April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

FEATURES

Full-wave commutation (using push/pull drivers at the
output stages) without position sensors

Built-in start-up circuitry

Three push-pull outputs:

0.8 A output current (typ.)

low saturation voltage

built-in current limiter

Thermal protection

Flyback diodes

Tacho output without extra sensor

Position pulse stage for phase-locked-loop control

Transconductance amplifier for an external control
transistor.

APPLICATIONS

VCR

Laser beam printer

Fax machine

Blower

Automotive.

GENERAL DESCRIPTION

The TDA5140A is a bipolar integrated circuit used to drive
3-phase brushless DC motors in full-wave mode. The
device is sensorless (saving of 3 hall-sensors) using the
back-EMF sensing technique to sense the rotor position.

QUICK REFERENCE DATA

Measured over full voltage and temperature range.

Notes

1. An unstabilized supply can be used.

2. V

VMOT

= V

; +AMP IN =

AMP IN = 0 V; all outputs I

= 0 mA.

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

supply voltage

note 1

VMOT

input voltage to the output
driver stages

note 2

1.7

drop-out output voltage

= 100 mA

0.93

1.05

LIM

current limiting

VMOT

= 10 V; R

= 3.9

0.7

0.8

EXTENDED TYPE NUMBER

PACKAGE

PINS

PIN POSITION

MATERIAL

CODE

TDA5140A

DIL

plastic

SOT102

TDA5140AT

SOL

plastic

SOT163A

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

BLOCK DIAGRAM

BBBBBBBBBBBBBB

BBBBBBBBBBBB

BBBBBBBBBBBBB

BBBBBBBBB

BBBBBBBBBBBBB

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

BBBBBBBBBBBBBBBBBBBB

BBBBBBBBB

BBBBBBBBBBB

BBBBBBBBBBBBBBBBBBBBBBB

BBBBBBBBBBBBBBBBBBBBBBBBBBB

Fig.1 Block diagram (SOT102; DIL18).

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

PINNING

SYMBOL

PIN

DIL18

PIN

SO20

DESCRIPTION

MOT1

driver output 1

TEST

test input/output

n.c.

not connected

MOT2

driver output 2

VMOT

input voltage for the output driver stages

PG IN

position generator: input from the position detector sensor to the position
detector stage (optional); only if an external position coil is used

PG/FG

position generator/frequency generator: output of the rotation speed and position
detector stages (open collector digital output, negative-going edge is valid)

GND2

ground supply return for control circuits

positive supply voltage

CAP-CD

external capacitor connection for adaptive communication delay timing

CAP-DC

external capacitor connection for adaptive communication delay timing copy

CAP-ST

external capacitor connection for start-up oscillator

CAP-TI

external capacitor connection for timing

+AMP IN

non-inverting input of the transconductance amplifier

AMP IN

inverting input of the transconductance amplifier

AMP OUT

transconductance amplifier output (open collector)

MOT3

driver output 3

n.c.

not connected

MOT0

input from the star point of the motor coils

GND1

ground (0 V) motor supply return for output stages

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

Fig.2 Pin configuration (SOT102; DIL18).

Fig.3 Pin configuration (SOT163A; SO20L).

FUNCTIONAL DESCRIPTION

The TDA5140A offers a sensorless three phase motor
drive function. It is unique in its combination of sensorless
motor drive and full-wave drive. The TDA5140A offers
protected outputs capable of handling high currents and
can be used with star or delta connected motors. It can
easily be adapted for different motors and applications.
The TDA5140A offers the following features:

Sensorless commutation by using the motor EMF.

Built-in start-up circuit.

Optimum commutation, independent of motor type or
motor loading.

Built-in flyback diodes.

Three phase full-wave drive.

High output current (0.8 A).

Outputs protected by current limiting and thermal
protection of each output transistor.

Low current consumption by adaptive base-drive.

Accurate frequency generator (FG) by using the
motor EMF.

Amplifier for external position generator (PG) signal.

Suitable for use with a wide tolerance, external PG
sensor.

Built-in multiplexer that combines the internal FG and
external PG signals on one pin for easy use with a
controlling microprocessor.

Uncommitted operational transconductance amplifier
(OTA), with a high output current, for use as a control
amplifier.

