Datasheet TDA2003 Datasheet (Contek)

TDA2003 LINEAR INTEGRATED CIRCUIT

10W CAR RADIO AUDIO AMPLIFIER

DESCRIPTION

TheContek TDA2003 is a monolithic audio power amplifier

integrated circuit.

FEATURES

*Very low external component required.
*High current output ( up to 3 A).
*Low harmonic and crossover distortion.
*Built-in Over temperature protection.
*Short circuit protection between all pins.

PIN CONFIGURATIONS

1 Non inverting input
2 Inverting input
3 Ground
4 Output
5 Supply Voltage

BLOCK DIAGRAM

1

TO-220B

5

4

Contek

CONTEK

12

Contek Microelectronics Co.,Ltd.

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1

TDA2003 LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUM RATINGS(Ta=25 C)

PARAMETER SYMBOL VALUE UNIT

Peak Supply Voltage Vs 40 V
DC Supply Voltage Vs 28 V
Operating Supply Voltage Vs 18 V
Output Peak Current (repetitive) Io 3.5 A
Output Peak Current ( non repetitive) Io 4.5 A
Power Dissipation at Tcase = 90 C Ptot 20 W
Storage Temperature Tstg -40~+150 C
Junction Temperature Tj -40~+150 C

ELECTRICAL CHARACTERISTICS(Refer to the test circuit,Vs=+-16V,Ta=25 C)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

DC CHARACTERISTICS

Supply Voltage Vs 8 18 V
Quiescent Output
Voltage
Quiescent Drain
Current

AC CHARACTERISTICS

Output Power Po RL=2W 910 W

Input Sensitivity Vi Po=6W,RL=4W 55 mV

Input Saturation
Voltage
Frequency
Response(-3dB)

Distortion D Po=0.05 to 4.5W ,RL=4W 0.15 %

Input
Resistance(Pin 1)
Input Noise Current e
Input Noise Voltage I
Open Loop Gvo f=1kHz 80 dB
Voltage Gain f=10kHz 60 dB
Closed Loop Gvc f=1kHz
Voltage Gain RL=4W 39.3 40 40.3 dB

Vo 6.1 6.9 7.7 V

Id 44 50 mA

d=10%,f=1kHz

RL=8W 5.5 6

RL=3.2 W 7.5
RL=1.6W 12
f=1kHz

Po=0.5W,RL=4 W 14 mV

Po=0.5W,RL=2 W 10 mV
Po=10W,RL=2 W 50 mV

Vi(rms) 300 mV

B Po=1W,RL=4W 40 15000 Hz

f=1kHz

Po=0.05 to 7.5W ,RL=2W 0.15

Ri open loop,f=1kHz 70 150 kW

N

N

60 200 pA

15 mV

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TDA2003 LINEAR INTEGRATED CIRCUIT

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

f=1kHz

Efficiency Po=6W,RL=4 W 69 %

Po=10W,RL=2 W 65 %
Supply Voltage
Rejection

TEST CIRCUIT

SVR f=100Hz,Vripple=0.5V

Rg=10kW,RL=4W 30 36 dB

+Vs

F

m

Vi

C1

1mF

1

100

Contek
TDA2003

2

Rx

39 W

Cx

39nF

Rx=20*R2 Cx=1/(2 p B*R1)

C2

470 m F

DC Test Circuit

5

3

C3

100nF

4

C4

1000mF

R1

220 W

R3

1 W

R2

2.2 W

100nF

AC Test Circuit

RL

+Vs

+Vs

mA

Vi

1

5

Contek
TDA2003

2

3

470 mF

1000 mF

4

V

100nF

R1

220W

R2

2.2

Vi

C1

1 mF

100 mF

1

Contek
TDA2003

2

RL

W

Rx

39W

Cx

39nF

C2

470mF

C3

100nF

5

3

C4

1000mF

4

R1

220

W

R2

2.2W

R3
1W

RL

100nF

CONTEK

Rx=20*R2 Cx=1/(2pB*R1)

