEC 5/5 .


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