TDA2822M
DUAL LOW-VOLTAGE POWER AMPLIFIER
March 1995
PIN CONNECTION (Top view)
MINIDIP
ORDERING NUMBER : TDA2822M
.
SUPPLY VOLTAGE DOWN TO 1.8V
.
LOW CROSSOVER DISTORSION
.
LOW QUIESCENT CURRENT
.
BRIDGE OR STEREO CONFIGURATION
DESCRIPTION
The TDA2822M is a monolithic integrated circuit in
8 lead Minidip package. It is intended for use as
dual audio power amplifier in portable cassette
players and radios.
1/11
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
s
Supply Voltage
15
V
I
o
Peak Output Current
1
A
P
tot
Total Power Dissipation at T
amb
= 50
C
at T
case
= 50
C
1
1.4
W
W
T
stg
, T
j
Storage and Junction Temperature
40, + 150
C
THERMAL DATA
Symbol
Parameter
Value
Unit
R
th j-amb
Thermal Resistance Junction-ambient
Max.
100
C/W
R
th j-case
Thermal Resistance Junction-pin (4)
Max.
70
C/W
TDA2822M
2/11
ELECTRICAL CHARACTERISTICS (V
S
= 6V, T
amb
= 25
o
C, unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
STEREO (test circuit of Figure 1)
V
s
Supply Voltage
1.8
15
V
V
o
Quiescent Output Voltage
V
s
= 3V
2.7
1.2
V
V
I
d
Quiescent Drain Current
6
9
mA
I
b
Input Bias Current
100
nA
P
o
Output Power (each channel)
(f = 1kHz, d = 10%)
R
L
= 32
V
S
= 9V
V
S
= 6V
V
S
= 4.5V
V
S
= 3V
V
S
= 2V
R
L
= 16
V
S
= 6V
R
L
= 8
V
S
= 9V
V
S
= 6V
R
L
= 4
V
S
= 6V
V
S
= 4.5V
V
S
= 3V
90
15
170
300
450
300
120
60
20
5
220
1000
380
650
320
110
mW
d
Distortion (f = 1kHz)
R
L
= 32
P
o
= 40mW
R
L
= 16
P
o
= 75mW
R
L
= 8
P
o
= 150mW
0.2
0.2
0.2
%
%
%
G
v
Closed Loop Voltage Gain
f = 1kHz
36
39
41
dB
G
v
Channel Balance
1
dB
R
i
Input Resistance
f = 1kHz
100
k
e
N
Total Input Noise
R
s
= 10k
B = Curve A
B = 22Hz to 22kHz
2
2.5
V
V
SVR
Supply Voltage Rejection
f = 100Hz, C1 = C2 = 100
F
24
30
dB
C
s
Channel Separation
f = 1kHz
50
dB
BRIDGE (test circuit of Figure 2)
V
s
Supply Voltage
1.8
15
V
I
d
Quiescent Drain Current
R
L
=
6
9
mA
V
os
Output Offset Voltage
(between the outputs)
R
L
= 8
50
mV
I
b
Input Bias Current
100
nA
P
o
Output Power (f = 1kHz, d = 10%)
R
L
= 32
V
S
= 9V
V
S
= 6V
V
S
= 4.5V
V
S
= 3V
V
S
= 2V
R
L
= 16
V
S
= 9V
V
S
= 6V
V
S
= 3V
R
L
= 8
V
S
= 6V
V
S
= 4.5V
V
S
= 3V
R
L
= 4
V
S
= 4.5V
V
S
= 3V
V
S
= 2V
320
50
900
200
1000
400
200
65
8
2000
800
120
1350
700
220
1000
350
80
mW
d
Distortion
P
o
= 0.5W, R
L
= 8
, f = 1kHz
0.2
%
G
v
Closed Loop Voltage Gain
f = 1kHz
39
dB
R
i
Input Resistance
f = 1kHz
100
k
e
N
Total Input Noise
R
s
= 10k
B = Curve A
B = 22Hz to 22kHz
2.5
3
V
V
SVR
Supply Voltage Rejection
f = 100Hz
40
dB
B
Power Bandwidth (3dB)
R
L
= 8
, P
o
= 1W
120
kHz
TDA2822M
3/11
Figure 1 : Test Circuit (Stereo)
Figure 2 : Test Circuit (Bridge)
Figure 3 :
P.C. Board and Components Layout
of the Circuit of Figure 1
Figure 4 :
P.C. Board and Components Layout
of the Circuit of Figure 2
TDA2822M
4/11
Figure 5 :
Quiescent Current versus
Supply Voltage
Figure 6 :
Supply Voltage Rejection versus
Frequency
Figure 8 :
Distorsion versus Output Power
(Stereo)
Figure 7 :
Output Power versus Supply Voltage
(THD = 10%, f = 1kHz Stereo)
Figure 9 :
Distorsion versus Output Power
(Stereo)
Figure 10 : Output Power versus Supply Voltage
(Bridge)
TDA2822M
5/11
PDF 
ZIP