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It is designed for portable cassette player and radio. FEATURES • • • • Wide operating supply voltage: VCC = I.8V ~ 9V Low crossover distortion Low quiescent circuit current Bridge/stereo configuration ORDERING INFORMATION BLOCK DIAGRAM Device Package KA2209B 8-DIP-300 NF1 IN1 IN2 NF2 8 7 6 5 - + - Operating Temperature -20°C ~ +70°C + BIAS CIRCUIT Fig. 1 Characteristic 1 2 3 4 OUT1 Vcc OUT2 GND Symbol Value Unit Supply Voltage VCC IPK 15 1 V Output Peak Current Power Dissipation PD Operating Temperature T OPR Storage Temperature T STG at TAMB = 50°C 1.0 at TCASE = 50°C 1.4 -20 ~ + 70 -40 ~ +150 A W °C °C KA2209B DUAL LOW VOLTAGE POWER AMP ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (T a =25°C, Vcc =6V, f =1KHz, unless otherwise specified) Characteristic Symbol Test Conditions Min Typ Vcc Quiescent Circuit Current ICCQ VI = 0 9 mA Gvc Stereo 40 dB Bridge 40 Channel Balance CB Stereo 0.4 0.65 W 0.11 W 1.35 W 0.35 W Stereo, RL = 8Ω, PO = 0.2W 0.5 % Bridge, RL = 8Ω, P O = 0.5W 0.5 % 30 dB VCC = 6V, RL = 4Ω, THD=10% VCC = 3V, RL = 4Ω, THD=10% VCC = 6V, RL = 8Ω, THD=10% Bridge THD dB 0 PO Total Harmonic Distortion V -1 Stereo Output Power 9 Unit Operating Voltage Closed Loop Voltage Gain 1.8 Max 0.9 VCC = 3V, RL = 4Ω, THD=10% Ripple Rejection Ratio RR Stereo, f =100HZ, C3 = 100uF Output Noise Voltage VNO Stereo, BW(-3dB) = 20Hz ~ 20KHz Cross Talk CT Stereo, f =1KHZ Input Resistance RI 24 0.5 50 100 1 2.0 dB mV dB KΩ KA2209B DUAL LOW VOLTAGE POWER AMP APPLICATION CIRCUIT + 5 4 - 1.STEREO 3 100u 6 IN2 470u OUT2 0.1u 10K 2 + 7 IN1 10K V CC 1 - 8 100u RL 4.7 OUT1 470u 0.1u RL 4.7 100u Fig. 2 2. 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