SGS Thomson Microelectronics TDA2003 Datasheet

TDA2003
10W CAR RADIO AUDIO AMPLIFIER
DESCRIPTION
TheTDA2003 hasimprovedperformancewith the samepin configurationas the TDA2002.
The additional features of TDA 2002, very low numberofexternalcomponents,easeof assembly, spaceand cost saving,are maintained.
Thedeviceprovidesahighoutputcurrentcapability (up to 3.5A) very low harmonic and cross-over distortion.
Completely safe operation is guaranteed due to
ORDERING NUMBERS : TDA 2003H
protectionagainst DCandACshort circuitbetween allpins andground,thermal over-range,loaddump voltage surge up to 40V and fortuitous open ground.
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
S
V
S
V
S
I
O
I
O
Ptot Powerdissipation at Tcase = 90°C20W
T
stg,Tj
Peak supply voltage (50ms) 40 V DC supply voltage 28 V Operating supply voltage 18 V Output peak current (repetitive) 3.5 A Output peak current (non repetitive) 4.5 A
Storage and junction temeperature -40 to 150 °C
PENTAWATT
TDA 2003V
TESTCIRCUIT
October 1998
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TDA2003
PIN CONNECTION
(top view)
SCHEMATICDIAGRAM
THERMAL DATA
Symbol Parameter Value Unit
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R
th-j-case
Thermal resistancejunction-case max 3 °
C/W
DCTESTCIRCUIT ACTESTCIRCUIT
TDA2003
ELECTRICAL CHARACTERISTICS (Vs= 14.4V,T
=25°C unlessotherwise specified)
amb
Symbol Parameter Test conditions Min. Typ. Max. Unit
DC CHARACTERISTICS
V V
I
Supply voltage 8 18 V
s
Quiescent output voltage(pin 4) 6.1 6.9 7.7 V
o
Quiescent drain current (pin 5) 44 50 mA
d
(Referto DC test circuit)
ACCHARACTERISTICS (Refer to AC test circuit, Gv = 40 dB)
V
P
i(rms)
V
Output power d = 10%
o
f = 1 kHz
R R R R
L L L L
=4 =2 = 3.2 = 1.6
Ω Ω
5.5 9
Ω Ω
6
10
7.5 12
Input saturation voltage 300 mV Input sensitivity f = 1 kHz
i
P
o
P
o
P
o
P
o
= 0.5W =6W = 0.5W 10W
R R R R
=4
L
=4
L
=2
L
=2
L
Ω Ω Ω
14 55 10 50
W W W W
mV mV mV mV
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TDA2003
ELECTRICALCHARACTERISTICS (continued)
Symbol Parameter Testconditions Min. Typ. Max. Unit
=1W
P
B Frequency response (-3 dB)
R
o L
=4
40 to 15,000 Hz
d Distortion
R
G
G
e
i
η
Input resistance (pin 1) f = 1 kHz 70 150
i
Voltagegain (open loop) f = 1 kHz
v
Voltagegain (closed loop)
v
Input noise voltage (0) 1 5 µ
N
Input noise current (0) 60 200 pA
N
Efficiency f = 1 Hz
SVR Supply voltage rejection
(0) Filter with noise bandwidth:22 Hz to 22 kHz
f = 1 kHz
= 0.05 to4.5W RL=4
P
o
P
= 0.05 to 7.5W RL=2
o
0.15
0.15
80
f = 10 kHz f = 1 kHz
R
=4
L
P
=6W
o
= 10W
P
o
R R
L L
=4 =2
39.3 40 40.3 dB
Ω Ω
60
69 65
f = 100 Hz V
= 0.5V
ripple
R
=10k RL=4 30 36 dB
g
% %
k dB
dB
% %
V
Figure 1. Quiescent output voltagevs. supply voltage
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Figure 2. Quiescent dra in currentvs. supplyvoltage
Figure 3. Output power vs. supply voltage
TDA2003
Figure 4. Output power vs. load resistanceR
L
Figure 7. Dist ortion vs. output power
Figure 5. Gain vs. inp ut sensivity
Figure 8. Distortion vs. frequency
Figure 6 . Gain vs . input sensivity
Figure 9. Supply voltage rejectionvs.voltage gain
Figure 10. Supply voltage rejectionvs. frequency
Figure 11. Power dissipa­tion andefficiencyvs.output power(R
=4Ω)
L
Figure 12. Power dissipa­tionand efficiencyvs.output
power(R
=2Ω)
L
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TDA2003
Figure 13. Maximum power dissipation vs. supply voltage (sine wave operation)
APPLICATION INFORMATION
Figu re 16 . Typica l a ppl i cation circuit
Figure14. Maximumallowable power dissipation vs. ambient temperature
Figure 15. Typical values of capacitor (C
) for differe n t
X
values of frequency reponse (B)
Figure 17. P.C. board and component layout for the circuit of fig.16 (1 : 1 scale)
BUILT-IN PROTECTIONSYSTEMS Load dumpvoltage surge
The TDA 2003 has a circuit which enables it to withstanda voltagepulse train,on pin5,of thetype shownin fig. 19.
