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| UNISONIC TECHNOLOGIES CO., LTD KA8602 LOW VOLTAGE AUDIO POWER AMPLIFIER DESCRIPTION The UTC KA8602 is the audio power amplifier available for low voltage. The UTC KA8602 supplies differential outputs for maximizing output swing at low voltages. The UTC KA8602 does not need coupling capacitors to the speaker. The gain of this amplifier is controlled easily by two external resistors. SOP-8 LINEAR INTEGRATED CIRCUIT FEATURES *Wide operating supply voltage: Vcc=2V~16V *Low quiescent supply current( Icc=2.7mA, typ) *Medium output power (POUT=250mW at Vcc=6V, RL=32ohm, THD=10% *Load impedance range: 8~100ohm *Mute function (Icc=65A, typ) *Minimum number of external parts required. *Low distortion DIP-8 ORDERING INFORMATION Normal KA8602-D08-T KA8602-S08-R Ordering Number Lead Free KA8602L-D08-T KA8602L-S08-R Halogen Free KA8602G-D08-T KA8602G-S08-R Package DIP-8 SOP-8 Packing Tube Tape Reel www.unisonic.com.tw Copyright (c) 2010 Unisonic Technologies Co., Ltd 1 of 6 QW-R107-043.Ca KA8602 PIN CONFIGURATIONS PIN 1 2 3 4 5 6 7 8 NAME LINEAR INTEGRATED CIRCUIT DESCRIPTION Analog Ground for the amplifiers. A 1F capacitor at this pin (with a 5F capacitor at pin 8) Input(+) provides 52dB (typ) of power supply rejection. Turn-on time of the circuit is affected by the capacitor on this pin. This pin can be used as an alternative input. Amplifier input. The input capacitor and resistor set low frequency roll-off and input impedance. Input(-) The feedback resistor is connected between this pin and output 1. Output 1 Amplifier 1's output. The DC level is about (Vcc~0.7V)/2. Vcc DC supply voltage is applied to this pin (Vcc=2~16V). GND Ground pin. Amplifier 2's output. This signal is equal in amplitude, but 180 out of phase with that output 1, the Output 2 DC level is about (Vcc~0.7V)/2. This pin can be used to power down the IC to converse power, or for muting, or both. When at a Mute logic "LOW" (less than 0.8V), the IC is enabled for normal operation. When at a logic "HIGH" (2V to Vcc), the IC is disabled. If Mute is open, that is equivalent to a logic "LOW". Ripple A capacitor at this pin increase power supply rejection, and affects turn-on time. This pin can be Rejection left open if the capacitor at pin 1 is sufficient. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R107-043.Ca KA8602 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT Inverting Input NonInberting Input 2 1 Amp 1 + R R 3 Output 1 Amp 2 + VCC 4 Bias 8 Ripplie Rejection 5 GND 7 Mute 6 Output 2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R107-043.Ca KA8602 ABSOLUTE MAXIMUM RATINGS (Ta=25C) LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL RATINGS UNIT Supply Voltage Vcc -1~18 V Output Current IOUT +-250 mA Maximum Input, Ripple Rejection, Mute Pin Voltage Vi(max) -1~Vcc+1 V Applied Output Voltage( Output Pin When Disabled) VOUT -1~Vcc+1 V Temperature Junction TJ -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. RECOMMENDED OPERATION CONDITIONS (Ta=25C) PARAMETER Supply Voltage Load Impedance Peak Load Current Differential Gain (5KHz Bandwidth) Voltage at Mute Ambient Temperature SYMBOL Vcc ZL IL(PEAK) Gv VI(mute) Ta RATINGS 2~16 8~100 200 0~46 0~Vcc -20~+70 UNIT V mA dB V C ELECTRICAL CHARACTERISTICS (Vcc=6V, Ta=25C, unless otherwise specified) PARAMETER DC PARAMETER Operating Current SYMBOL TEST CONDITIONS Vcc=3V, Mute=0.8V Vcc=16V, Mute=0.8V Vcc=3V, Mute=2V Vcc=3V, RL=16, R1=75K Vcc=6V, RL=16, R1=75K Vcc=12V, RL=16, R1=75K Vcc=6V, Rf=75K, RL=32 2V 1 Output Voltage Output Offset Voltage Output High Level Output Low Level Input Bias Current Equivalent Resistance AC PARAMETER Open Loop Gain of Amp. 1 Open Loop Gain of Amp. 2 Output Power VOUT VO(OFF) VOH VOL II(BIAS) REQ -30 30 100 18 80 -0.35 55 250 400 -200 220 40 Gv1 Gv2 POUT Total Harmonic Distortion (f=1KHz) Gain Bandwidth Product Power Supply Rejection (Vcc=6V, Vcc=3V) Muting THD GBW f=1KHz, RL=32 Vcc=3V, RL=6, THD<10% Vcc=6V, RL=32, THD<10% Vcc=12V, RL=100, THD<10% Vcc=6V, RL=32, POUT=125mW Vcc<3V, RL=8, POUT=20mW Vcc<12V, RL=32, POUT=200mW 0 0.35 0.5 0.5 0.6 1.5 50 12 52 70 1 C1=, C2=0.01F C1=0.1F, C2=0, f=1KHz C1=1F, C2=5F, f=1KHz Gv(mute) Mute=2V, 1KHz www.unisonic.com.tw 4 of 6 QW-R107-043.Ca KA8602 APPLICATION CIRCUIT LINEAR INTEGRATED CIRCUIT Speaker VCC (+1.0V ~ +8.0V) VCC 75k 4 3k 2 0.1F UTC KA8602 1 8 Vee (-1.0V ~ -8.0V) Audio Input 7 3 Speaker 4.7k Mute 20k 6 5 10k 20k UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R107-043.Ca Speaker KA8602 LINEAR INTEGRATED CIRCUIT 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 expected 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. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 6 QW-R107-043.Ca |
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