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User Manual: Datasheets TDA2004-H14, TDA2004-J11, TDA2004A, TDA2004L-H14, TDA2004L-J11.

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TDA2004A

March 1995

10 + 10W STEREO AMPLIFIER FOR CAR RADIO

MULTIWATT11

ORDERING NUMBER : TDA2004A

PIN CONNECTION (top view)

Its main features are :

Low distortion.

Low noise.

High reliability of the chip and of the package with

additional safety during operation thanksto protec-

tions against :

.OUTPUT AC SHORT CIRCUIT TO GROUND

.VERY INDUCTIVE LOADS

.OVERRATING CHIP TEMPERATURE

.LOAD DUMP VOLTAGE SURGE

.FORTUITOUS OPEN GROUND

Space and cost saving :very low numberof exter-

nal components,very simple mounting system with

no electrical isolation between the packageand the

heatsink.

DESCRIPTION

The TDA2004A is a class B dual audio power am-

plifier in MULTIWATTpackage specifically desi-

gnedforcar radioapplications; stereoamplifiersare

easily designed using this device that provides a

high current capability (up to 3.5A) and that can dri-

ve very low impedance loads (down to 1.6Ω).

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THERMAL DATA

Symbol Parameter Value Unit

Rth j-case Thermal Resistance Junction-case Max. 3 °C/W

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

VSOpearting Supply Voltage 18 V

VSDC Supply Voltage 28 V

VSPeak Supply Voltage (for 50ms) 40 V

IO(*) Output Peak Current (non repetitive t = 0.1ms) 4.5 A

IO(*) Output Peak Current (repetitive f ≥10Hz) 3.5 A

Ptot Power Dissipation at Tcase =60°C30W

T

j

,T

stg Storage and Junction Temperature –40 to 150 °C

ELECTRICAL CHARACTERISTICS (Refer to the test circuit, Tamb =25°C, GV= 50dB,

Rth (heatsink) =4°C/W, unless otherwise specified)

Symbol Parameter Test Condition Min. Typ. Max. Unit

VSSupply Voltage 8 18 V

VOQuiescent Output Voltage VS = 14.4V

VS= 13.2V 6.6

6.0 7.2

6.6 7.8

7.2 V

V

IdTotal Quiescent Drain Current VS= 14.4V

VS= 13.2V 65

62 120

120 mA

mA

ISB Stand-by Current Pin 3 grounded 5 mA

POOutput Power (each channel) f = 1KHz, d = 10%

VS= 14.4V

RL=4Ω

R

L=3.2Ω

R

L=2Ω

R

L

= 1.6Ω

6

7

9

10

6.5

8

10(*)

11

W

W

W

W

VS= 13.2V

RL=3.2Ω

R

L

= 1.6Ω6

96.5

10 w

w

VS= 16V; RL=2Ω12 w

d Distortion (each channel) f = 1KHz

VS= 14.4V; RL=4Ω

P

O= 50mW to 4W

VS= 14.4V; RL=2Ω

P

O= 50mW to 6W

VS= 13.2V; RL= 3.2Ω

PO= 50mW to 3W

VS= 13.2V; RL= 1.6Ω

PO= 50mW to 6W

0.2

0.3

0.2

0.3

1

1

1

1

%

%

%

%

CT Cross Talk VS= 14.4V

VO= 4Vrms RL=4Ω

f = 1KHz

f = 10KHz Rg=5KΩ50

40 60

45 dB

dB

ViInput Saturation Voltage 300 mV

(*) The max. output current is internally limited.

TDA2004A

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Notes : (*) 9.3W without Bootstrap

(**) Bandwith Filter : 22Hz to 22KHz.

ELECTRICAL CHARACTERISTICS (continued

Symbol Parameter Test Condition Min. Typ. Max. Unit

RiInput Resistance (non inverting input) f = 1KHz 70 200 KΩ

fLLow Frequency Roll off (-3dB) RL=4Ω

R

L=2Ω

R

L= 3.2Ω

RL= 1.6Ω

35

50

40

55

Hz

Hz

Hz

Hz

fHHigh Frequency Roll off (-3dB) RL= 1.6Ωto 4Ω15 KHz

GVVoltage gain (open loop) f = 1KHz 90 dB

Voltage gain (closed loop) f = 1KHz 48 50 51 dB

closed loop gain matching 0.5 dB

eNTotal Input noise Voltage Rg= 10KΩ(**) 1.5 5 µV

SVR Supply Voltage Rejection fripple = 100Hz; Rg= 10KΩ

C3 = 10µFV

ripple = 0.5Vrms 35 45 dB

ηEfficiency VS= 14.4V f = 1KHz

RL=4ΩP

O= 6.5W

RL=2ΩP

O= 10W

VS= 13.2V f = 1KHZ

RL=3.2ΩP

O= 6.5W

RL= 1.6ΩPO= 10W

70

60

70

60

%

%

%

%

TJThermal Shutdown Junction

Temperature 145 °C

Figure 1 : Test and Application Circuit.

TDA2004A

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Figure 2 : P.C. Board and Component layout of the fig. 1 (scale 1 : 1).

Figure 4 : Quiescent Drain Current vs.

Supply Voltage.

Figure 3 : Quiescent OutputVoltage vs.

Supply Voltage.

TDA2004A

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Figure 7 : Output Power vs. Supply Voltage. Figure 8 : Distortion vs. Frequency.

Figure 6 : Output Power vs. Supply Voltage.Figure 5 : Distortion vs. Output Power.

Figure 9 : Distortion vs. Frequency. Figure 10 : Supply Voltage Rejection vs. C3.

TDA2004A

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Figure 11 : Supply Voltage Rejection vs.

