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DATA  SHEET

Product specification
Supersedes data of 1998 Mar 13

2002 Mar 05

INTEGRATED CIRCUITS

TDA8571J
4

×

40 W BTL quad car radio power

amplifier

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2002 Mar 05

2

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Product specification

4

×

40 W BTL quad car radio power

amplifier

TDA8571J

FEATURES

•

Requires very few external components

•

High output power

•

Low output offset voltage

•

Fixed gain

•

Diagnostic facility (distortion, short-circuit and
temperature pre-warning)

•

Good ripple rejection

•

Mode select switch (operating, mute and standby)

•

Load dump protection

•

Short-circuit safe to ground and to V

P

 and across the

load

•

Low power dissipation in any short-circuit condition

•

Thermally protected

•

Reverse polarity safe

•

Electrostatic discharge protection

•

No switch-on/switch-off plop

•

Flexible leads

•

Low thermal resistance

•

Pin compatible with the TDA8568Q, except for the gain.

GENERAL DESCRIPTION

The TDA8571J is a integrated class-B output amplifier
contained in a 23-lead Single-In-Line (SIL) plastic power
package. It contains four amplifiers in a BTL configuration,
each with a gain of 34 dB. The output power is 4

×

40 W

(EIAJ) into a 4

Ω¦

 load.

APPLICATIONS

•

Primarily developed for car radio applications.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

V

P

operating supply voltage

6

14.4

18

V

I

ORM

repetitive peak output current

-

-

7.5

A

I

q(tot)

total quiescent current

-

200

-

mA

I

stb

standby current

-

0.2

100

΅

A

I

sw

switch-on current

-

-

80

΅

A

Z

i

input impedance

25

30

-

k

Ω¦

P

o(EIAJ)

EIAJ output power

THD = maximum

-

40

-

W

SVRR

supply voltage ripple rejection

R

s

= 0

Ω¦

-

50

-

dB

α

cs

channel separation

R

s

= 10 k

Ω¦

-

50

-

dB

G

v(cl)

closed-loop voltage gain

33

34

35

dB

V

n(o)

noise output voltage

R

s

= 0

Ω¦

-

-

170

΅

V

V

OS

DC output offset voltage

MUTE

-

-

80

mV

V

OS

delta DC output offset voltage

ON

•†”

MUTE

-

-

80

mV

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8571J

DBS23P

plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm)

SOT411-1

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Product specification

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40 W BTL quad car radio power

amplifier

TDA8571J

BLOCK DIAGRAM

Fig.1  Block diagram.

handbook, full pagewidth

MGM562

OUT1

+

OUT1

-

+

-

+

-

Vref

2

IN1

IN2

4

23

16

8

1

15

10

MODE

VP1

VP2

VP3

VP4

21

18

6

3

PGND1

PGND2

PGND3

PGND4

30 k

Ω¦

OUT2

+

OUT2

-

+

-

+

-

7

5

11

30 k

Ω¦

OUT3

+

OUT3

-

+

-

+

-

Vref

17

IN3

SGND

TDA8571J

IN4

19

13

12

30 k

Ω¦

OUT4

+

OUT4

-

+

-

+

-

22

20

14

30 k

Ω¦

VDIAG

DIAGNOSTIC

9

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40 W BTL quad car radio power

amplifier

TDA8571J

PINNING

SYMBOL

PIN

DESCRIPTION

V

P1

1

supply voltage 1

OUT1+

2

output 1+

PGND1

3

power ground 1

OUT1

-

4

output 1

-

OUT2

-

5

output 2

-

PGND2

6

power ground 2

OUT2+

7

output 2+

V

P2

8

supply voltage 2

V

DIAG

9

diagnostic output

IN1

10

input 1

IN2

11

input 2

SGND

12

signal ground

IN3

13

input 3

IN4

14

input 4

MODE

15

mode select switch input

V

P3

16

supply voltage 3

OUT3+

17

output 3+

PGND3

18

power ground 3

OUT3

-

19

output 3

-

OUT4

-

20

output 4

-

PGND4

21

power ground 4

OUT4+

22

output 4+

V

P4

23

supply voltage 4

Fig.2  Pin configuration.

handbook, halfpage

TDA8571J

MGM563

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

VP1

OUT1

+

PGND1

OUT1

-

OUT2

-

PGND2

OUT2

+

VP2

VDIAG

IN1

IN2

SGND

IN3

IN4

MODE

VP3

OUT3

+

PGND3

OUT3

-

OUT4

-

PGND4

OUT4

+

VP4

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40 W BTL quad car radio power

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TDA8571J

FUNCTIONAL DESCRIPTION

The TDA8571J contains four identical amplifiers which can
be used for bridge applications. The gain of each amplifier
is fixed at 34 dB.