If the supply voltagepeaks 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 shownin fig.18.
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A suggested LC network is shown in fig. 19. With this network,a trainof pulseswith amplitudeup to 120V and width of 2 ms can be applied at point A. This type of protection is ON when the supply voltage(pulsedor DC)exceeds18V.Forthisreason the maximumoperating supply voltage is 18V.
Figure 18. Figure 19.
TDA2003
Short-circuit(AC and DC conditions)
The TDA 2003 can withstand a permanent short­circuiton theoutput for a supplyvoltageup to 16V.
Polarityinversion
High current (up to 5A) can be handled by the devicewithno damagefor a longerperiod thanthe blow-out time of a quick 1A fuse (normally con­nectedin series with the supply).
This featureis added to avoiddestructionif,during fittingto thecar,a mistakeon the connectionof the supplyis made.
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 TDA 2003 pro­tectiondiodes are included to avoidany damage.
Inductive load
A protectiondiodeis providedbetweenpin 4 and 5 (see the internal schematicdiagram) to allow use of the TDA2003 with inductiveloads.
Figure 20. Output power and drain curren t vs. case temperature(R
=4Ω)
L
In particular, the TDA 2003 can drive a coupling transformerfor audio modulation.
DC voltage
The maximum operating DC voltage on the TDA 2003is 18V.
Howeverthe devicecan withstanda DCvoltageup to 28V with no damage. This could occur during winter if two batteries were series connected to crankthe engine.
Thermalshut-down
Thepresenceof a thermal limitingcircuit offers the following advantages:
1) an overload on the output (even if it is perma­nent),oranexcessiveambienttemperaturecan be easily withstood.
2) the heat-sink can have a smaller factor com­paredwith thatof a conventionalcircuit. There is no device damage in the case of ex­cessive junction temperature: all that happens isthatP
(andthereforeP
o
)andIdarereduced.
tot
Figure 21. Output power and drain current vs. case temperature(RL=2Ω)
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TDA2003
PRATICALCONSIDERATION Printedcircuitboard
The layout shown in fig. 17 is recommended. If different layouts are used, the ground points of input 1 and input 2 must be well decoupled from thegroundoftheoutputthroughwhicha ratherhigh currentflows.
Assemblysuggestion
Noelectrical insulationisrequire dbetweenthe
packageand theheat-sink.Pinlengthshouldbeas short as possible.The soldering temperature must
not exceed260°C for 12 seconds.
Applicationsuggestions
The recommended component values are those shownin the applicationcircuitsof fig.16. Differentvaluescan be used.The followingtableis intended to aid thecar-radio designer.
Component
C1
C2 C3 C4 1000µF Output coupling to load Higher low frequency
C5
C
X
R1 R2
R3
R
X
Recommmended
value
2.2 µF
470µF
0.1µF
0.1 µF
1
2πBR1
-1) R2
(G
v
2.2
1
Frequency stability Danger of oscillation at
20 R2
Purpose
Input DC decoupling
Ripple rejection Degradation of SVR Supply bypassing Danger of oscillation
Frequency stability Danger of oscillation at
Upper frequency cutoff Lower bandwidth Larger bandwidth
Setting of gain Increase of drain current Setting of gain
and SVR
Upper frequency cutoff Poor high frequency
Larger than
recommended value
Degradation of SVR
high frequencies with inductive loads
attenuation
Smaller than
recommended valueC1
Noise at switch-on, switch-off
cutoff
high frequencieswith inductive loads
Danger of oscillation
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TDA2003
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
mm inch
A 4.8 0.189 C 1.37 0.054 D 2.4 2.8 0.094 0.110
D1 1.2 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 0.8 1.05 0.031 0.041
F1 1 1.4 0.039 0.055
G 3.2 3.4 3.6 0.126 0.134 0.142 G1 6.6 6.8 7 0.260 0.268 0.276 H2 10.4 0.409 H3 10.05 10.4 0.396 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 2.6 3 0.102 0.118 L6 15.1 15.8 0.594
0.622 L7 6 6.6 0.236 0.260 L9 0.2 0.008
M 4.23 4.5 4.75 0.167 0.177 0.187
M1 3.75 4 4.25 0.148 0.157 0.167
V4 40° (typ.)
OUTLINE AND
MECHANICAL DATA
Pentawatt V
A
H3
B
H1
L
L1 L8
VV
C
L5
Dia.
L7
L6
D1
V1
R
D
L2 L3
RESIN BETWEEN
V3
R
R
V4
F1
LEADS
H2
E
M1
M
V4
GG1
F
L9
VV
H2
F
E1
E
V4
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TDA2003
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