UNISONIC TECHNOLOGIES CO., LTD KA8602 LINEAR INTEGRATED CIRCUIT LOW VOLTAGE AUDIO POWER AMPLIFIER DESCRIPTION SOP-8 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. FEATURES DIP-8 *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=65μA, typ) *Minimum number of external parts required. *Low distortion 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 www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd Package Packing DIP-8 SOP-8 Tube Tape Reel 1 of 6 QW-R107-043.Ca KA8602 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATIONS PIN 1 2 3 4 5 6 7 8 NAME DESCRIPTION Analog Ground for the amplifiers. A 1μF capacitor at this pin (with a 5μF 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 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM Inverting Input NonInberting Input - 2 Amp 1 3 Output 1 6 Output 2 7 Mute + 1 R R Amp 2 + VCC Bias 4 8 5 Ripplie Rejection GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R107-043.Ca KA8602 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25°C) 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=25°C) PARAMETER SYMBOL Vcc ZL IL(PEAK) ΔGv VI(mute) Ta Supply Voltage Load Impedance Peak Load Current Differential Gain (5KHz Bandwidth) Voltage at Mute Ambient Temperature RATINGS 2~16 8~100 ±200 UNIT V Ω mA dB V °C 0~46 0~Vcc -20~+70 ELECTRICAL CHARACTERISTICS (Vcc=6V, Ta=25°C, unless otherwise specified) PARAMETER DC PARAMETER SYMBOL Operating Current Icc Output Voltage VOUT Output Offset Voltage Output High Level Output Low Level Input Bias Current VO(OFF) VOH VOL II(BIAS) Equivalent Resistance REQ AC PARAMETER Open Loop Gain of Amp. 1 Open Loop Gain of Amp. 2 Gv1 Gv2 Output Power POUT Total Harmonic Distortion (f=1KHz) THD Gain Bandwidth Product GBW Power Supply Rejection (Vcc=6V, ΔVcc=3V) Muting TEST CONDITIONS Vcc=3V, Mute=0.8V Vcc=16V, Mute=0.8V Vcc=3V, Mute=2V Vcc=3V, RL=16Ω, R1=75KΩ Vcc=6V, RL=16Ω, R1=75KΩ Vcc=12V, RL=16Ω, R1=75KΩ Vcc=6V, Rf=75KΩ, RL=32Ω 2V<Vcc<16V, IOUT=-75mA 2V<Vcc<16V, IOUT=75mA Pin 1 Pin 8 f=1KHz, RL=32Ω Vcc=3V, RL=6Ω, THD<10% Vcc=6V, RL=32Ω, THD<10% Vcc=12V, RL=100Ω, THD<10% Vcc=6V, RL=32Ω, POUT=125mW Vcc<3V, RL=8Ω, POUT=20mW Vcc<12V, RL=32Ω, POUT=200mW C1=∝, C2=0.01μF C1=0.1μF, C2=0, f=1KHz C1=1μF, C2=5μF, f=1KHz Gv(mute) Mute=2V, 1KHz<f<20KHz 1 -30 100 18 80 -0.35 55 250 400 TYP MAX UNIT 2.7 3.3 65 1.15 2.65 5.65 0 Vcc~1 0.16 -100 150 25 4 5 100 1.25 -200 220 40 mA mA μA V V V mV V V nA KΩ KΩ 0 0.35 0.5 0.5 0.6 1.5 1 50 PSRR UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 12 52 70 30 dB dB mW mW mW % % % MHz dB dB dB dB 4 of 6 QW-R107-043.Ca KA8602 Speaker APPLICATION CIRCUIT Speaker VCC (+1.0V ~ +8.0V) VCC 75kΩ Audio Input 4 7 4.7kΩ 3kΩ 2 3 Speaker LINEAR INTEGRATED CIRCUIT 0.1μF UTC KA8602 1 6 8 Vee (-1.0V ~ -8.0V) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 10kΩ Mute 20kΩ 20kΩ 5 of 6 QW-R107-043.Ca 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