Mode select switch (pin MODE)

•

Standby: low supply current (<100

΅

A)

•

Mute: input signal suppressed

•

Operating: normal on condition.

Since this pin has a low input current (<80

΅

A), a low cost

supply switch can be applied.

To avoid switch-on plops, it is advised to keep the amplifier
in the mute mode during

150 ms (charging of the input

capacitors at pins IN1, IN2, IN3 and IN4. When switching
from standby to mute, the slope should be at least 18 V/s.
This can be realized by:

•

Microprocessor control

•

External timing circuit (see Fig.3).

Diagnostic output (pin V

DIAG

)

D

YNAMIC

D

ISTORTION

D

ETECTOR

(DDD)

At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin V

DIAG

goes LOW. This information can be used to drive a sound
processor or DC volume control to attenuate the input
signal and so limit the distortion. The output level of
pin V

DIAG

 is independent of the number of channels that

are clipping (see Fig.4).

S

HORT

-

CIRCUIT DIAGNOSTIC

When a short-circuit occurs at one or more outputs to
ground or to the supply voltage, the output stages are
switched off until the short-circuit is removed and the
device is switched on again, with a delay of approximately
10 ms after removal of the short-circuit. During this
short-circuit condition, pin V

DIAG

 is continuously LOW.

When a short-circuit occurs across the load of one or more
channels, the output stages are switched off during
approximately 10 ms. After that time it is checked during
approximately 50

΅

s to determine whether the short-circuit

is still present. Due to this duty cycle of 50

΅

s/10 ms the

average current consumption during this short-circuit
condition is very low.

During this short-circuit condition, pin V

DIAG

 is LOW for

10 ms and HIGH for 50

΅

s (see Fig.5). The protection

circuits of all channels are coupled. This means that if a
short-circuit condition occurs in one of the channels, all
channels are switched off. Consequently, the power
dissipation in any short-circuit condition is very low.

T

EMPERATURE PRE

-

WARNING

When the virtual junction temperature T

vj

reaches 145

°

C,

pin V

DIAG

 goes LOW.

O

PEN

-

COLLECTOR OUTPUTS

The diagnostic pin has an open-collector output, so more
devices can be tied together. An external pull-up resistor is
needed.

Fig.3  Mode select switch circuitry.

handbook, halfpage

+

VP

MODE

MGD959

BZX79C/3.9V

10 k

Ω¦

47 

΅

F

Fig.4  Distortion detector waveform.

handbook, halfpage

V9

0

VP

Vo

0

t

MGG155

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Product specification

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40 W BTL quad car radio power

amplifier

TDA8571J

Fig.5  Short-circuit waveform.

handbook, full pagewidth

MGG156

short-circuit over the load

10 ms

50 

΅

s

t

t

VP

short

circuit

current

V9

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Product specification

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40 W BTL quad car radio power

amplifier

TDA8571J

LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).

THERMAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

V

P

supply voltage

operating

-

18

V

non-operating

-

30

V

load dump protection;
during 50 ms; t

r

2.5 ms

-

45

V

V

sc(safe)

short-circuit safe voltage

-

18

V

V

rp

reverse polarity voltage

-

6

V

I

OSM

non-repetitive peak output current

-

10

A

I

ORM

repetitive peak output current

-

7.5

A

P

tot

total power dissipation

-

60

W

T

stg

storage temperature

-

55

+150

°

C

T

amb

ambient temperature

-

40

+85

°

C

T

vj

virtual junction temperature

-

150

°

C

SYMBOL

PARAMETER

VALUE

UNIT

R

th j-a

thermal resistance from junction to ambient in free air

40

K/W

R

th j-c

thermal resistance from junction to case (see Fig.6)

1

K/W

handbook, halfpage

3.2 K/W

0.2 K/W

3.2 K/W

3.2 K/W

3.2 K/W

virtual junction

OUT1

OUT2

OUT3

OUT4

case

MGG157

Fig.6  Equivalent thermal resistance network.

