Datasheet TDA8571J Datasheet (Philips)

INTEGRATED CIRCUITS

DATA SH EET

TDA8571J

4 x 40 W BTL quad car radio power
amplifier

Preliminary specification
File under Integrated Circuits, IC01

1998 Mar 13

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

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

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.

and across the

P

TDA8571J

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

• The device is primarily developed for car radio
applications.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

P

I

ORM

I

q(tot)

I

stb

I

sw

 input impedance 25 30 − kΩ

Z

i

P

o(max)

SVRR supply voltage ripple rejection R

α

cs

G

v(cl)

V

n(o)

V

 DC output offset voltage MUTE −−80 mV

OS

∆V

OS

operating supply voltage 6 14.4 18 V
repetitive peak output current −−7.5 A
total quiescent current − 200 − mA
standby current − 0.2 100 µA
switch-on current −−80 µA

maximum output power THD = maximum − 40 − W

=0Ω−50 − dB

s

channel separation Rs=10kΩ−50 − dB
closed-loop voltage gain 33 34 35 dB
noise output voltage Rs=0Ω−−170 µV

 delta DC output offset voltage ON ↔ MUTE −−80 mV

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

PACKAGE

TDA8571J DBS23P plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm) SOT411-1

1998 Mar 13 2

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

BLOCK DIAGRAM

handbook, full pagewidth

IN1

IN2

SGND

IN3

MODE

10

11

12

13

V

30 kΩ

30 kΩ

TDA8571J

30 kΩ

P1

TDA8571J

V

P2

V

+

P3

V

P4

23168115

2

OUT1+

−

+

4

OUT1−

−

V

ref

+

7

OUT2+

−

+

5

OUT2−

−

9

DIAGNOSTIC

+

V

DIAG

17

OUT3+

−

+

19

OUT3−

−

14

IN4

30 kΩ

PGND1 PGND2 PGND3 PGND4

Fig.1 Block diagram.

1998 Mar 13 3

V

ref

+

22

OUT4+

−

+

20

OUT4−

−

211863

MGM562

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

PINNING

SYMBOL PIN DESCRIPTION

V

P1

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

V

DIAG

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

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

1 supply voltage 1

8 supply voltage 2
9 diagnostic output

16 supply voltage 3

23 supply voltage 4

handbook, halfpage

V

P1

OUT1+

PGND1

OUT1−
OUT2−

PGND2

OUT2+

V

P2

V

DIAG

IN1
IN2

SGND

IN3
IN4

MODE

V

P3

OUT3+

PGND3

OUT3−
OUT4−

PGND4

OUT4+

V

P4

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

TDA8571J

TDA8571J

MGM563

1998 Mar 13 4

Fig.2 Pin configuration.

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

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 15)

• Standby: low supply current (<100 µA)

• Mute: input signal suppressed

• Operating: normal on condition.

Since this pin has a low input current (<80 µA), 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 10, 11, 13 and 14). 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).

TDA8571J

HORT-CIRCUIT DIAGNOSTIC

S
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 9 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 µs to determine whether the short-circuit
is still present.
Due to this duty cycle of 50 µs/10 ms the average current
consumption during this short-circuit condition is very low.

During this short-circuit condition, pin 9 is LOW for 10 ms
and HIGH for 50 µs (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.

Diagnostic output (pin 9)

D

YNAMIC DISTORTION DETECTOR (DDD)

At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin 9
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 9
is independent of the number of channels that are clipping
(see Fig.4).

+V

handbook, halfpage

P

10 kΩ

BZX79C/3.9V

MODE

47 µF

MGD959

T

EMPERATURE PRE-WARNING

When the virtual junction temperature Tvj reaches 145 °C,
pin 9 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.

handbook, halfpage

V

o

V

9

V

0

P

0

MGG155

t

Fig.3 Mode select switch circuitry.

1998 Mar 13 5

Fig.4 Distortion detector waveform.

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

handbook, full pagewidth

short

circuit

current

V

9

short-circuit over the load

V

P

Fig.5 Short-circuit waveform.

