A6283

A6283 UTC | Alldatasheet

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UNISONIC TECHNOLOGIES CO., LTD A6283 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 7 Copyright © 2005 Unisonic Technologies Co., Ltd QW-R107-047,A 4.6W DUAL AUDIO POWER AMPLIFIER „ DESCRIPTION UTC A6283 is an audio power IC with built-in two channels developed for portable radio cassette tape recorder. Because of the parts reduction and sip (Single In line Package), space merit is remarkable. Thermal shut down protection circuit is built in. „ FEATURES * High Power * POUT = 2.5W/CH (Typ.) : (VCC = 9V, RL = 4Ω, f = 1kHz, THD = 10%) P OUT = 4.6W/CH (Typ.) : (VCC = 12V, RL = 4Ω, f = 1kHz, THD = 10%) * Low popping noise at power ON * Small Quiescent Current : I Q = 19mA (Typ.), (VCC = 9V, VIN = 0) * Soft Clip * Built-in thermal shut down protection circuit * Best for supply voltage 9V, 12V * Operation supply voltage range: V CC = 6~15V FSIP-12H *Pb-free plating product number: A6283L „ ORDERING INFORMATION Order Number Normal Lead Free Plating Package Packing A6283-F12-T A6283L-F12-T FSIP-12H Tube A6283L-F12-T (1)Packing Type (2)Package Type (3)Lead Plating (1) T: Tube (2) F12: FSIP-12H (3) L: Lead Free Plating, Blank: Pb/Sn

A6283 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 of 7 www.unisonic.com.tw QW-R107-047,A „ PIN DESCRIPTION (TOP VIEW) VCC B.S.2 OUT-2 Power-GND NF2 IN-2 Pre-GND IN-1 NF1 RIPPLE OUT-1 B.S.1 FSIP-12H

A6283 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 of 7 www.unisonic.com.tw QW-R107-047,A „ ABSOLUTE MAXIMUM RATINGS (Ta = 25℃) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC 20 V Output Current (Peak/CH) IO(PEAK) 2.5 A Power Dissipation PD 12.5 W Junction Temperature T J +125 °C Operating Temperature T OPR -20~ +75 °C Storage Temperature T STG -55~+150 °C Note Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. „ TYPICAL DC VOLTAGE OF EACH TERMINAL (VCC = 9V, Ta = 25℃) TERMINAL NO. 1 2 3 4 5 6 7 8 9 10 11 12 „ ELECTRICAL CHARACTERISTICS (Ta = 25℃, VCC= 6V, RG = 600Ω, RL = 10kΩ, f = 1kHz, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Quiescent Current IQ VIN = 0 20 45 mA Input Offset Voltage V5, V7 20 60 mV POUT(1) THD = 10% 2.0 2.5 Output Power POUT(2) THD = 10%, VCC = 12V 4.6 W GV(1) RF = 82Ω, VOUT = 0dBm 43 45 47 Voltage Gain GV(2) RF = 0, VOUT = 0dBm 56 dB Output Noise Voltage eN RG = 10kΩ, BW = 20Hz~20kHz 0.3 1.0 mVRMS Input Resistance RIN 30 k Ω Ripple Rejection Ratio RR RG = 600Ω, VRIP =0.2VRMS fRIP = 100Hz, 50 dB Cross Talk C.T RG = 600Ω, Amp1 2 VOUT = 0dBm, fRIP = 1kHz, 60 dB Total Harmonic Distortion THD POUT = 1W/CH 0.2 1.0 %

A6283 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 of 7 www.unisonic.com.tw QW-R107-047,A „ TEST CIRCUIT & BLOCK DIAGRAM ch - 1 Bias Circuit Thermal Shut Down Protection Circuit B.S.2 C9 1000µF RL 100µF Pre - GND IN - 2 IN - 1 47µF OUT - 1 RL OUT - 2 * CIN 30O ch - 2 RF1 82O +C2 47µF +C3 220µF NF1 IN1 Ripple RF2 82O 30ONF2 IN2 20kO 20kO 0.15µF 1000µF 100µF 100µF 0.15µF B.S.1 C10 2200µF VCC Power - GND * CIN VCC OUT1 OUT2 * This IC can be used without coupling capacitor (C IN). If volume slide noise occurred dy input offset voltage is undesirable, it needs to use the capacitor (CIN).

A6283 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 5 of 7 www.unisonic.com.tw QW-R107-047,A „ APPLICATION INFORMATION AND APPLICATION METHOD 1. ADJUSTMENT OF VOLTAGE GAIN The voltage gain G V is obtained as follows by R1, R2 and RF in Fig.1. GV = 20 log RF+R1+R2 RF+R1 When RF = 0 G V = 56dB (Typ.) When RF = 82Ω G V = 45dB (Typ.) By increasing RF, reduction of GV is possible, However, since the feedback increase is liable to produce oscillation, it is recommended to use this at 40dB or over. 2/10AMP 30Ω RF INPUT 20kΩ OUTPUT Fig.1. 2. THERMAL SHUT-DOWN CIRCUIT The thermal shut-down circuit is built in for the purpo se of preventing the destruction of IC due to the abnormal temperature rise when the heat radiation is insufficient.

A6283 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 6 of 7 www.unisonic.com.tw QW-R107-047,A „ APPLICATION INFORMATION AND APPLICATION METHOD (Cont.) 3. INPUT STAGE 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 without the input coupling capacitor. However, at pins ⑤ and ⑦, max 60mV offset voltage is produced. Application after checking volume slide noise is recommended. For cutting the volume slide noise, inset the input capacitor: CIN in series to interrupt the DC component. INPUT OUTPUT 20kΩ 30Ω Q2 Q3 30kΩ CIN Pre-GND to DRIVER to BIAS 47μF RF Fig.2. 4. OSCILLATION PERVENTIVE MEASURES For oscillation preventive capacitor C6 and C7 between the output terminal and GND, it is recommended to use polyester film capacitor having good characteristics for temperature and for high frequency. Since the characteristics of the capacitor is liable to be in fluenced by the temperature, use this capacitor after the temperature test to check the oscillation allowance. In add ition, 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. 5. INPUT VOLTAGE When the excessive signal is input, turning-up is produced in the clip waveform. The turning-up point is V IN = 300mVRMS (Typ.): VCC = 9V, RL = 4Ω, f = 1kHz : Enough care must be taken for this phenomenon.

A6283 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 7 of 7 www.unisonic.com.tw QW-R107-047,A „ TYPICAL CHARACTERISTICS PD(MAX) - VCC 81 0 Supply Voltage, VCC (V) Maxmum Power Dissipation, PD(MAX) (W) 12 14 16 f = 1kHz THD = 10% RL = 4Ω RL = 2Ω RL = 3Ω 26 4 POUT - VCC Supply Voltage, VCC (V) Output Power, POUT (W) 241646 12 f = 1kHz THD = 10% RL = 3Ω RL = 4Ω RL = 2Ω PD - POUT Output Power, POUT (W) Power Dissipation, PD (W) 6412 3 RL = 4Ω f = 1kHz VCC = 9V VCC = 12V VCC = 6V PD - POUT Output Power, POUT (W) Power Dissipation, PD (W) 6412 3 VCC = 9V f = 1kHz RL = 3Ω RL = 4Ω RL = 2Ω UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expec ted to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.