TDA2003V - STMicroelectronics

TDA2003

10W CAR RADIO AUDIO AMPLIFIER

DESCRIPTION

The TD A 2003 has improv ed performance with the

same pin configuration as the TD A 2002.

The additional features of TDA 2002, very low

number of external components, ease of assembly,

space and cost sav ing, 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 A C short circuit between

all pins and ground, thermal over-range, load dump

voltage surge up to 40V and fortuitous open

ground.

October 1998

Symbol Parameter Value Unit

VSPeak supply voltage (50ms) 40 V

VSDC supply voltage 28 V

VSOperating supply voltage 18 V

IOOutput peak current (repetitiv e) 3.5 A

IOOutput peak current (non repetitive) 4.5 A

Ptot Power dissipation at Tcase = 90°C 20 W

Tstg, TjStorage and junction temeperature -40 to 150 °C

A BSO L U T E MA XI MUM RAT IN G S

TEST CIRCU IT

PENTAWATT

ORDERING NUMBERS : TDA 2003H

TDA 2003V

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Symbol Parameter Value Unit

Rth-j-case Thermal resistance junction-case max 3 °C/W

THER MA L DATA

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PIN CONNECT ION (top view)

SCHE MATIC DIAGRAM

TDA2003

Symbol Parameter Test conditions Min. Typ. Max. Unit

DC CHARACTERISTICS (Refer to DC test circuit)

VsSupply voltage 8 18 V

VoQuiescent output voltage (pin 4) 6.1 6.9 7.7 V

IdQuiescent drain current (pin 5) 44 50 mA

AC CHARACTERISTICS (Ref er to A C test circuit, Gv = 40 dB)

PoOutput power d = 10%

f = 1 kHz RL = 4Ω

RL = 2Ω

RL = 3.2Ω

RL = 1.6Ω

5.5

7.5

Vi(rms) Input saturation voltage 300 mV

ViInput sensitivity f = 1 kHz

Po = 0.5W

Po = 6W

Po = 0.5W

Po 10W

RL = 4Ω

RL = 2Ω

ELEC TR ICAL CHARACTERISTICS ( Vs = 14.4V, Tamb = 25 °C unless otherwise specified)

DC T EST CIRCUIT A C TEST CIRCUIT

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Figure 1. Quiescent output

voltage vs. supply voltage Figure 2. Quiescent drain

current vs. supply voltage Figure 3. Output power vs.

supply voltage

Symbol Parameter Test conditions Min. Typ. Max. Unit

B Frequency response (-3 dB) Po = 1W

RL = 4Ω 40 to 15,000 Hz

d Distortion f = 1 kHz

Po = 0.05 to4.5W RL = 4Ω

Po = 0.05 to 7.5W RL = 2Ω 0.15

0.15 %

iInput resistance (pin 1) f = 1 kHz 70 150 kΩ

GvVoltage gain (open loop) f = 1 kHz

f = 10 kHz

60 dB

GvVoltage gain (closed loop) f = 1 kHz

RL = 4Ω 39.3 40 40.3 dB

eNInput noise voltage (0) 1 5 µV

iNInput noise current (0) 60 200 pA

ηEfficiency f = 1 Hz

Po = 6W

Po = 10W RL = 4Ω

RL = 2Ω69

65 %

SVR Supply voltage rejection f = 100 Hz

Vripple = 0.5V

Rg = 10 kΩRL = 4Ω30 36 dB

ELECTRICAL CHARACTERISTICS (continued)

(0) Filter with noise bandwidth: 22 Hz to 22 kHz

TDA2003

Figure 4. Output power vs.

load resistance RLFigure 5. Gain vs. input

sensivity Figure 6. Gain vs. input

sensivity

Figure 7. Distortion vs.

output power Figure 8. Distortion vs.

frequency Figure 9. Supply voltage

rejection vs. v o ltage gain

Figure 10. Supply voltage

rejection vs. frequenc y Figure 11. Power dissipa-

tion and efficiency vs. output

power (RL = 4Ω)

Figure 12. Power dissipa-

tion and efficiency vs. output

power (RL = 2Ω)

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Figure 13. Maximum power

dis si pation 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 Fi gure 17. P.C. board and component l ayout for the ci rcuit of

fig. 16 (1 : 1 scale)

APPLICATION IN FOR MATI ON

BUILT-IN PRO TECTION SYSTEMS

Load dump vo ltage surge

The 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 net work 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 operat ing supply voltage is 18V.

