Features
■ Improved performance over the TDA2002 (pin-
to-pin compatible)
■ Very low number of external components
■ Ease of assembly
■ Cost and space savings
TDA2003A
10 W car radio audio amplifier
Datasheet − production data
Description
The TDA2003A is capable of providing a high
output current (up to 3.5 A) with very low
harmonic and crossover distortion.
Completely safe operation is guaranteed due to
DC and AC short-circuit protection between all
pins and ground, a thermal limiting circuit, load
dump voltage surge protection up to 40 V and
protection diodes in case of accidental open
ground.
Table 1. Device summary
Order code Package Packing
TDA2003AV Pentawatt (vertical) Tube
TDA2003AH Pentawatt (horizontal) Tube
Pentawatt Pentawatt
(vertical) (horizontal)
July 2012 Doc ID 018796 Rev 4 1/19
This is information on a product in full production.
www.st.com
1
Contents TDA2003A
Contents
1 Schematic, test circuits and pin connections . . . . . . . . . . . . . . . . . . . . 5
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Built-in protection systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.1 Load dump voltage surge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.2 Short-circuit (AC and DC conditions) . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.3 Polarity inversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.4 Open ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.5 Inductive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.6 DC voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.7 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Practical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.1 Printed circuit board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.2 Assembly recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.3 Application recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19 Doc ID 018796 Rev 4
TDA2003A List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5. Recommended values of the components of a bridge application circuit . . . . . . . . . . . . . . 15
Table 6. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Doc ID 018796 Rev 4 3/19
List of figures TDA2003A
List of figures
Figure 1. Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. DC test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. AC test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 4. Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5. Quiescent output voltage vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 6. Quiescent drain current vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 7. Output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 8. Output power vs. load resistance R
Figure 9. Gain vs. input sensitivity (RL = 4 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 10. Gain vs. input sensitivity (R
= 2 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
L
Figure 11. Distortion vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 12. Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 13. Supply voltage rejection vs. voltage gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 14. Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 15. Power dissipation and efficiency vs. output power (R
Figure 16. Power dissipation and efficiency vs. output power (R
Figure 17. Maximum power dissipation vs. supply voltage (sine wave operation). . . . . . . . . . . . . . . . 11
Figure 18. Maximum allowable power dissipation vs. ambient temperature . . . . . . . . . . . . . . . . . . . . 11
Figure 19. Typical values of capacitor (C
Figure 20. Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 21. Printed circuit board and component layout for typical application circuit. . . . . . . . . . . . . . 12
Figure 22. Voltage gain bridge configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 23. Suggested LC network circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 24. Output power and drain current vs. case temperature (R
Figure 25. Output power and drain current vs. case temperature (R
Figure 26. Pentawatt (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . 16
Figure 27. Pentawatt (horizontal) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 17
L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
= 4 Ω) . . . . . . . . . . . . . . . . . . . . . . 10
L
= 2 Ω) . . . . . . . . . . . . . . . . . . . . . . 10
L
) for different values of frequency response (B). . . . . . . . . 11
X
= 4 Ω) . . . . . . . . . . . . . . . . . . . 14
L
= 2 Ω) . . . . . . . . . . . . . . . . . . . 14
L
4/19 Doc ID 018796 Rev 4
TDA2003A Schematic, test circuits and pin connections
1 Schematic, test circuits and pin connections
Figure 1. Schematic diagram
Figure 2. DC test circuit
Figure 3. AC test circuit
Doc ID 018796 Rev 4 5/19
Schematic, test circuits and pin connections TDA2003A
Figure 4. Pin connections (top view)
6/19 Doc ID 018796 Rev 4
TDA2003A Electrical specifications
2 Electrical specifications
2.1 Absolute maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
Vs Peak supply voltage (50 ms) 40 V
Vs DC supply voltage 28 V
Vs Operating supply voltage 18 V
Io Output peak current (non-repetitive) 4.5 A
Io Output peak current (repetitive) 3.5 A
P
tot
T
, T
stg
Power dissipation at T
Storage and junction temperature -40 to 150 °C
j
2.2 Thermal data
= 90 °C 20 W
case
Table 3. Thermal data
Symbol Parameter Value Unit
R
th-j-case
Thermal resistance junction-to-case max 3 °C/W
Doc ID 018796 Rev 4 7/19
Electrical specifications TDA2003A
2.3 Electrical characteristics
Vs = 14.4 V, T
Table 4. Electrical characteristics
= 25 °C unless otherwise specified.
