Datasheet TDA7056AT Specification

INTEGRATED CIRCUITS

DATA SH EET

TDA7056AT

3 W mono BTL audio amplifier with
DC volume control

Product specification
File under Integrated Circuits, IC01

1998 Feb 23

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC

TDA7056AT

volume control

FEATURES

• DC volume control

• Few external components

• Mute mode

• Thermal protection

• Short-circuit proof

• No switch-on or switch-off clicks

• Good overall stability

• Low power consumption

• Low HF radiation

• ESD protected on all pins.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V
P
G
∆G
I

q(tot)

P
o

v(max)

v

supply voltage 4.5 − 18 V
output power VP= 12 V; RL=16Ω 3 3.5 − W
maximum total voltage gain VP= 12 V; RL=16Ω 34.5 35.5 36.5 dB
voltage gain control range 75 80 − dB
total quiescent current VP= 12 V; RL= ∞− 816mA

THD total harmonic distortion P

GENERAL DESCRIPTION

The TDA7056AT is a mono Bridge-Tied Load (BTL) output
amplifier with DC volume control. It is designed for use in
TVs and monitors, but is also suitable for battery-fed
portable recorders and radios. The device is contained in
a 20-lead small outline package.

A Missing Current Limiter (MCL) is built in. The MCL circuit
is activated when the difference in current between the
output terminal of each amplifier exceeds 100 mA
(300 mA typ.). This level of 100 mA allows for
Single-Ended (SE) headphone applications.

= 0.5 W − 0.3 1 %

o

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

TDA7056AT SO20

PACKAGE

plastic small outline package with 20 leads; body width 7.5 mm

SOT163-1

1998 Feb 23 2

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

BLOCK DIAGRAM

handbook, full pagewidth

positive input

DC volume control

5

7

n.c.

1 to 3, 8 to 13,
16, 18 to 20

TDA7056AT

+

V

STABILIZER

ref

+

−

TEMPERATURE

PROTECTION

V

P

4

I + i

TDA7056AT

+

14

17I − i

positive output

−

negative output

ground

Fig.1 Block diagram.

signal

power

ground

15

MGM576

6

1998 Feb 23 3

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

PINNING

SYMBOL PIN DESCRIPTION

n.c. 1 not connected
n.c. 2 not connected
n.c. 3 not connected
V

P

V

I

GND1 6 signal ground
VC 7 DC volume control
n.c. 8 not connected
n.c. 9 not connected
n.c. 10 not connected
n.c. 11 not connected
n.c. 12 not connected
n.c. 13 not connected
OUT+ 14 positive output
GND2 15 power ground
n.c. 16 not connected
OUT− 17 negative output
n.c. 18 not connected
n.c. 19 not connected
n.c. 20 not connected

4 positive supply voltage
5 positive input

handbook, halfpage

n.c.

1

n.c.

2

n.c.

3

V

4

P

V

5

I

VC
n.c.
n.c.
n.c.

TDA7056AT

6
7
8
9

10

MGM577

GND1

Fig.2 Pin configuration.

TDA7056AT

n.c.

20
19

n.c.

18

n.c.

17

OUT−

16

n.c.
GND2

15

OUT+

14

n.c.

13

n.c.

12

n.c.

11

1998 Feb 23 4

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

FUNCTIONAL DESCRIPTION

The TDA7056AT is a mono BTL output amplifier with DC
volume control. It is designed for use in TVs and monitors
but is also suitable for battery-fed portable recorders and
radios.

In conventional DC volume circuits the control or input
stage is AC-coupled to the output stage via external
capacitors to keep the offset voltage low. In the
TDA7056AT the DC volume control stage is integrated into
the input stage so that no coupling capacitors are required.
With this configuration, a low offset voltage is still
maintained and the minimum supply voltage remains low.

The BTL principle offers the following advantages:

• Lower peak value of the supply current

• The frequency of the ripple on the supply voltage is twice

the signal frequency.

Consequently, a reduced power supply with smaller
capacitors can be used which also results in cost
reductions. For portable applications there is a trend to
decrease the supply voltage, resulting in a reduction of
output power at conventional output stages. Using the BTL
principle increases the output power.

TDA7056AT

The maximum gain of the amplifier is fixed at 35.5 dB.
The DC volume control stage has a logarithmic control
characteristic.

The total gain can be controlled from +35.5 to −44 dB.
If the DC volume control voltage is below 0.3 V, the device

switches to the mute mode.
The amplifier is short-circuit proof to ground, V

across the load. A thermal protection circuit is also
implemented. If the crystal temperature rises above
+150 °C the gain will be reduced, thereby reducing the
output power. Special attention is given to switch-on and
switch-off clicks, low HF radiation and a good overall
stability.