Frequency. Figure 12 : Supply Voltage Rejection vs.

Values of Capacitors C2and C3.

Figure 15 : Maximum Allowable Power

Dissipation vs. Ambient Temperature. Figure 16 : Total Power Dissipation and

Efficiency vs. Output Power.

Figure 13 : Supply Voltage Rejection vs.

Values of Capacitors C2and C3.Figure 14 : Gain vs. Input Sensitivity.

TDA2004A

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Figure 17 : Total Power Dissipation and

Efficiency vs. Output Power .

APPLICATION SUGGESTION

The recommended values of the componentsare those shown on application circuit of fig.1. Different values

can be used ; the following table can help the designer.

Component Recomm. Value Purpose Larger Than Smaller Than

R1 120KΩOptimization of the

output signal simmetry Smaller POmax. Smaller POmax.

R2, R4 1KΩClose loop gain

setting (*) Increase of gain Decrease of gain

R3, R5 3.3ΩDecrease of gain Increase of gain

R6, R7 1ΩFrequency stability Danger of oscillation

at high frequency with

inductive load

C1, C2 2.2µF Input DC decoupling High turn-on delay High turn-on pop

Higher low frequency

cutoff. Increase of

noise

C3 10µF Ripple Rejection Increase of SVR.

Increase of the switch-

on time.

Degradation of SVR.

C4, C6 100µF Boostrapping Increase of distortion

at low frequency

C5, C7 100µF Feedback Input DC

decoupling.

C8, C9 0.1µF Frequency Stability Danger of oscillation.

C10, C11 1000µF to 2200µF Output DC decoupling. Higher low-frequency

cut-off.

(*) The closed–loop gain must be higher than 26dB.

TDA2004A

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BUILT–IN PROTECTION SYSTEMS

LOAD DUMP VOLTAGE SURGE

The TDA2004A has a circuit which enables it to wi-

thstand a voltage pulse train, on pin 9, of the type

shown in Fig. 19.

If the supply voltage peaks to more than 40 V, then

an LC filter must beinsertedbetweenthe supplyand

pin 9, in order to assure that the pulses at pin 9 will

be held within the limits shown.

A suggested LC network is shown in Fig. 18. With

thisnetwork,a trainofpulsewith amplitudeup to 120

V and with of 2 ms can be applied to point A. This

type of protection is ON when the supply voltage

(pulse or DC) exceeds18 V. For this reason the ma-

ximum operating supply voltage is 18 V.

SHORT CIRCUIT (AC conditions)

The TDA2004A can withstand an accidental short-

circuit from the output to ground caused by a wrong

connection during normal working.

POLARITY INVERSION

High current (up to 10 A) can be handled by the de-

vice with no damage for a longer period than the

blow-out time of a quick 2 A fuse (normally connec-

ted in series with the supply). This featureis added

to avoid destruction, if during fitting to the car, a mi-

stakeon the connection of the supply is made.

OPEN GROUND

When the ratio is the ON condition and the ground

is accidentally opened, a standard audio amplifier

will be damaged. On the TDA2004A protection dio-

des are included to avoidany damage.

INDUCTIVE LOAD

A protection diode is provided to allow use of the

TDA2004A with inductive loads.

DC VOLTAGE

The maximum operating DC voltage on the

TDA2004A is 18 V.

However the device can withstand a DC voltage up

to 28V withno damage.Thiscouldoccurduringwin-

ter if two batteries are series connectedto crank the

engine.

THERMAL SHUT-DOWN

The presence of a thermal limiting circuit offers the

following advantages:

1)anoverloadon theoutput(evenif it ispermanent),

or an excessive ambienttemperature can be easily

withstood.

2) the heatsink can have a smaller factor of safety

compared with that of a conventionalcircuit. There

is no device damage in the case of excessive jun-

ction temperature ; all that happens is the PO(and

therefore Ptot)andI

dare reduced.

The maximum allowable power dissipationdepends

uponthe size ofthe externalheatsink(i.e. its thermal

resistance) ; fig. 15 shown this dissipable power as

a functionof ambient temperaturefor different ther-

mal resistance.

Figure 18.

Figure 19.

TDA2004A

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MULTIWATT11 PACKAGE MECHANICAL DATA

DIM. mm inch

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

A 5 0.197

B 2.65 0.104

C 1.6 0.063

D 1 0.039

E 0.49 0.55 0.019 0.022

F 0.88 0.95 0.035 0.037

G 1.45 1.7 1.95 0.057 0.067 0.077

G1 16.75 17 17.25 0.659 0.669 0.679

H1 19.6 0.772

H2 20.2 0.795

L 21.9 22.2 22.5 0.862 0.874 0.886

L1 21.7 22.1 22.5 0.854 0.87 0.886

L2 17.4 18.1 0.685 0.713

L3 17.25 17.5 17.75 0.679 0.689 0.699

L4 10.3 10.7 10.9 0.406 0.421 0.429

L7 2.65 2.9 0.104 0.114

M 4.25 4.55 4.85 0.167 0.179 0.191

M1 4.73 5.08 5.43 0.186 0.200 0.214

S 1.9 2.6 0.075 0.102

S1 1.9 2.6 0.075 0.102

Dia1 3.65 3.85 0.144 0.152

TDA2004A

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Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for

the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its

use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifica-

tions mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information pre-

viously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or

systems without express written approval of SGS-THOMSON Microelectronics.

1995 SGS-THOMSON Microelectronics - All Rights Reserved

MULTIWATTis a Registered Trademark of SGS-THOMSON Microelectronics

SGS-THOMSON Microelectronics GROUP OF COMPANIES

Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore -

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TDA2004A

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