TDA2008.PDF

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12W AUDIO AMPLIFIER (VS = 22V, RL = 4OHMS)
TDA2008
12W AUDIO AMPLIFIER (V s = 22V, R L =4
W
)
DESCRIPTION
The TDA2008 is a mololithic class B audio power
amplifier in Pentawatt [ package designed for driv-
ing low impedence loads (down to 3.2 W ). The divice
provides a high output current capability(up to 3A),
very low harmonic and crossover distortion.
In addition, the device offers the following features:
– very low number of external components;
– assembly ease, due to Pentawatt [ power
package with no electrical insulations re-
quirements;
– space and cost saving;
– high reliability;
– flexibility in use;
– thermal protection.
Pentawatt
ORDERING NUMBER : TDA 2008V
TYPICAL APPLICATION CIRCUIT
March 1993
1/9
11044816.002.png
TDA2008
PIN CONNECTION (top view)
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V s
DC supply voltage
28
V
I o
Output peak current (repetitive)
3
A
I o
Output peak current ( non repetitive)
4
A
P tot
Power dissipation at T case =90
°
C
20
W
T stg ,T j Storage and junction temperature
- 40 to 150
C
SCHEMATIC DIAGRAM
2/9
°
11044816.003.png
TDA2008
DC TEST CIRCUIT
AC TEST CIRCUIT
3/9
11044816.004.png
TDA2008
THERMAL DATA
Symbol
Parameter
Value
Unit
R th-j-case
Thermal resistance junction-case
max
3
°
C/W
ELECTRICAL CHARACTERISTICS ( Refer to the test circuit, V s = 18V, T amb =25
°
C unless otherwise
specified)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
V s
Supply voltage
10
28
V
V o
Quiescent output voltage
(pin 4)
10.5
V
I d
Quiescent drain current
(pin 5)
65
115
mA
P o
Output power
d = 10%
R L =8
W
8
W
f = 1 KHz
R L =4
W
10
12
W
V i (RMS) Input saturation voltage
300
mV
V i
Input sensitivity
f = 1 KHz
P o = 0.5W
P o =8W
P o = 0.5W
P o = 12W
W
R L =8
20
80
14
70
mV
mV
mV
mV
W
R L =4
W
R L =4
W
B
Frequency response
(-3 dB)
P o =1W
R L =4
40 to 15,000
Hz
W
d
Distortion
f = 1 KHz
P o = 0.05 to 4W
P o = 0.05 to 6W
W
R L =4
0.12
0.12
1
1
%
%
W
R i
Input resistance (pin 1)
f = 1 KHz
70
150
K
W
G v
Voltage gain (open loop)
f = 1 KHz
R L =8
W
80
dB
G v
Voltage gain (closed loop)
39.5
40
40.5
dB
e N
Input noise voltage
BW = 22Hz to 22 KHz
1
5
m
V
i N
Input noise current
60
200
pA
SVR
Supply voltage rejection
V ripple = 0.5
R g = 10K
f = 100 Hz
30
36
dB
W
R L =4
W
4/9
R L =8
R L =8
11044816.005.png
TDA2008
APPLICATION INFORMATION
Figure 1. Typical application circuit
Figure 2. P.C. board and component layout for
the circuit of fig. 1 (1:1 scale)
Figure 3. 25W bridge configuration applica- tion
circuit (
°
Figure 4. P.C. board and component layout for the
circuit of fig. 3 (1:1 scale)
°
) The value of the capacitorr C3 and C4 are different to optimize
the SVR (Typ. = 40 dB)
5/9
)
(
11044816.001.png

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