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Product specification

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40 W BTL quad car radio power

amplifier

TDA8571J

QUALITY SPECIFICATION

In accordance with

†œGeneral Quality Specification For Integrated Circuits (SNW-FQ-611D)†.

DC CHARACTERISTICS
V

P

= 14.4 V; T

amb

= 25

°

C; measured in Fig.7; unless otherwise specified.

Notes

1. The circuit is DC adjusted at V

P

= 6 to 18 V and AC operating at V

P

= 8.5 to 18 V.

2. At 18 V < V

P

< 30 V the DC output voltage

1

•„

2

V

P

.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply

V

P

supply voltage

note 1

6

14.4

18

V

I

q(tot)

quiescent current

R

L

=

•ˆž

-

200

360

mA

Operating condition

V

MODE

mode select switch level

8.5

-

V

p

V

I

MODE

mode select switch current

V

MODE

= 14.4 V

-

30

80

΅

A

V

O

output voltage

note 2

-

7.0

-

V

Mute condition

V

MODE

mode select switch level

3.3

-

6.4

V

V

O

output voltage

note 2

-

7.0

-

V

V

OS

DC output offset voltage

MUTE

-

-

80

mV

V

OS

delta DC output offset voltage

ON

•†”

MUTE

-

-

80

mV

Standby condition

V

MODE

mode select switch level

0

-

2

V

I

stb

standby current

-

0.2

100

΅

A

Diagnostic

V

DIAG

diagnostic output voltage

during any fault condition

-

-

0.6

V

T

vj

temperature pre-warning

V

DIAG

= 0.6 V

-

145

-

°

C

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Product specification

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40 W BTL quad car radio power

amplifier

TDA8571J

AC CHARACTERISTICS
V

P

= 14.4 V; R

L

= 4

Ω¦

; f = 1 kHz; T

amb

= 25

°

C; measured in Fig.7; unless otherwise specified.

Notes

1. Dynamic Distortion Detector (DDD) active, pin V

DIAG

 is set to LOW level.

2. Frequency response externally fixed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

P

o

output power

THD = 0.5%

16

19

-

W

THD = 10%

21

26

-

W

V

P

= 13.7 V; THD = 0.5%

-

17.5

-

W

V

P

= 13.7 V; THD = 10%

-

23

-

W

P

o(EIAJ)

EIAJ output power

THD = maximum; V

i

= 2 V (p-p)

square wave

35

40

-

W

P

o(max)

maximum output power

THD = maximum; V

P

= 15.2 V;

V

i

= 2 V (p-p) square wave

40

45

-

W

THD

total harmonic distortion

P

o

= 1 W

-

0.1

-

%

V

MODE

=

0.6 V; note 1

-

10

-

%

B

p

power bandwidth

THD = 0.5%; P

o

=

-

1 dB with

respect to 16 W

-

20 to
20000

-

Hz

f

ro(l)

low frequency roll-off

at

-

1 dB; note 2

-

25

-

Hz

f

ro(h)

high frequency roll-off

at

-

1 dB

20

-

-

kHz

G

v(cl)

closed-loop voltage gain

33

34

35

dB

SVRR

supply voltage ripple rejection R

s

= 0

Ω¦

; maximum ripple

V

ripple

= 2 V (p-p)

on

40

-

-

dB

mute

50

-

-

dB

standby

80

-

-

dB

Z

i

input impedance

25

30

38

k

Ω¦

V

n(o)

noise output voltage

B = 20 Hz to 20 kHz

on; R

s

= 0

Ω¦

-

125

170

΅

V

on; R

s

= 10 k

Ω¦

-

150

-

΅

V

mute; independent of R

s

-

100

-

΅

V

α

cs

channel separation

P

o

= 16 W; R

s

= 10 k

Ω¦

45

-

-

dB

G

v

channel unbalance

-

-

1

dB

V

o

output signal in mute

maximum input voltage
V

i

= 1 V (RMS)

-

-

2

mV

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Product specification

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40 W BTL quad car radio power

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TDA8571J

TEST AND APPLICATION INFORMATION

Fig.7  Application circuit diagram.

Special care must be taken in the PCB-layout to separate pin V

DIAG

from the pins IN1, IN2, IN3 and IN4 to minimize the crosstalk between the clip output

and the inputs.

