KS2206C

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 amplifier application of radio cassette tape recorder. 12-DIPH-300 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. • 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. 16-DIP-300A ORDERING INFORMATION Device KS2206B KS22069BN Package 12-DIPH-300 16-DIP-300A Operating Temperature -20°C ~ +70°C BLOCK DIAGRAM PRE GND 7 IN1 8 NF1 9 POWER GND Fin BS1 10 OUT1 11 VCC 12 SHOCK NOISE REJECTOR INPUT AMP 1 + OUT AMP 1 RIPPLE FILTER INPUT AMP 2 + OUT AMP 2 6 R.R 5 IN2 4 NF2 Fin POWER GND 3 BS2 2 OUT2 1 BTL OUT Fig. 1 KA2206B 2.3W DUAL AUDIO POWER AMP ABSOLUTE MAXIMUM RATINGS Characteristic Supply Voltage Power Dissipation Operating Temperature Storage Temperature * Fin is soldering on the PCB Symbol VCC PD T OPR T STG Value 15 4* -20 ~ +70 -40 ~ +150 Unit V W °C °C ELECTRICAL CHARACTERISTICS (Ta = 25°C, VCC = 9V, f = 1KHz RG = 600Ω , unless otherwise specified) Characteristic Operating Supply Voltage Quiescent Circuit Current Closed Loop Voltage Gain Symbol VCC ICCQ GVC VI = 0, Stereo Stereo Bridge Channel Balance CB Stereo Stereo Ouptut Power PO Bridge Total Harmonic Distortion THD Stereo Bridge Input Resistance Ripple Rejection Ratio RI RR Stereo,RG=0Ω , VI=150mW f=100Hz Output Noise Voltage VNO Stereo,RG=0Ω Stereo,RG=10KΩ Cross Talk CT Stereo,RG=10KΩ , VO=0dBm 40 0.3 0.5 55 1.0 2.0 mW mV dB 21 40 RL=4Ω , THD = 10%, RL=8Ω , THD = 10%, RL=8Ω , THD = 10%, PO=250mW, R L = 4Ω VI = -45dBm 43 49 -1 1.7 Test Conditions Min Typ 9 40 45 51 0 2.3 1.3 4.7 0.3 0.5 30 46 1.5 Max 11 55 47 53 +1 Unit V mA dB dB dB W W W % % KΩ dB KA2206B APPLICATION INFORMATION 2.3W DUAL AUDIO POWER AMP 1.Stereo application i) Fixed voltage gain (Pin 9 connected to GND directly) + CH1 9 RF + 8 11 GV = 20 log R1 (dB) R2 R2 R1 ii) Variable voltage gain (Rf and C1 connected with pin 9) GV = 20 log R1 (dB) R2+RF C1 2. Bridge application INPUT 8 + CH1 9 RF + + CH2 R1 5K R4 R3 5 R2 4 C2 C1 1 50 11 + + 2 C4 RL C6 i) Fixed voltage gain (Pin 9 connected to GND directly) GV = 20 log R1 + 6(dB) R2 ii) Variable voltage gain RF and C1 connected with pin 9) GV = 20 log R1 + 6(dB) R2+RF + KA2206B APPLICATION CIRCUIT 1. Stereo Amplifier 2.3W DUAL AUDIO POWER AMP 2. Bridge Amplifier