TDA8571J

MGG156

t

10 ms

t

50 µs

1998 Mar 13 6

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power

TDA8571J

amplifier

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

P

V

sc(safe)

V

rp

I

OSM

I

ORM

P

tot

T

stg

T

amb

T

vj

THERMAL CHARACTERISTICS

supply voltage operating − 18 V

non-operating − 30 V
load dump protection;

− 45 V

during 50 ms; tr≥ 2.5 ms
short-circuit safe voltage − 18 V
reverse polarity voltage − 6V
non-repetitive peak output current − 10 A
repetitive peak output current − 7.5 A
total power dissipation − 60 W
storage temperature −55 +150 °C
operating ambient temperature −40 +85 °C
virtual junction temperature − 150 °C

SYMBOL PARAMETER VALUE UNIT

R
R

th j-a
th j-c

thermal resistance from junction to ambient in free air 40 K/W
thermal resistance from junction to case (see Fig.6) 1 K/W

handbook, halfpage

OUT1 OUT2 OUT3 OUT4

3.2 K/W

virtual junction

3.2 K/W

0.2 K/W

case

3.2 K/W

3.2 K/W

MGG157

Fig.6 Equivalent thermal resistance network.

1998 Mar 13 7

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power

TDA8571J

amplifier

QUALITY SPECIFICATION

In accordance with

Handbook

”. The handbook can be ordered using the code 9397 750 00192.

DC CHARACTERISTICS

= 14.4 V; T

V

P

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

P

I

q(tot)

Operating condition

V

15

I

15

V

O

Mute condition

V

15

V

O

V

 DC output offset voltage MUTE −−80 mV

OS

∆V

 delta DC output offset voltage ON ↔ MUTE −−80 mV

OS

Standby condition

V

15

I

stb

Diagnostic

V

9

T

vj

“SNW-FQ-0611E”

=25°C; measured in Fig.7; unless otherwise specified.

amb

. The number of the quality specification can be found in the

“Quality Reference

supply voltage note 1 6 14.4 18 V
quiescent current RL= ∞−200 360 mA

mode select switch level 8.5 − V

p

mode select switch current V15= 14.4 V − 30 80 µA
output voltage note 2 − 7.0 − V

mode select switch level 3.3 − 6.4 V
output voltage note 2 − 7.0 − V

mode select switch level 0 − 2V
standby current − 0.2 100 µA

diagnostic output voltage during any fault condition −−0.6 V
temperature pre-warning V9= 0.6 V − 145 −°C

V

Notes

1. The circuit is DC adjusted at V

= 6 to 18 V and AC operating at VP= 8.5 to 18 V.

P

2. At 18V<VP< 30 V the DC output voltage ≤1⁄2VP.

1998 Mar 13 8

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power

TDA8571J

amplifier

AC CHARACTERISTICS

V

= 14.4 V; RL=4Ω; f = 1 kHz; T

P

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

P

o

P

o(max)

output power THD = 0.5% 16 19 − W

maximum output power THD = maximum; Vi= 2 V (p-p)

THD total harmonic distortion P

B

f

ro(l)

f

ro(h)

G

p

v(cl)

power bandwidth THD = 0.5%; Po= −1dB

low frequency roll-off at −1 dB; note 2 − 25 − Hz
high frequency roll-off at −1dB 20 −−kHz
closed-loop voltage gain 33 34 35 dB

SVRR supply voltage ripple rejection on; R

Z

 input impedance 25 30 38 kΩ

i

V

n(o)

α

cs

∆G

 channel unbalance −−1dB

v

V

o

noise output voltage on; Rs=0Ω;

channel separation Po= 16 W; Rs=10kΩ 45 −−dB

output signal in mute Vi=V

=25°C; measured in Fig.7; unless otherwise specified.

amb

THD = 10% 21 26 − W
V

= 13.7 V; THD = 0.5% − 17.5 − W

P

= 13.7 V; THD = 10% − 23 − W

V

P

34 40 − W

square wave

=1W − 0.1 − %

o

V

= 0.6 V; note 1 − 10 − %

9

− 20 to

with respect to 16 W

=0Ω;

s

V

ripple=Vripple(max)

mute; R
V

ripple=Vripple(max)

standby; R
V

ripple=Vripple(max)

=0Ω;

s

s

=0Ω;

= 2 V (p-p)

= 2 V (p-p)

= 2 V (p-p)

