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KA2209B DUAL LOW VOLTAGE POWER AMP
INTRODUCTION
8-DIP-300
The KA2209B is a monolithic integrated audio amplifier in a 8-pin
plastic dual in line package. It is designed for portable cassette
player and radio.
FEATURES
•
Wide operating supply voltage: V
CC
= I.8V ~ 9V
•
Low crossover distortion
•
Low quiescent circuit current
•
Bridge/stereo configuration
ORDERING INFORMATION
Device
Package
Operating Temperature
BLOCK DIAGRAM
KA2209B
8-DIP-300
-20
C ~ +70
C
NF1 IN1
IN2
NF2
8
7
6
5
- +
- +
BIAS
CIRCUIT
1
2
3
4
Fig. 1
OUT1 Vcc OUT2 GND
Characteristic
Symbol
Value
Unit
Supply Voltage
Output Peak Current
V
CC
I
PK
15
1
at T
AMB
= 50
C 1.0
at T
CASE
= 50
C 1.4
-20 ~ + 70
-40 ~ +150
V
A
Power Dissipation
P
D
W
Operating Temperature
Storage Temperature
T
OPR
T
STG
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
Max
Unit
Operating Voltage
Vcc
1.8
9
V
Quiescent Circuit Current
I
CCQ
V
I
= 0
9
mA
Gvc
Stereo
40
dB
Closed Loop Voltage Gain
Bridge
40
dB
Channel Balance
C
B
Stereo
- 1
0
1
dB
V
CC
= 6V, R
L
= 4
W
, THD=10%
0.4
0.65
W
Stereo
V
CC
= 3V, R
L
= 4
W
, THD=10%
0.11
W
P
O
V
CC
= 6V, R
L
= 8
W
, THD=10%
0.9
1.35
W
Output Power
Bridge
V
CC
= 3V, R
L
= 4
W
, THD=10%
0.35
W
Stereo, R
L
= 8
W
, P
O
= 0.2W
0.5
%
THD
Total Harmonic Distortion
Bridge, R
L
= 8
W
, P
O
= 0.5W
0.5
%
Ripple Rejection Ratio
RR Stereo, f =100HZ, C
3
= 100uF
24
30
dB
Output Noise Voltage
V
NO
Stereo, BW(-3dB) = 20Hz ~ 20KHz
0.5
2.0
mV
Cross Talk
CT
Stereo, f =1KHZ
50
dB
Input Resistance
R
I
100
K
W
KA2209B DUAL LOW VOLTAGE POWER AMP
APPLICATION CIRCUIT
1.STEREO
5
4
100u
470
u
3
6
IN2
OUT2
10K
0.1u
R
L
7
2
IN1
4.7
V
CC
10K
100u
8
1
OUT1
470u
0.1u
R
L
100u
4.7
Fig. 2
2. BRIDGE
0.01u
5
-
+
4
10u
6
3
0.1u
4.7
7
2
V
CC
R
L
INPUT
-
+
100u
10K
8
1
0.1u
4.7
Fig. 3
Plik z chomika:
jj63
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