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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 = 4. Bridge : PO = 4.7W (Typ) at VCC = 9V, RL = 8 · 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 = 600, 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=0, VI=150mW f=100Hz Output Noise Voltage VNO Stereo,RG=0 Stereo,RG=10K Cross Talk CT Stereo,RG=10K, VO=0dBm 40 0.3 0.5 55 1.0 2.0 mW mV dB 21 40 RL=4, THD = 10%, RL=8, THD = 10%, RL=8, THD = 10%, PO=250mW, R L = 4 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 % % K 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