40 −−dB

50 −−dB

80 −−dB

− 125 170 µV

B=20Hzto20kHz
on; R

=10kΩ;

s

− 150 −µV

B=20Hzto20kHz
mute; B = 20 Hz to 20 kHz;

independent of R

i(max)

s

= 1 V (RMS) −−2mV

− 100 −µV

− Hz

20000

Notes

1. Dynamic Distortion Detector (DDD) active, pin 9 is set to logic 0.

2. Frequency response externally fixed.

1998 Mar 13 9

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

TEST AND APPLICATION INFORMATION

handbook, full pagewidth

MODE

V

P1

15

10

470 nF

470 nF

470 nF

IN1

IN2

SGND

IN3

30 kΩ

11

30 kΩ

12

TDA8571J

13

30 kΩ

input 1

input 2

input 3

TDA8571J

V

P

V

+

P2

V

1681

P3

V

P4

23

2

OUT1+

−

+

4

OUT1−

−

V

ref

+

7

OUT2+

−

+

−

DIAGNOSTIC

+

OUT2−

5

10 kΩ

V

9

DIAG

17

OUT3+

−

+

OUT3−

19

−

RL = 4 Ω

RL = 4 Ω

RL = 4 Ω

+14.4 V

2200 µF100 nF

+V

P

diagnostic

output

V

ref

22

OUT4+

RL = 4 Ω

OUT4−

20

input 4

470 nF

IN4

14

+

−

30 kΩ

+

−

211863

PGND1 PGND2 PGND3 PGND4

power ground (substrate)

Special care must be taken in the PCB-layout to separate pin 9 from the pins 10, 11 13 and 14 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
10, 11, 13 and 14).

MGM564

Fig.7 Application circuit diagram.

1998 Mar 13 10

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power

TDA8571J

amplifier

Test information

Figures 8 to 13 have the following conditions: VP= 14.4 V; RL=4Ω; f = 1 kHz; 80 kHz filter used; unless otherwise
specified.

300

handbook, halfpage

I

P

(mA)

200

100

0

0

MGM566

4

VP (V)

2081216

80

handbook, halfpage

P

o

(W)

60

40

20

0

818

(1)

(2)

(3)

10

12 14 16

MGM567

VP (V)

10

handbook, halfpage

THD + N

(%)

1

−1

10

−2

10

−2

10

(1) f = 10 kHz.
(2) f = 1 kHz.
(3) f = 100 Hz.

Fig.8 IPas a function of VP.

(1)

(2)

(3)

−1

10

11010

MGM568

Po (W)

2

(1) EIAJ; 100 Hz.
(2) THD + N = 10%.
(3) THD + N = 0.5%.

10

handbook, halfpage

THD + N

(%)

1

−1

10

−2

10

10 10

(1) Po=1W.
(2) Po=10W.

Fig.9 Poas a function of VP.

(1)

(2)

2

3

10

4

10

MGM569

f (Hz)

5

10

Fig.10 THD + N as a function of Po.

1998 Mar 13 11

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

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

−20

handbook, halfpage

SVRR

(dB)

−40

−60

−80

10

2

10

3

10

MGM570

4

10

f (Hz)

5

10

TDA8571J

−30

handbook, halfpage

α

cs

(dB)

−50

−70

−90

10

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

2

10

3

10

(1)

(2)

4

10

f (Hz)

MGM565

5

10

Fig.12 SVRR as a function of frequency.

Fig.13 Channel separation as a function of

frequency.

1998 Mar 13 12

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

PCB layout

handbook, full pagewidth

78.74

TDA8571J

111.76

Pgnd

V

P

2200 µF

100 nF

−

−

out1

+

470 nF

−

out2

+

10 kΩ

Dimensions in mm.

diag in

12 34

Fig.14 PCB layout (component side).

1998 Mar 13 13

sgnd

−

out 4

+

470 nF

−

out 3

+

in mode

MGK079

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

handbook, full pagewidth

78.74

TDA8571J

111.76

−

out 4

+

470 nF

−

out 3

+

inmode

sgnd

Dimensions in mm.

Fig.15 PCB layout (soldering side).

1998 Mar 13 14

470 nF

100nF

1234

Pgnd

2200 µF

−

V

P

−

out1

+

−

out2

+

diagin

10 kΩ

MGK080

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

PACKAGE OUTLINE

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

non-concave

x

D

E

h

view B: mounting base side

d

β

A

2

A
A

TDA8571J

SOT411-1

D

h

5
4

E

j

123

e

Z

DIMENSIONS (mm are the original dimensions)

UNIT A

mm

Note

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

4.6

4.3

A

2

1.15

0.85

4

1.65

1.35

bpcD

A

5

0.75

0.60

0.55

0.35

1

e

(1)

deD

30.4

28.0

27.5

12 2.54

29.9

w M

b

p

(1)