TDA2003

Short-circuit (AC and DC conditions)

The TDA 2003 can withstand a permanent shor t-

circuit on the output for a supply voltage up to 16V.

Po larity inversion

High current (up to 5A) can be handled by the

dev ice with no damage for a longer period than the

blow-out time of a quick 1A fuse (normally con-

nected in series with the supply).

This f eature is added to avoid destruction if , during

fitting to the car , a mistake on the connection of the

supply is 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 pro-

tection diodes are included to avoid any damage.

Induc tive loa d

A protection diode is pro vided between pin 4 and 5

(see the inter nal schematic diagram) to allow use

of the TDA 2003 with inductive loads .

In particular, the TDA 2003 can drive a coupling

transformer f or audio modulation.

DC vo ltage

The maximum operating DC voltage on the TDA

2003 is 18V.

Howe ver the dev ice can withstand a DC voltage up

to 28V with no damage. This could occur during

winter if two batteries were series connected to

crank the engine.

Thermal shut-down

The presence of a thermal limiting circuit off ers the

f ollow ing advantages:

1) an overload on the outp ut (even if it is perma-

nent), oran ex cessiv e ambient temperature can

be easily withstood.

2) the heat-sink can have a smaller factor com-

pared with that of a conventional circuit.

There is no device damage in the case of ex-

cessive junction temperature: all that happens

is that Po (and therefore Ptot) and Id are reduced.

Figure 20. Output power and

drain current vs. case

temperature (RL = 4Ω)

Figure 21. Output power and

drain current vs. case

temperature (RL = 2Ω)

Figure 18 . Figure 19.

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Component Recommmended

value Purpose Larger than

recommended value Smaller than

recommended value C1

C1 2.2 µFInput DC

decoupling Noise at switch-on,

switch-off

C2 470 µFRipple rejection Degradation of SVR

C3 0.1 µFSupply bypassing Danger of oscillation

C4 1000 µFOutput coupling to load Higher low frequency

cutoff

C5 0.1 µFFrequency stability Danger of oscillation at

high frequencies with

inductive loads

CX ≅ 1

2 π B R1 Upper frequency cutoff Lower bandwidth Larger bandwidth

R1 (Gv-1) • R2 Setting of gain Increase of drain current

R2 2.2 ΩSetting of gain

and SVR Degradation of SVR

R3 1 ΩFrequency stability Danger of oscillation at

high frequencies with

inductive loads

RX≅ 20 R2 Upper frequency cutoff Poor high frequency

attenuation Danger of oscillation

PRATICAL CONSIDERATION

Printe d c ircuit boa rd

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

the ground of the output through which a rather high

current flows.

Assembly suggestio n

No e lect rical i nsu lation is r equir ed be tween the

package and the heat-sink. Pin length should be as

short as possible. The soldering temperature must

not exceed 260°C for 12 seconds.

Application suggestions

The recommended component values are those

shown in the application circuits of fig. 16.

Different v alues can be used. The f ollowing table is

intended to aid the car-radio designer.

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Pentawatt V

DIM. mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

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.)

D1 L2

Dia.

F1 H2 F

GG1

E1 F

RESIN BETWEEN

LEADS

OUTLINE AND

MECHANICAL DATA

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by implic ation or otherwis e und er any patent or patent rights of STMi croelect ronics. Specification menti oned in this publication are subj ect to

change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not

authorized for use as critical components in lif e support devices or systems without express written approval of STMicroelectronics.

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