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

1/10

TDA2003

PIN CONNECTION

(top view)

SCHEMATICDIAGRAM

THERMAL DATA

Symbol Parameter Value Unit

2/10

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

=2Ω

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

Ω

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=4Ω

P

o

P

= 0.05 to 7.5W RL=2

o

Ω

0.15

0.15

80

f = 10 kHz
f = 1 kHz

R

=4Ω

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

=10kΩ RL=4Ω 30 36 dB

g

%
%

k
dB

dB

%
%

Ω

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

Ω

1

Ω 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

8/10

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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by implication or otherwise under any patent or patent rights of STMicroelectronics.Specificationmentioned in this publication are subjectto
change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

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