Power dissipation

Assume V

= 12 V; RL=16Ω.

P

The maximum sine wave dissipation is 1.8 W.
The R

Therefore T

of the package is 60 K/W.

th vj-a

amb(max)

= 150 − 60 × 1.8=42°C.

and

P

LIMITING VALUES

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

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

P

V

5, 7

I

ORM

I

OSM

P

tot

T

amb

T

stg

T

vj

t

sc

supply voltage − 18 V
input voltage pins 5 and 7 − 5V
repetitive peak output current − 1.25 A
non-repetitive peak output current − 1.5 A
total power dissipation T

< 60 °C − 1.5 W

case

operating ambient temperature −40 +85 °C
storage temperature −55 +150 °C
virtual junction temperature − 150 °C
short-circuit time − 1h

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS VALUE UNIT

R

th(j-a)

thermal resistance from junction to ambient in free air 60 K/W

1998 Feb 23 5

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC

TDA7056AT

volume control

CHARACTERISTICS

V

= 12 V; VDC= 1.4 V; f = 1 kHz; RL=16Ω; T

P

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

P

I

q(tot)

Maximum gain (V

P

o

supply voltage 4.5 − 18 V
total quiescent current RL= ∞; note 1 − 816mA

= 1.4 V)

7

output power THD = 10%; RL=16Ω 3 3.5 − W
THD total harmonic distortion P
G

v(max)

V

i(rms)

V

n(o)(rms)

maximum total voltage gain 34.5 35.5 36.5 dB

input signal handling (RMS value) VVC= 0.8 V; THD < 1% 0.5 0.65 − V

noise output voltage (RMS value) f = 500 kHz; note 2 − 210 −µV
B bandwidth at −1dB − 0.02 to 300 − kHz
SVRR supply voltage ripple rejection note 3 38 46 − dB

∆V

 DC output offset voltage V17− v14−0 150 mV

OS

Z

i

Minimum gain (V

G

v

V

o(n)(rms)

input impedance (pin 3) 15 20 25 kΩ

= 0.5 V)

7

voltage gain −−44 − dB

noise output voltage (RMS value) note 4 − 20 30 µV

Mute position

V

o(mute)

output voltage in mute position VVC≤ 0.3 V;

=25°C; unless otherwise specified (see Fig.14).

amb

= 0.5 W − 0.3 1 %

o

− 35 45 µV

VI= 600 mV; note 4

DC volume control

∆G
I

VC

v

voltage gain control range 75 80 − dB

control current VVC=0V 60 70 80 µA

Notes

1. With a load connected to the outputs the quiescent current will increase, the maximum value of this increase being
equal to the DC output offset voltage divided by R

2. The noise output voltage (V

) at f = 500 kHz, is measured with Rs=0Ω and B = 5 kHz.

n(o)(rms)

3. The ripple rejection is measured with Rs=0Ω and f = 100 Hz to 10 kHz. The ripple voltage (V

.

L

= 200 mV RMS)

ripple

is applied to the positive supply rail.

4. The noise output voltage (V

) is measured with Rs=5kΩ unweighted.

n(o)(rms)

1998 Feb 23 6

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

20

handbook, halfpage

I

q

(mA)

16

12

8

4

0

04 2081216

MGM578

VP (V)

12

handbook, halfpage

THD

(%)

10

8

6

4

2

0

−1

10

TDA7056AT

MGM579

(1)

110

Po (W)

V5= 1.4V; no load.

Fig.3 Quiescent current as a function of the

supply voltage.

handbook, halfpage

8

THD

(%)

6

4

2

0

10 10

(1)

2

3

10

4

10

MGM580

f (Hz)

VDC= 1.4 V.
(1) VP= 12 V; RL=16Ω.

Fig.4 THD as a function of output power.

100

handbook, halfpage

RR

(dB)

80

60

40

20

5

10

0

10 10

2

3

10

MGM581

(1)

(2)

(3)

4

10

f (Hz)

5

10

VP= 12 V, Po= 0.5 W, VDC= 1.4 V.
(1) RL=16Ω.

Fig.5 THD as a function of frequency.

1998 Feb 23 7

VP= 12 V; RL=16Ω; Vr= 200 mV.
(1) V7= 0.3 V; Rs=5kΩ.
(2) V7= 1.4 V; Rs=0Ω.
(3) V7= 1.4 V; Rs=5kΩ.

Fig.6 Ripple rejection as a function of frequency.