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TDA2003 LINEAR INTEGRATED CIRCUIT

TYPICAL PERFORMANCE CHARACTERISTICS

Fig.1Quiescentoutputvoltage

vs.Supplyvoltage

Vo(V)

8

6

4

2

0

810 12 14 16

Fig.4outputpowervs.load

resistance

Po

(W)

16

Vs=16V

Vs=14.4V

12

Vs=12V

8

Vs=8V

4

0

02 4 6 8

100

d(%)

Gv=40dB
f=1kHz

10

Vs=14.4V

1

0.1

0.01

Gv=40dB
f=1kHz
d=10%

Fig.7Distortionvs.

outputpower

R=3.2W

R=4W

Vs(V)

RL(W)

R=2

W

R=1.6W

100.1 1 100

Po(W)

Fig.2Quiescentdraincurrent

vs.Supplyvoltage

Id(mA)

80

60

40

20

0

810 12 14 16

Fig.5Gainvs. Inputsensitivity Fig.6Gainvs.Inputsensitivity

58

54

52

48

44

40

36

32

28

24

20

10 100 1000

d(%)

0.8

0.6

0.4

0.2

0

1

10

Fig.8Distortionvs.

frequency

Gv=40dB
Vs=14.4V
RL=2W/4W

Po=2.5W

2

10

Frequency (Hz)

Gv=40dB
f=1kHz
RL=4W

3

10

Fig.3Outputpowervs.Supply

Po

(W)

20

15

10

5

0

Vs(V)

Vi(rms) Vi(rms)

Po=50mW

4

10

0 5 10 15 20

58

54

52

48

44

40

36

32

28

24

20

10

SVR
(dB)

-10

-20

-30

-40

-50
30 35 40 45 50 55

voltage

Gv=40dB
f=1kHz
d=10%

Gv=40dB
f=1kHz
RL=2W

100 1000

Fig.9Supplyvoltagerejection

vs.voltagegain

fripple=100Hz
Vs=14,4V
RL=2.2W
Rg=10kW

Gv(dB)

R=1.6W

R=2W

R=3.2W

R=4

Vs(V)

W

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4

TDA2003 LINEAR INTEGRATED CIRCUIT

Fig. 10 Supply voltage

rejection vs.frequency

SVR
(dB)

0

-20

-40

-60

-80

10 10

Ptot

(W)

20

15

10

5

0

Vs=14.4V
Vripple=0.5V
Gv=40dB
f=1kHz
Rg=10kW

2

Fig. 13 Maximum Power

dissipation and supply

voltage(sine wave operation)

0 5 10 15 20

3

10

R2=22W

W

R2=1

10410

frequency(Hz)

RL=1.6W

RL=2W

RL=3.2W

RL=4W

Vs(V)

Fig. 11 Power dissipation

and efficiency vs. output

Ptot
(W)

5

Ptot
(W)

power(Rl=4W )

Ptot

temperature

h

Vs=14.4V
Gv=40dB
f=1kHz

Tam b(XC)

8

6

4

2

0

02468

Fig. 14 Maximum allowable

dissipation and ambient

infiniteheatsink

20

15

10

10XC/W

5

30XC/W

0

0 50 100 150 200

Po(W)

h

(%)

80

60

40

20

0

Fig. 12 Power dissipation

and efficiency vs. output

Ptot
(W)

Vs=14.4V

8

Gv=40dB
f=1kHz

6

4

2

0

0

2468

Fig. 15 Typical values of

capacitor(Cx) for different

values of frequency

100

Cx

(nF)

10

R2=2.2W

1

36 40 44 48

power(Rl=2W )

(%)

80

60

40

20

0

Po(W)

response

B=10kHz

B=15kHz

B=20kHz

Gv(dB)

APPLICATION CIRCUIT

Vi

C1

1 m F

Rx=20*R2 Cx=1/(2 p B*R1)

Fig 16 Typical Application Circuit

1

2

Rx

39 W

Cx

39nF

Contek Microelectronics Co.,Ltd.

