TDA2003 ,10W CAR RADIO AUDIO AMPLIFIERTDA2003®10W CAR RADIO AUDIO AMPLIFIERDESCRIPTIONThe TDA 2003 has improved performance with thesame
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TDA2003-TDA2003#-TDA2003.-TDA2003..
10W CAR RADIO AUDIO AMPLIFIER
TDA200310W CAR RADIO AUDIO AMPLIFIER
DESCRIPTIONThe TDA 2003 has improved performance with the
same pin configuration as the TDA 2002.
The additional features of TDA 2002, very low
number of external components, ease of assembly,
space and cost saving, are maintained.
The device provides a high output current capability
(up to 3.5A) very low harmonic and cross-over
distortion.
Completely safe operation is guaranteed due to
protection against DC and AC short circuit between
all pins and ground, thermal over-range, load dump
voltage surge up to 40V and fortuitous open
ground.
October 1998
ABSOLUTE MAXIMUM RATINGS
TEST CIRCUIT1/10
THERMAL DATA2/10
PIN CONNECTION (top view)
SCHEMATIC DIAGRAM
TDA2003
DC CHARACTERISTICS (Refer to DC test circuit)
AC CHARACTERISTICS (Refer to AC test circuit, Gv = 40 dB)
ELECTRICAL CHARACTERISTICS ( Vs = 14.4V , Tamb = 25 °C unless otherwise specified)
DC TEST CIRCUIT AC TEST CIRCUIT3/10
TDA2003
4/10
Figure 1. Quiescent output
voltage vs. supply voltage
Figure 2. Quiescent drain
current vs. supply voltage
Figure 3. Output power vs.
supply voltage
ELECTRICAL CHARACTERISTICS (continued)(0) Filter with noise bandwidth: 22 Hz to 22 kHz
TDA2003
Figure 4. Output power vs.
load resistance RL
Figure 5. Gain vs. input
sensivity
Figure 6. Gain vs. input
sensivity
Figure 7. Distortion vs.
output power
Figure 8. Distor tion vs.
frequency
Figure 9. Supply voltage
rejection vs. voltage gain
Figure 10. Supply voltage
rejection vs. frequency
Figure 11. Power dissipa-
tion and efficiency vs. output
power (RL = 4Ω)
Figure 12. Power dissipa-
tion and efficiency vs. output
power (RL = 2Ω) 5/10
TDA2003
6/10
Figure 13. Maximum power
dissipation vs. supply voltage
(sine wave operation)
Figure 14. Maximum allowable
power dissipation vs. ambient
temperature
Figure 15. Typical values of
capacitor (CX) for different
values of frequency reponse
(B)
Figure 16. Typical application
circuit
Figure 17. P.C. board and component layout for the circuit of
fig. 16 (1 : 1 scale)
APPLICATION INFORMA TION
BUILT -IN PROTECTION SYSTEMS
Load dump voltage surgeThe TDA 2003 has a circuit which enables it to
withstand a voltage pulse train, on pin 5, of the type
shown in fig. 19.
If the supply voltage peaks to more than 40V , then
an LC filter must be inserted between the supply
and pin 5, in order to assure that the pulses at pin
5 will be held within the limits shown in fig. 18.
A suggested LC network is shown in fig. 19. With
this network, a train of pulses with amplitude up to
120V 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 18V . For this reason
the maximum operating supply voltage is 18V.
TDA2003