E

h

12.2

11.8

0 5 10 mm

scale

E

e

1.27

E

e

1

2

h

1

10.15

6

5.08

9.85

E

6.2

5.8

2

B

L

2

L

L

1.85

1.65

3

1

L

Q

m

LL

L

L

1

2

14.0

13.0

10.7

9.9

3.6

2.8

2.4

1.6

2

c

e

2

m

4.3

Qj

2.1

1.8

3

E

E

1

v M

(1)

Z

0.6

w

v

0.25

0.03x45°

β

1.43

0.78

OUTLINE
VERSION

SOT411-1

IEC JEDEC EIAJ

REFERENCES

1998 Mar 13 15

EUROPEAN

PROJECTION

ISSUE DATE

96-10-11
98-02-20

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

SOLDERING
Introduction

There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.

This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our

“IC Package Databook”

Soldering by dipping or by wave

The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.

(order code 9398 652 90011).

TDA8571J

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

Repairing soldered joints

Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, 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.

stg max

). If the

DEFINITIONS

Data sheet status

Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). 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

Where application information is given, it is advisory and does not form part of the specification.

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 customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.

1998 Mar 13 16

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

TDA8571J

NOTES

1998 Mar 13 17

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

TDA8571J

NOTES

1998 Mar 13 18

Philips Semiconductors Preliminary specification

4 x 40 W BTL quad car radio power
amplifier

TDA8571J

NOTES

1998 Mar 13 19

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Tel. [phone], Fax. [phone]
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TEL AVIV 61180, Tel. [phone], Fax. [phone]
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Tel. [phone]

Middle East: see Italy

Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB,

Tel. [phone], Fax. [phone]
New Zealand: 2 Wagener Place, C.P.O. Box 1041, AUCKLAND,

Tel. [phone], Fax. [phone]
Norway: Box 1, Manglerud 0612, OSLO,

Tel. [phone], Fax. [phone]
Philippines: Philips Semiconductors Philippines Inc.,

106 Valero St. Salcedo Village, P.O. Box 2108 MCC, MAKATI,
Metro MANILA, Tel. [phone], Fax. [phone]

Poland: Ul. Lukiska 10, PL 04-123 WARSZAWA,
Tel. [phone], Fax. [phone]

Portugal: see Spain
Romania: see Italy
Russia: Philips Russia, Ul. Usatcheva 35A, 119048 MOSCOW,

Tel. [phone], Fax. [phone]
Singapore: Lorong 1, Toa Payoh, SINGAPORE 1231,

Tel. [phone], Fax. [phone]

Slovakia: see Austria
Slovenia: see Italy
South Africa: S.A. PHILIPS Pty Ltd., 195-215 Main Road Martindale,

2092 JOHANNESBURG, P.O. Box 7430 Johannesburg 2000,
Tel. [phone], Fax. [phone]

South America: Al. Vicente Pinzon, 173, 6th floor,
04547-130 SÃO PAULO, SP, Brazil,
Tel. [phone], Fax. [phone]

Spain: Balmes 22, 08007 BARCELONA,
Tel. [phone], Fax. [phone]

Sweden: Kottbygatan 7, Akalla, S-16485 STOCKHOLM,
Tel. [phone], Fax. [phone]

Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH,
Tel. [phone], Fax. [phone]

Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1,
TAIPEI, Taiwan Tel. [phone], Fax. [phone]

Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd.,
209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260,
Tel. [phone], Fax. [phone]

Turkey: Talatpasa Cad. No. 5, 80640 GÜLTEPE/ISTANBUL,
Tel. [phone], Fax. [phone]

Ukraine: PHILIPS UKRAINE, 4 Patrice Lumumba str., Building B, Floor 7,
252042 KIEV, Tel. [phone], Fax. [phone]

United Kingdom: Philips Semiconductors Ltd., 276 Bath Road, Hayes,
MIDDLESEX UB3 5BX, Tel. [phone], Fax. [phone]

United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. [phone]

Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,

Tel. [phone], Fax.[phone]

For all other countries apply to: Philips Semiconductors,
International Marketing & Sales Communications, Building BE-p, P.O. Box 218,
5600 MD EINDHOVEN, The Netherlands, Fax. [phone]

© Philips Electronics N.V. 1998 SCA57
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.

Internet: http://www.semiconductors.philips.com

Printed in The Netherlands 545102/1200/01/pp20 Date of release: 1998 Mar 13 Document order number: 9397 750 03261