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

40

handbook, halfpage

gain
(dB)

20

0

−20

−40

−60

−80

0 1.2 2.00.4 1.60.8

MGM582

V7 (V)

1000

handbook, halfpage

V

n

(µV)

800

600

400

200

0

0 1.2 2.0

TDA7056AT

MGM583

0.4 1.60.8
V7 (V)

Fig.7 Gain control as a function of DC volume

control.

1000

handbook, halfpage

V

i

(mV)

800

600

400

200

0

04 2081216

T

=25°C; THD = 1%; RL=16Ω; VDC= 0.8 V.

amb

MGM584

VP (V)

Measured with Rs=5kΩ unweighted; f = 22 Hz to 22 kHz.

Fig.8 Noise output voltage as a function of DC

volume control.

handbook, halfpage

5

P

o

(W)

4

3

2

1

0

04 2081216

Measured at THD = 10%. The maximum output power is limited by
the maximum power dissipation and the maximum available output
current.

=8Ω.

(1) R

L

(2) RL=16Ω.
(3) RL=25Ω.

(1) (2) (3)

MGM585

VP (V)

Fig.9 Input signal handling as a function of the

supply voltage.

1998 Feb 23 8

Fig.10 Output power as a function of the supply

voltage.

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

handbook, halfpage

3

P

(W)

2

1

0

0

(1) RL=8Ω.
(2) RL=16Ω.
(3) RL=25Ω.

(1) (3)(2)

420

81216

MGM586

VP (V)

100

handbook, halfpage

I

5

(µA)

60

20

−20

−60

−100

0 1.2 2.0

TDA7056AT

MGM587

0.4 1.60.8
V7 (V)

Fig.11 Total worst case power dissipation as a

function of supply voltage.

Fig.12 Control current as a function of DC volume

control.

1998 Feb 23 9

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

handbook, full pagewidth

TDA7056AT

a. Top view of bottom copper.

−OUT

+OUT

GND

20

TDA7056A/BT

220 µF

100 nF

+V

P

0.47 µF

1

D&A AUDIO POWER

CIC NIJMEGEN

b. Top view of component side.

5 kΩ

100

nF

volume

IN

MGM591

Fig.13 Printed-circuit board layout.

1998 Feb 23 10

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

TEST AND APPLICATION INFORMATION
Test conditions

T

=25°C if not specified: VP= 12 V; VDC= 1.4 V;

amb

f = 1 kHz; RL=16Ω; audio bandpass: 22 Hz to 22 kHz.
In Figures 5 and 6 a low-pass filter of 80 kHz was applied.

It should be noted that capacitive loads (100 pF and 5 nF)
connected between the output pins to a common ground
can cause oscillations. The BTL application circuit diagram
is shown in Fig.14. To avoid instabilities and too high
distortion, the input and power ground traces must be
separated as far as possible and connected together as
close as possible to the IC. The quiescent current has
been measured without load impedance.

Voltage gain

The maximum closed-loop voltage gain has been
internally fixed at 35.5 dB. The input sensitivity at
maximum gain for P
The gain bandwidth is 20 Hz to 300 kHz within 1 dB.

Output power

The output power as a function of supply voltage has been
measured at THD = 10%. The maximum output power is
limited by the maximum allowed power dissipation at
T

=25°C approximately 2 W, and the maximum

amb

available output current is 1.25 A repetitive peak current.

= 3 W (RL=16Ω) is 115 mV.

o

TDA7056AT

Thermal behaviour:

The measured thermal resistance of the IC package is
highly dependent on the configuration and size of the
application board. Data may not be comparable between
different semiconductors manufacturers because the
application boards and test methods are not (yet)
standardized. The thermal performance of packages for a
specific application may also be different than presented
here, because the configuration of the application boards
(copper area) may be different. Philips Semiconductors
uses FR-4 type application boards with 1 oz copper traces
with solder coating. The measurements have been carried
out with vertical placed boards.

Using a practical PCB layout with wider copper tracks and
some copper area to the IC pins and just under the IC, the
thermal resistance from junction to ambient can be
reduced. In the demonstration application PCB the

= 56 K/W for the SO20 plastic package. For a

R

th(j-a)

maximum ambient temperature of T
following calculation can be made for the maximum power

dissipation:

For the application at V

150 K/W 50 K/W–()

------------------------------------------------------­56 K/W

= 12 V and RL=16Ω the worst

P

case sine wave dissipation is 1.85 W. Because in practice
the ‘music-power’ causes about the half of the sine wave
dissipation, this application (V

= 12 V; RL=16Ω) has

P

been allowed.