amb
Symbol Parameter Test condition Min. Typ. Max. Unit
DC characteristics (refer to DC test circuit)
V
Supply voltage - 8 - 18 V
S
Quiescent output voltage (pin 4) - 6.1 6.9 7.7 V
V
O
Quiescent drain current (pin 5) - - 44 50 mA
I
d
AC characteristics (refer to DC test circuit)
d = 10%; f = 1 kHz
R
V
P
o
i(rms)
= 4 Ω
L
Output power
= 2 Ω
R
L
= 3.2 Ω
R
L
= 1.6 Ω
R
L
Input saturation voltage - 300 mV
5.5
9
6
10
7.5
12
-W
f = 1 kHz
14
55
10
50
-mW
V
Input sensitivity
i
B Frequency response (-3 dB) R
= 4 Ω; Po = 0.5 W;
R
L
= 4 Ω; Po = 6 W
R
L
-
RL = 2 Ω; Po = 0.5 W;
= 2 Ω; Po = 10 W;
R
L
= 4 Ω; Po = 1 W; 40 to 15,000 Hz
L
f = 1 kHz
d Distortion
Input resistance f = 1 kHz 70 150 - kΩ
R
i
Gv Voltage gain (open loop)
R
= 4 Ω; Po = 0.05 to 4.5 W;
L
= 2 Ω; Po = 0.05 to 7.5 W;
R
L
f = 1 kHz;
f = 10 kHz
-0.15
0.15
-
80
60
-
-
%
dB
dB
Gv Voltage gain (closed loop) f = 1 kHz; R
(1)
(1)
--15µV
- - 60 200 pA
Input noise voltage
e
N
Input noise current
i
N
= 4 Ω 39.3 40 40.3 dB
L
f = 1 kHz
h Efficiency
SVR Supply voltage rejection
1. Filter with noise bandwidth: 22 Hz to 22 kHz.
R
= 4 Ω; Po = 6 W;
L
= 2 Ω; Po = 10 W;
R
L
f = 100 Hz; V
= 10 kΩ; RL = 4 Ω;
R
g
ripple
= 0.5 V;
8/19 Doc ID 018796 Rev 4
-6965-%
%
30 36 - dB
TDA2003A Electrical specifications
2.4 Electrical characteristics curves
Figure 5. Quiescent output voltage vs.
supply voltage
Figure 7. Output power vs. supply voltage Figure 8. Output power vs. load resistance
Figure 6. Quiescent drain current vs.
supply voltage
R
L
Figure 9. Gain vs. input sensitivity (RL = 4 Ω) Figure 10. Gain vs. input sensitivity (RL = 2 Ω)
Doc ID 018796 Rev 4 9/19
Electrical specifications TDA2003A
Figure 11. Distortion vs. output power Figure 12. Distortion vs. frequency
Figure 13. Supply voltage rejection vs.
voltage gain
Figure 15. Power dissipation and efficiency
vs. output power (R
= 4 Ω)
L
Figure 14. Supply voltage rejection vs.
frequency
Figure 16. Power dissipation and efficiency
vs. output power (RL = 2 Ω)
10/19 Doc ID 018796 Rev 4
TDA2003A Electrical specifications
Figure 17. Maximum power dissipation vs.
supply voltage (sine wave
operation)
Figure 19. Typical values of capacitor (CX) for
different values of frequency
response (B)
Figure 18. Maximum allowable power
dissipation vs. ambient
temperature
Doc ID 018796 Rev 4 11/19
Application information TDA2003A
3 Application information
Figure 20. Typical application circuit
Figure 21. Printed circuit board and component layout for typical application circuit
3.1 Built-in protection systems
3.1.1 Load dump voltage surge
The TDA2003A has a circuit which enables it to withstand a voltage pulse train, on pin 5, of
the type shown in Figure 23.