To avoid switch-on plops, it is advised to keep the amplifier in the mute mode during a period of

150 ms (charging the input capacitors at pins IN1,

IN2, IN3 and IN4).

handbook, full pagewidth

MGM564

OUT1

+

RL = 4 

Ω¦

OUT1

-

+

-

+

-

Vref

2

IN1

input 1

IN2

input 2

4

15

10

MODE

2200 

΅

F

100 nF

23

+

14.4 V

16

8

1

VP1

VP2

VP3

VP4

VP

30 k

Ω¦

OUT2

+

RL = 4 

Ω¦

OUT2

-

+

-

+

-

7

5

11

30 k

Ω¦

21

18

6

3

PGND1

PGND2

PGND3

PGND4

power ground (substrate)

OUT3

+

RL = 4 

Ω¦

OUT3

-

+

-

+

-

Vref

17

IN3

SGND

TDA8571J

input 3

IN4

input 4

19

13

12

30 k

Ω¦

OUT4

+

RL = 4 

Ω¦

OUT4

-

+

-

+

-

22

20

14

30 k

Ω¦

10 k

Ω¦

VDIAG

+

VP

DIAGNOSTIC

diagnostic

output

9

470 nF

470 nF

470 nF

470 nF

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2002 Mar 05

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Product specification

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40 W BTL quad car radio power

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TDA8571J

Test information

Figures 8 to 13 have the following conditions: V

P

= 14.4 V; R

L

= 4

Ω¦

; f = 1 kHz; 80 kHz filter used; unless otherwise

specified.

Fig.8  I

P

as a function of V

P

.

handbook, halfpage

0

300

200

100

0

4

VP (V)

IP

(mA)

20

8

12

16

MGM566

Fig.9  P

o

as a function of V

P

.

(1) EIAJ; 100 Hz.

(2) THD + N = 10%.

(3) THD + N = 0.5%.

handbook, halfpage

8

18

80

60

0

20

40

10

Po

(W)

VP (V)

12

14

16

MGM567

(3)

(1)

(2)

Fig.10  THD + N as a function of P

o

.

(1) f = 10 kHz.

(2) f = 1 kHz.

(3) f = 100 Hz.

handbook, halfpage

10

1

Po (W)

10

-

1

10

-

2

MGM568

10

-

2

10

-

1

1

10

10

2

THD 

N

(%)

(1)

(2)

(3)

Fig.11  THD + N as a function of frequency.

(1) P

o

= 1 W.

(2) P

o

= 10 W.

handbook, halfpage

10

1

f (Hz)

10

-

1

10

-

2

MGM569

10

10

2

10

3

10

4

10

5

THD 

N

(%)

(1)

(2)

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2002 Mar 05

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Product specification

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40 W BTL quad car radio power

amplifier

TDA8571J

Fig.12  SVRR as a function of frequency.

handbook, halfpage

-

80

-

60

-

40

-

20

MGM570

10

f (Hz)

SVRR

(dB)

10

2

10

3

10

4

10

5

Fig.13 Channel separation as a function of

frequency.

(1) Between channels 1 and 2 or between channels 3 and 4.

(2) Between channels 1 or 2 and channels 3 or 4.

handbook, halfpage

-

90

-

70

-

50

-

30

MGM565

10

(1)

(2)

f (Hz)

α

cs

(dB)

10

2

10

3

10

4

10

5

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2002 Mar 05

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Product specification

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40 W BTL quad car radio power

amplifier

TDA8571J

PCB layout

Fig.14  PCB layout (component side).

handbook, full pagewidth

MGK079

Pgnd

2200 

΅

F

100 nF

470 nF

10 k

Ω¦

diag

in

1

2

3

4

in

mode

out 4

out 3

sgnd

470 nF

out1

out2

VP

-

+

-

+

-

+

-

+

-

78.74

111.76

Dimensions in mm.

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2002 Mar 05

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Product specification

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40 W BTL quad car radio power

amplifier

TDA8571J

Fig.15  PCB layout (soldering side).

handbook, full pagewidth

MGK080

Pgnd

2200 

΅

F

100nF

470 nF

10 k

Ω¦

diag

in

1

2

3

4

in

mode

out 4

out 3

sgnd

470 nF

out1

out2

VP

-

+

-

+

-

+

-

+

-

78.74

111.76

Dimensions in mm.