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F

m

100

Contek
TDA2003

470 m F

C2

+Vs

C3

100nF

5

4

3

R1

220 W

C4

1000 m F

R3

1 W

RL

R2

2.2 W

100nF

5

TDA2003 LINEAR INTEGRATED CIRCUIT

Vs=14.4V

0.1mF

W

2.2mF

1

2

The Values of the capacitors C3 and C4 are different to optimize the SVR(Typ. 40dB)

5

Contek
TDA2003

4

3

0.1 mF

C3

15mF

Fig.18 20W Bridge Configuration Application

1

RL=4W

200W 430W

W

16

W

16

4

C4

10mF

5

Contek

TDA2003

3

1

2

2.2mF

Vs=14.4V

0.1mF

CONTEK

0.1 mF

1

2

Fig.20 Low Cost Bridge Configuration Application Circuit(Po=18W)

5

Contek
TDA2003

3

C3

15 mF

W

RL=4

4

F

m

0.1

1nF

4

0.1 mF

620W

5

TDA2003

3

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0.1mF

1

Contek

2

6

TDA2003 LINEAR INTEGRATED CIRCUIT

BUILT-IN PROTECTION SYSTEMS

LOAD DUMP VOLTAGE SURGE

The Contek TDA2003 has a circuit which enables it to withstand a volt. CHARACT age pulse train, on pin 5, of the type

shown in Fig. 23.

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 head within the limits shown in Fig.22.

A suggested LC network is shown in Fig.23.With this network, a train of pulses with amplitude up to 120V and width of

2ms 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.

Vs

t1=50ms

(V)

40

AB

2mH

From

Supply

Voltage

3000mF

16V

To

Pin 5

14.4

t

t2=1000ms

SHORT CIRCUIT (AC and DC Conditions)

The Contek TDA2003 can withstand a permanent short-circuit on the output for a supply voltage up to 16V.

POLARITY INVERSION

High current(up to 5A) can be handled by the device with no damage for a longer period than the blow-out time of a
quick 1A fuse(normally connected in series with the supply).
The feature is added to avoid destruction if, during fitting to the car, a mistake on 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 Contek TDA2003 protection diodes are included to avoid any damage.

INDUCTIVE LOAD

A protection diode is provide between pin 4 and pin 5(see the internal schematic diagram) to allow use of the Contek
TDA2003 with inductive loads. In particular, the Contek TDA2003 can drive a coupling transformer for audio modulation.

DC VOLTAGE

The maximum operating DC voltage on the Contek TDA2003 is 18V.
However the device 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.

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7

TDA2003 LINEAR INTEGRATED CIRCUIT

THERMAL SHUT-DOWN

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 heat-sink can have a smaller factor compared with that of a conventional circuit. There is no device damage in
case of excessive junction temperature: all that happens is that Po ( and there Ptot) and Id are reduced.

APPLICATION SUGGESTION

The recommended values of the components are those shown on application circuit of Fig.16. Different values can be
used. The following table can help the designer.

COMPONENT RECOMMENDED

VALUE

R1 (Gv-1)*R2 gain setting. increase of Gain
R2 2.2p gain and SVR

R3 1W Frequency stability Danger of oscillation

Rx 20R2 Upper frequency

C1 2.2mF Input DC decoupling Noise at switch-on

C2 470mF Ripple rejection Decrease of SVR
C3 0.1mF Supply voltage

C4 100mF Supply voltage

C5 0.1mF Frequency stability Danger of oscillation

Cx 1/(2p*B*R1) Upper frequency

PURPOSE LARGE THAN

RECOMMENDED

VALUE

Decrease of SVR

setting.

at high frequencies

with inductive loads.

cutoff

bypass

bypass

cutoff

Poor high frequencies

attenuation

smaller bandwidth Larger bandwidth

LARGE THAN

RECOMMENDED

Dange of oscillation

Dange of oscillation

Higher low frequency

at high frequencies

with inductive loads.

VALUE

switch-off

cutoff

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