If the supply voltage peaks to more than 40 V, then an LC filter must be inserted between
the supply and pin 5, in order to ensure that the pulses at pin 5 will be held within the limits
shown in Figure 22.
A recommended LC network is shown in Figure 23. With this network, a train of pulses with
amplitude up to 120 V and width of 2 ms can be applied at point A.
This type of protection is ON when the supply voltage (pulsed or DC) exceeds 18 V. For this
reason the maximum operating supply voltage is 18 V.
12/19 Doc ID 018796 Rev 4
TDA2003A Application information
Figure 22. Voltage gain bridge configuration
Figure 23. Suggested LC network circuit
3.1.2 Short-circuit (AC and DC conditions)
The TDA2003A can withstand a permanent short-circuit on the output for a supply voltage
up to 16 V.
3.1.3 Polarity inversion
High current (up to 5 A) can be handled by the device with no damage for a longer period
than the blow-out time of a quick 1 A fuse (normally connected in series with the supply).
This feature is added to avoid destruction if, during fitting to the car, a mistake on the
connection of the supply is made.
3.1.4 Open ground
When the radio is in the ON condition and the ground is accidentally opened, a standard
audio amplifier will be damaged. On the TDA2003A, protection diodes are included to avoid
any damage.
3.1.5 Inductive load
A protection diode is provided between pin 4 and 5 (see the internal schematic diagram) to
allow use of the TDA2003A with inductive loads. In particular, the TDA2003A can drive a
coupling transformer for audio modulation.
3.1.6 DC voltage
The maximum operating DC voltage on the TDA2003A is 18 V, however the device can
withstand a DC voltage up to 28 V with no damage. This could occur during winter if two
batteries were connected in series to crank the engine.
Doc ID 018796 Rev 4 13/19
Application information TDA2003A
3.1.7 Thermal shutdown
The presence of a thermal limiting circuit offers the following advantages:
1. An overload on the output (even if it is permanent), or an excessive ambient
temperature can be easily withstood.
2. The heatsink can have a smaller factor compared with that of a conventional circuit.
There is no damage to the device in the case of excessive junction temperature: only
P
(and therefore P
o
Figure 24. Output power and drain current vs.
case temperature (R
) and Id are reduced.
tot
= 4 Ω)
L
Figure 25. Output power and drain current vs.
case temperature (RL = 2 Ω)
3.2 Practical considerations
3.2.1 Printed circuit board
The layout shown in Figure 21 is recommended. If different layouts are used, the ground
points of input 1 and input 2 must be well decoupled from the ground of the output through
which a rather high current flows.
3.2.2 Assembly recommendations
No electrical insulation is required between the package and the heatsink. Pin length should
be as short as possible. The soldering temperature must not exceed 260 °C for 12 seconds.
14/19 Doc ID 018796 Rev 4
TDA2003A Application information
3.2.3 Application recommendations
The recommended component values are those shown in the application circuit in
Figure 20. Different values can be used. The following table is intended to aid the car-radio
designer.
Table 5. Recommended values of the components of a bridge application circuit
Component
C1 2.2 µF Input DC decoupling - Noise at switch-on, switch-off
C2 470 µF Ripple rejection - Degradation of SVR
C3 0.1 µF Supply bypassing - Danger of oscillation
C4 1000 µF Output coupling to load - Higher low frequency cutoff
C5 0.1 µF Frequency stability -
C
X
R1 (Gv-1)
R2 2.2 Ω Setting of gain and SVR Degradation of SVR -
R3 1 Ω Frequency stability
R
x
Recommended
value
1
-------------------
≅ Upper frequency cutoff Lower bandwidth Larger bandwidth
2πBR1
Purpose
. R2 Setting of gain - Increase of drain current
≅ 20 R2 Upper frequency cutoff
Larger than
recommended value
Danger of oscillation
at high frequencies
with inductive loads
Poor high frequency
attenuation
Smaller than
recommended value C1
Danger of oscillation at high
frequencies with inductive
loads
-
Danger of oscillation
Doc ID 018796 Rev 4 15/19
Package information TDA2003A
4 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK
®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
is an ST trademark.