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2002 Mar 05

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Product specification

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40 W BTL quad car radio power

amplifier

TDA8571J

PACKAGE OUTLINE

UNIT A

2

 REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION

ISSUE DATE

 IEC

 JEDEC

 EIAJ

mm

4.6
4.3

A

4

1.15
0.85

A

5

1.65
1.35

DIMENSIONS (mm are the original dimensions)

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. 

 SOT411-1

96-10-11
98-02-20

0

5

10 mm

scale

D

L

L

1

L

2

E

2

E

c

A

4

A

5

A

2

m

L

3

E

1

Q

w

M

b

p

1

d

Z

e

2

e

e

1

23

j

DBS23P: plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm)

SOT411-1

v

M

D

x

h

Eh

non-concave

view B: mounting base side

B

β

e

1

b

p

c

D

(1)

E

(1)

Z

(1)

d

e

D

h

L

L

3

m

0.75
0.60

0.55
0.35

30.4
29.9

28.0
27.5

12

2.54

12.2
11.8

10.15

9.85

1.27

e

2

5.08

2.4
1.6

E

h

6

E

1

14.0
13.0

L

1

10.7

9.9

L

2

6.2
5.8

E

2

1.43
0.78

2.1
1.8

1.85
1.65

4.3

3.6
2.8

Q

j

0.25

w

0.6

v

0.03

x

45

°

β

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2002 Mar 05

16

Philips Semiconductors

Product specification

4

×

40 W BTL quad car radio power

amplifier

TDA8571J

SOLDERING

Introduction to soldering through-hole mount
packages

This text gives a brief insight to wave, dip and manual
soldering. A more in-depth account of soldering ICs can be
found in our

†œData Handbook IC26; Integrated Circuit

Packages† (document order number 9398 652 90011).

Wave soldering is the preferred method for mounting of
through-hole mount IC packages on a printed-circuit
board.

Soldering by dipping or by solder wave

The maximum permissible temperature of the solder is
260

°

C; solder at this temperature must not be in contact

with the joints for more than 5 seconds.

The total contact time of successive solder waves must not
exceed 5 seconds.

The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T

stg(max)

). If the

printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.

Manual soldering

Apply the soldering iron (24 V or less) to the lead(s) of the
package, either below the seating plane or not more than
2 mm above it. If the temperature of the soldering iron bit
is less than 300

°

C it may remain in contact for up to

10 seconds. If the bit temperature is between
300 and 400

°

C, contact may be up to 5 seconds.

Suitability of through-hole mount IC packages for dipping and wave soldering methods

Note

1. For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board.

PACKAGE

SOLDERING METHOD

DIPPING

WAVE

DBS, DIP, HDIP, SDIP, SIL

suitable

suitable

(1)

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2002 Mar 05

17

Philips Semiconductors

Product specification

4

×

40 W BTL quad car radio power

amplifier

TDA8571J

DATA SHEET STATUS

Notes

1. Please consult the most recently issued data sheet before initiating or completing a design.

2. The product status of the device(s) described in this data sheet may have changed since this data sheet was

published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.

DATA SHEET STATUS

(1)

PRODUCT

STATUS

(2)

DEFINITIONS

Objective data

Development

This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.

Preliminary data

Qualification

This data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.

Product data

Production

This data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.

DEFINITIONS

Short-form specification



 The data in a short-form

specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.

Limiting values definition



Limiting values given are in

accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
at these or at any other conditions above those given in the
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.

Application information



 Applications that are

described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
no representation or warranty that such applications will be
suitable for the specified use without further testing or
modification.

DISCLAIMERS

Life support applications



 These products are not

designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductors customers using or selling these products
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.

Right to make changes



 Philips Semiconductors

reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
the use of any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.

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2002 Mar 05

18

Philips Semiconductors

Product specification

4

×

40 W BTL quad car radio power

amplifier

TDA8571J

NOTES

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2002 Mar 05

19

Philips Semiconductors

Product specification

4

×

40 W BTL quad car radio power

amplifier

TDA8571J

NOTES

background image

© Koninklijke Philips Electronics N.V. 2002

SCA74

All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.

The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.

Philips Semiconductors - a worldwide company

Contact information

For additional information please visit http://www.semiconductors.philips.com.

Fax: +31 40 27 24825

For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.

Printed in The Netherlands

753503/02/pp

20

 Date of release:

2002 Mar 05

Document order number:

 9397 750 09411


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