TDA2004A
March 1995
10 + 10W STEREO AMPLIFIER FOR CAR RADIO
MULTIWATT11
ORDERING NUMBER : TDA2004A
PIN CONNECTION (top view)
Its main features are :
Low distortion.
Low noise.
High reliability of the chip and of the package with
additional safety during operation thanks to protec-
tions against :
.
OUTPUT AC SHORT CIRCUIT TO GROUND
.
VERY INDUCTIVE LOADS
.
OVERRATING CHIP TEMPERATURE
.
LOAD DUMP VOLTAGE SURGE
.
FORTUITOUS OPEN GROUND
Space and cost saving : very low number of exter-
nal components, very simple mounting system with
no electrical isolation between the package and the
heatsink.
DESCRIPTION
The TDA2004A is a class B dual audio power am-
plifier in MULTIWATT
package specifically desi-
gned for car radio applications ; stereo amplifiers are
easily designed using this device that provides a
high current capability (up to 3.5 A) and that can dri-
ve very low impedance loads (down to 1.6
).
1/10
THERMAL DATA
Symbol
Parameter
Value
Unit
R
th j-case
Thermal Resistance Junction-case
Max.
3
C/W
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
Opearting Supply Voltage
18
V
V
S
DC Supply Voltage
28
V
V
S
Peak Supply Voltage (for 50ms)
40
V
I
O
(*)
Output Peak Current (non repetitive t = 0.1ms)
4.5
A
I
O
(*)
Output Peak Current (repetitive f
10Hz)
3.5
A
P
tot
Power Dissipation at T
case
= 60
C
30
W
T
j
, T
stg
Storage and Junction Temperature
40 to 150
C
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, T
amb
= 25
C, G
V
= 50dB,
Rt
h (heatsink)
= 4
C/W, unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
S
Supply Voltage
8
18
V
V
O
Quiescent Output Voltage
VS = 14.4V
V
S
= 13.2V
6.6
6.0
7.2
6.6
7.8
7.2
V
V
I
d
Total Quiescent Drain Current
V
S
= 14.4V
V
S
= 13.2V
65
62
120
120
mA
mA
I
SB
Stand-by Current
Pin 3 grounded
5
mA
P
O
Output Power (each channel)
f = 1KHz, d = 10%
V
S
= 14.4V
R
L
= 4
R
L
= 3.2
R
L
= 2
R
L
= 1.6
6
7
9
10
6.5
8
10(*)
11
W
W
W
W
V
S
= 13.2V
R
L
= 3.2
R
L
= 1.6
6
9
6.5
10
w
w
V
S
= 16V; R
L
= 2
12
w
d
Distortion (each channel)
f = 1KHz
V
S
= 14.4V; R
L
= 4
P
O
= 50mW to 4W
V
S
= 14.4V; R
L
= 2
P
O
= 50mW to 6W
V
S
= 13.2V; R
L
= 3.2
P
O
= 50mW to 3W
V
S
= 13.2V; R
L
= 1.6
P
O
= 50mW to 6W
0.2
0.3
0.2
0.3
1
1
1
1
%
%
%
%
CT
Cross Talk
V
S
= 14.4V
V
O
= 4Vrms R
L
= 4
f = 1KHz
f = 10KHz R
g
= 5K
50
40
60
45
dB
dB
V
i
Input Saturation Voltage
300
mV
(*) The max. output current is internally limited.
TDA2004A
2/10
Notes : (*) 9.3W without Bootstrap
(**) Bandwith Filter : 22Hz to 22KHz.
ELECTRICAL CHARACTERISTICS (continued
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
R
i
Input Resistance (non inverting input) f = 1KHz
70
200
K
f
L
Low Frequency Roll off (-3dB)
R
L
= 4
R
L
= 2
R
L
= 3.2
R
L
= 1.6
35
50
40
55
Hz
Hz
Hz
Hz
f
H
High Frequency Roll off (-3dB)
R
L
= 1.6
to 4
15
KHz
G
V
Voltage gain (open loop)
f = 1KHz
90
dB
Voltage gain (closed loop)
f = 1KHz
48
50
51
dB
closed loop gain matching
0.5
dB
e
N
Total Input noise Voltage
R
g
= 10K
(**)
1.5
5
V
SVR
Supply Voltage Rejection
f
ripple
= 100Hz; R
g
= 10K
C3 = 10
F V
ripple
= 0.5Vrms
35
45
dB
Efficiency
V
S
= 14.4V f = 1KHz
R
L
= 4
P
O
= 6.5W
R
L
= 2
P
O
= 10W
V
S
= 13.2V f = 1KHZ
R
L
= 3.2
P
O
= 6.5W
R
L
= 1.6
P
O
= 10W
70
60
70
60
%
%
%
%
T
J
Thermal Shutdown Junction
Temperature
145
C
Figure 1 : Test and Application Circuit.
TDA2004A
3/10
Figure 2 : P.C. Board and Component layout of the fig. 1 (scale 1 : 1).
Figure 4 : Quiescent Drain Current vs.
Supply Voltage.
Figure 3 : Quiescent Output Voltage vs.
Supply Voltage.
TDA2004A
4/10
Figure 7 : Output Power vs. Supply Voltage.
Figure 8 : Distortion vs. Frequency.
Figure 6 : Output Power vs. Supply Voltage.
Figure 5 : Distortion vs. Output Power.
Figure 9 : Distortion vs. Frequency.
Figure 10 : Supply Voltage Rejection vs. C
3
.
TDA2004A
5/10
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