Figure 26. Pentawatt (vertical) mechanical data and package dimensions
DIM.
A 4.80 0.188
C 1.37 0.054
D 2.40 2.80 0.094 0.11
D1 1.20 1.35 0.047 0.053
E 0.35 0.55 0.014 0.022
E1 0.76 1.19 0.030 0.047
F 0.80 1.05 0.031 0.041
F1 1.00 1.40 0.039 0.055
G 3.20 3.40 3.60 0.126 0.134 0.142
G1 6.60 6.80 7.00 0.260 0.267 0.275
H2 10.40 0.41
H3 10.40 0.409
L 17.55 17.85 18.15 0.691 0.703 0.715
L1 15 .55 15.75 15.95 0.612 0.620 0.628
L2 21.2 21.4 21.6 0.831 0.843 0.850
L3 22.3 22.5 22.7 0.878 0.886 0.894
L4 1.29 0.051
L5 2.60 3.00 0.102 0.118
L6 15 .10 15.80 0.594 0.622
L7 6.00 6.60 0.236 0.260
L9 2.10 2.70 0.083 0.106
L10 4.30 4.80 0.170 0.189
M 4.23 4. 5 4.75 0.167 0.178 0.187
M1 3.75 4.0 4.25 0.148 0.157 0.1 87
V4 40° (Typ.)
V5 90° (Typ.)
DIA 3.65 3.85 0.143 0.151
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
OUTLINE AND
MECHANICAL DATA
Weight: 2.00gr
Pentawatt V
L
L1
A
C
D1
L5
H3
Dia.
L9
L10
L7
L6
D
L2
L3
L4
RESIN BETWEEN
16/19 Doc ID 018796 Rev 4
V5
F1
LEADS
H2
E
M1
M
H2
F
E1
V4
GG1
F
V4
E
PENTVME
0015981
TDA2003A Package information
Figure 27. Pentawatt (horizontal) mechanical data and package dimensions
DIM.
A 4.80 0.188
C 1.37 0.054
D 2.40 2.80 0.094 0.11
D1 1.20 1.35 0.047 0.053
E 0.35 0.55 0.014 0.022
F 0.80 1.05 0.031 0.041
F1 1.00 1.40 0.039 0.055
G 3.20 3.40 3.60 0.126 0.134 0.142
G1 6.60 6.80 7.00 0.260 0.267 0.275
H2 10.40 0.41
H3 10.05 10.40 0.395 0.409
L 14.20 15.00 0.56 0.59
L1 5.70 6.20 0.224 0.244
L2 14 .60 15.20 0.574 0.598
L3 3.50 4.10 0.137 .161
L4 1.29 0.05
L5 2.60 3.00 0.102 0.118
L6 15 .10 15.80 0.594 0.622
L7 6.00 6.60 0.236 0.260
L9 2.10 2.70 0.083 0.106
L10 4.30 4.80 0.170 0.189
DIA 3.65 3.85 0.143 0.151
mm inch
MIN. T YP. MAX. MIN. TYP. MAX.
L
OUTLINE AND
MECHANICAL DATA
Pentawatt H
D
E
L3 L2
L4
F1
Resin between
leads
D1
CA
L1
F
L7
L5
H3
Dia.
L9
L6
L10
G
G1
H2
PENTHME.EPS
0015982
Doc ID 018796 Rev 4 17/19
Revision history TDA2003A
5 Revision history
Table 6. Document revision history
Date Revision Changes
02-May-2011 1 Initial release.
14-Jun-2011 2
Removed minimum value from Pentawatt (vertical) package
dimension H3 (Figure 26).
05-Jul-2012 3 Updated frequency response in Table 4: Electrical characteristics
23-Jul-2012 4 Updated eN (max) in Table 4: Electrical characteristics
18/19 Doc ID 018796 Rev 4
TDA2003A
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Doc ID 018796 Rev 4 19/19
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