KA2206B 2.3W DUAL AUDIO POWER AMP The KA2206B is a monolithic intergrated circuit consisting of a 2-channel power amplifier. It is suitable for stereo and bridge 12-DIPH-300 amplifier application of radio cassette tape recorder. FEATURES • High output power Stereo : PO = 2.3W(Typ) at VCC = 9V, RL = 4Ω. Bridge : PO = 4.7W (Typ) at VCC = 9V, RL = 8Ω • Low switching distortion at high frequency. • 16-DIP-300A Small shock noise at the time of power on/off due to a built-in muting circuit • Good ripple rejection due to a built-in ripple filter. • Good channel separation. • Soft tone at the time of output saturation. • Closed loop voltage gain fixed 45dB (Bridge : 51dB) but availability with external resistor added. • Minimum number of external parts required. • Easy to design radiator fin. ORDERING INFORMATION Device Package Operating Temperature KS2206B 12-DIPH-300 -20°C ~ +70°C KS22069BN 16-DIP-300A BLOCK DIAGRAM P R E G N D IN1 N F 1 P O W E R G N D B S 1 O U T 1 V C C 7 8 9 Fin 1 0 1 1 1 2 - S H O C K N O I S E I N P U T O U T R E J E C T O R A M P 1 A M P 1 + R I P P L E F I L T E R - I N P U T O U T A M P 2 A M P 2 + 6 5 4 Fin 3 2 1 R . R IN2 N F 2 P O W E R G N D B S 2 O U T 2 B T L O U T Fig. 1 Document Outline Features Absolute Maximum Ratings Block Diagram Application Circuit Package Dimension
