TDA2824
January 1995
DUAL POWER AMPLIFIER
.
SUPPLY VOLTAGE DOWN TO 3 V
.
HIGH SVR
.
LOW CROSSOVER DISTORTION
.
LOW QUIESCENT CURRENT
.
BRIDGE OR STEREO CONFIGURATION
DESCRIPTION
The TDA2824 is a monolithic integrated circuit in
12+2+2 powerdip, intended for use as dual audio
power amplifier in portable radios and TV sets.
Powerd ip (12+2+2)
ORDERING NUMBER : TDA2824
TYPICAL APPLICATION CIRCUIT (Stereo)
R2
1/10
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
Supply Voltage
16
V
I
O
Output Peak Current
1.5
A
P
tot
Total Power Dissipation at T
amb
= 50
C
T
amb
= 70
C
1.25
4
W
W
T
stg
, T
j
Storage and Junction Temperature
-40 to 150
C
PIN CONNECTION
TDA2824
2/10
THERMAL DATA
Symbol
Parameter
Val ue
Un it
R
th j-amb
Thermal Resistance Junction-ambient
Max.
80
C/W
R
th j-case
Thermal Resistance Junction-case
Max.
20
C/W
ELECTRICAL CHARACTERISTICS (V
S
= 6V, T
amb
= 25
C, unless otherwise specified)
Symbol
Parameter
Test Co ndi ti ons
Mi n.
Typ .
Max.
Un it
STEREO (test circuit of fig. 1)
V
S
Supply Voltage
3
15
V
V
O
Quiescent Output Voltage
V
S
= 9V
V
S
= 9V
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 = 1KHz
V
S
= 9V
R
L
= 4
V
S
= 6V
R
L
= 4
V
S
= 4.5V
R
L
= 4
1.3
0.45
1.7
0.65
0.32
W
W
W
d
Distortion
V
S
= 9V, f = 1KHz
R
L
= 8
, P
O
= 0.5W
0.2
%
G
V
Closed Loop Voltage
Gain
f = 1KHz
36
39
41
dB
R
i
Input Resistance
f = 1KHz
100
K
e
N
Total Input Noise
R
S
= 10K
B = 22Hz to 22KHz
2.5
V
Curve A
2
V
SVR
Supply Voltage Rejection
f = 100Hz
40
50
dB
CS
Channel Separation
R
S
= 10K
f = 1KHz
50
dB
BRIDGE (test circuit of fig. 2)
V
S
Supply Voltage
3
15
V
V
OS
Output Offset Voltage
R
L
= 8
60
mV
I
b
Imput Bias Current
100
nA
P
O
Output Power
d = 10%
V
S
= 9V
V
S
= 6V
V
S
= 4.5V
f = 1KHz
R
L
= 8
R
L
= 8
R
L
= 4
2.5
0.9
3.2
1.35
1
W
W
W
d
Distortion (f = 1KHz)
R
L
= 8
P
O
= 0.5W
0.2
%
G
V
Closed Loop Voltage
Gain
f = 1KHz
39
dB
e
N
Total Input Noise
R
S
= 10K
B = 22Hz to 22KHz
3
mV
Curve A
2.5
V
SVR
Supply Voltage Rejection
f = 100Hz
48
60
dB
TDA2824
3/10
Figure 1 : Test Circuit (stereo).
Figure 2: P.C. Board and Component Layout of the Circuit of Figure 1. (1:1 scale)
R2
TDA2824
4/10
Figure 3 : Test Circuit (bridge).
Figure 4: P.C. Board and Component Layout of the Circuit of Figure 3. (1:1 scale)
TDA2824
5/10
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