=50°C the

amb

1.79 W=

Switch-on/switch-off

The switch-on behaviour depends on the following:

• The rise time of the power supply (if t

> 40 ms for

r

VP= 0 to 12 V then the switch-on behaviour will be
good)

• The input capacitor and source impedance (a higher
source impedance and/or lower input capacitor value
will have a positive influence on the switch-on/switch-off
behaviour)

• The DC volume control pin (a capacitor of >0.1 µF
avoids disturbances).

1998 Feb 23 11

Short-circuit protection:

The output pins (pins 14 and 17) can be short-circuited to
ground respectively to +V

. The Missing Current Limiter

P

(MCL) protection circuit will shut-off the amplifier.
Removing the short-circuit will reset the amplifier
automatically. Short-circuit across the load
(pins 14 and 17) will activate the thermal protection circuit;
this will result in reducing the short-circuit current.

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

handbook, full pagewidth

n.c.

1 to 3, 8 to 13,
16, 18 to 20

positive input

0.47 µF

5

R

s

kΩ

DC
volume
control

5

7

TDA7056AT

+

V

STABILIZER

ref

+

−

TEMPERATURE

PROTECTION

4

I + i

TDA7056AT

V

(1)

100 nF

6

15

220 µF

+

14

−

17I − i

P

RL = 16 Ω

MGM588

ground

To avoid instabilities and too high distortion, the input- and power ground must be separated as long as possible and connected together as close as
possible to the IC.

(1) This capacitor can be omitted if the 220 µF electrolytic capacitor is connected close to pin 2.

Fig.14 Test and application diagram.

For single-end application the output peak current may not exceed 100 mA; at higher output currents the short circuit
protection (MLC) will be activated.

1998 Feb 23 12

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

handbook, halfpage

volume

1 µF

control

100 kΩ

7

TDA7056AT

GND

MGM589

handbook, halfpage

1 µF

volume

control

TDA7056AT

VP = 12 V

82 kΩ

7 TDA7056AT

22 kΩ

GND

MGM590

Fig.15 Application with potentiometer as volume

control; maximum gain = 30 dB.

Fig.16 Application with potentiometer as volume

control; maximum gain = 36 dB.

1998 Feb 23 13

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

PACKAGE OUTLINE

SO20: plastic small outline package; 20 leads; body width 7.5 mm

D

c

y

Z

20

11

TDA7056AT

SOT163-1

E

H

E

A

X

v M

A

pin 1 index

1

e

0 5 10 mm

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

mm

A

max.

2.65

0.10

A

1

0.30

0.10

0.012

0.004

A2A

2.45

2.25

0.096

0.089

0.25

0.01

b

p

cD

0.32

0.23

0.013

0.009

3

0.49

0.36

0.019

0.014

UNIT

inches

Note

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

10

w M

b

p

scale

(1)E(1) (1)

13.0

12.6

0.51

0.49

eHELLpQ

7.6

1.27

7.4

0.30

0.050

0.29

10.65

10.00

0.419

0.394

Q

A

2

A

1

1.4

0.055

1.1

0.4

0.043

0.016

detail X

1.1

1.0

0.043

0.039

(A )

L

p

L

0.25

0.01

A

3

θ

0.25 0.1

0.01

ywv θ

Z

0.9

0.4

0.035

0.004

0.016

o

8

o

0

OUTLINE

VERSION

SOT163-1

IEC JEDEC EIAJ

075E04 MS-013AC

REFERENCES

1998 Feb 23 14

EUROPEAN

PROJECTION

ISSUE DATE

95-01-24
97-05-22

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

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”

Reflow soldering

Reflow soldering techniques are suitable for all SO
packages.

Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.

Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.

Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.

(order code 9398 652 90011).

TDA7056AT

Wave soldering

Wave soldering techniques can be used for all SO
packages if the following conditions are observed:

• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.

• The longitudinal axis of the package footprint must be
parallel to the solder flow.

• The package footprint must incorporate solder thieves at
the downstream end.

During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.

Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.

A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.

Repairing soldered joints

Fix the component by first soldering two diagonally­opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.

1998 Feb 23 15

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC

TDA7056AT

volume control

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 Feb 23 16

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

NOTES

TDA7056AT

1998 Feb 23 17

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

NOTES

TDA7056AT

1998 Feb 23 18

Philips Semiconductors Product specification

3 W mono BTL audio amplifier with DC
volume control

NOTES

TDA7056AT

1998 Feb 23 19

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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 545102/25/01/pp20 Date of release: 1998Feb 23 Document order number: 9397 75003253