TDA2822.pdf

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DUAL POWER AMPLIFIER
TDA2822
. SUPPLY VOLTAGE DOWN TO 3 V
DUAL POWER AMPLIFIER
. BRIDGE OR STEREO CONFIGURATION
POWERDIP
(Plastic 12+2+2)
DESCRIPTION
The TDA2822 is a monolithic integrated circuit in
12+2+2 powerdip, intended for use as dual audio
power amplifier in portable radios and TS sets.
ORDERING NUMBER : TDA2822
TYPICAL APPLICATION CIRCUIT (STEREO)
March 1995
1/11
. LOW QUIESCENT CURRENT
. LOW CROSSOVER DISTORSION
20664580.002.png
TDA2822
PIN CONNECTION (top view)
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V s
Supply Voltage
15
V
I o
Output Peak Current
1.5
A
P tot
Total Power Dissipation at T amb =50
°
C
1.25
4
W
W
at T case =70
°
C
T stg ,T j Storage and Junction Temperature
– 40 to 150
°
C
2/11
20664580.003.png
TDA2822
THERMAL DATA
Symbol
Parameter
Value
Unit
R th j-amb
R th j-case
Thermal Resistance Junction-ambient
Thermal Resistance Junction-pins
Max
Max
80
20
°
C/W
°
C/W
ELECTRICAL CHARACTERISTICS (Vs = 6 V, T amb =25 ° C, unless otherwise specified)
STEREO (test circuit of fig. 1)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V s
Supply Voltage
3
15
V
V c
Quiescent Output Voltage
V s =9V
V s =6V
4
2.7
V
V
I d
Quiescent Drain Current
6
12
mA
I b
Input Bias Current
100
nA
P o
Output Power
(each channel)
d = 10 % f = 1 kHz
V s =9V R L =4
W
1.3
0.45
1.7
0.65
0.32
W
W
W
W
V s = 4.5 V R L =4
W
G v
Closed Loop Voltage Gain
f = 1 kHz
36
39
41
dB
R i
Input Resistance
f = 1 kHz
100
k
W
e N
Total Input Noise
W
B = 22 Hz to 22 kHz
Curve A
2.5
2
m
V
m
V
SVR
Supply Voltage Rejection
f = 100 Hz
24
30
dB
CS
Channel Separation
R g =10k
W
f = 1 kHz
50
dB
BRIDGE (test circuit of fig. 2)
V s
Supply Voltage
3
15
V
I d
Quiescent Drain Current
R L =
8
6
12
A
V os
Output Offset Voltage
R L =8
W
10
60
mV
I b
Input Bias Current
100
nA
P o
Output Power
d = 10 % f = 1 kHz
V s =9V R L =8
W
V s =6V R L =8
2.7
0.9
3.2
1.35
1
W
W
W
W
V s = 4.5 V R L =4
W
d
Distortion (f = 1 kHz)
R L =8
W
P o = 0.5 W
0.2
%
G v
Closed Loop Voltage Gain
f = 1 kHz
39
dB
R i
Input Resistance
f = 1 kHz
100
k
W
e N
Total Input Noise
W
B = 22 Hz to 22 kHz
Curve A
3
2.5
m
V
m
V
SVR
Supply Voltage Rejection
f = 100 Hz
40
dB
3/11
V s =6V R L =4
R s =10k
R s =10k
20664580.004.png
TDA2822
Figure 1 : Test Circuit (stereo).
Figure 2 : P.C. Board and Components Layout of the Circuit of Figure 1 (1:1 scale).
4/11
20664580.005.png
TDA2822
Figure 3 : Test Circuit (bridge).
Figure 4 : P.C. Board and Components Layout of the Circuit of Figure 3 (1:1 scale).
5/11
20664580.001.png

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