SAMSUNG KS2206B

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