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

LIMITING VALUES

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

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

supply voltage

input voltage; all pins except
VMOT

18 V

0.3

+ 0.5

VMOT

VMOT input voltage

0.5

output voltage

AMP OUT and PG/FG

GND

MOT1, MOT2 and MOT3

VMOT

+ V

DHF

input voltage CAP-ST, CAP-TI,
CAP-CD and CAP-DC

2.5

stg

storage temperature

+150

amb

operating ambient temperature

+70

tot

total power dissipation

see Figs 4 and 5

electrostatic handling

see "Handling"

500

Fig.4 Power derating curve (SOT102; DIL18).

P tot

(W)

200

MBD535

100

150

T ( C)

amb

2.28

1.05

Fig.5 Power derating curve (SOT163A; SO20L).

P tot

(W)

200

MBD536

100

150

T ( C)

amb

1.38

HANDLING

Every pin withstands the ESD test in accordance with

"MIL-STD-883C class 2". Method 3015 (HBM 1500

, 100 pF)

3 pulses + and 3 pulses

on each pin referenced to ground.

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

CHARACTERISTICS

= 14.5 V; T

amb

= 25

C; unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply

supply voltage

note 1

supply current

note 2

3.7

VMOT

input voltage to the output driver
stages

see Fig.1

1.7

Thermal protection

local temperature at
temperature sensor causing
shut-down

130

140

150

reduction in temperature before
switch-on

after shut-down

MOT0; centre tap

input voltage

0.5

VMOT

input bias current

0.5 V

VMOT

1.5 V

CSW

comparator switching level

note 3

CSW

variation in comparator
switching levels

hys

comparator input hysteresis

MOT1, MOT2 and MOT3

drop-out output voltage

= 100 mA

0.93

1.05

= 500 mA

1.65

1.80

variation in saturation voltage
between lower transistors

= 100 mA

180

variation in saturation voltage
between upper transistors

100 mA

180

LIM

current limiting

VMOT

= 10 V; R

= 6.8

0.7

0.8

DHF

diode forward voltage (diode D

) I

500 mA; notes 4

and 5; see Fig.1

1.5

DLF

diode forward voltage (diode D

)

= 500 mA; notes 4 and

5; see Fig.1

1.5

peak diode current

note 5

+AMP IN and

AMP IN

input voltage

0.3

1.7

differential mode voltage without
'latch-up'

input bias current

650

input capacitance

offset

input offset voltage

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

AMP OUT (open collector)

output sink current

sat

saturation voltage

= 40 mA

1.5

2.1

output voltage

0.5

+18

slew rate

= 330

; C

= 50 pF

mA/

transfer gain

0.3

PG IN

input voltage

0.3

input bias current

650

input resistance

CWS

comparator switching level

107

hys

comparator input hysteresis

PG/FG (open collector)

LOW level output voltage

= 1.6 mA

0.4

OH(max)

maximum HIGH level output
voltage

THL

HIGH-to-LOW transition time

= 50 pF; R

= 10 k

0.5

ratio of PG/FG frequency and
commutation frequency

1 : 2

duty factor

pulse width LOW

after a PG IN pulse

CAP-ST

sink

output sink current

1.5

2.0

2.5

source

output source current

2.5

2.0

1.5

SWL

LOW level switching voltage

0.20

SWH

HIGH level switching voltage

2.20

CAP-TI

sink

output sink current

source

output source current

0.05 V < V

CAP-TI

< 0.3 V

0.3 V < V

CAP-TI

< 2.2 V

SWL

LOW level switching voltage

SWM

MIDDLE level switching voltage

0.30

SWH

HIGH level switching voltage

2.20

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

Notes

1. An unstabilized supply can be used.

2. V

VMOT

= V

, all other inputs at 0 V; all outputs at V

; I

= 0 mA.

3. Switching levels with respect to MOT1, MOT2 and MOT3.

4. Drivers are in the high-impedance OFF-state.

5. The outputs are short-circuit protected by limiting the current and the IC temperature.

APPLICATION INFORMATION

CAP-CD

sink

output sink current

10.6

16.2

source

output source current

5.3

8.1

sink

source

ratio of sink to source current

1.85

2.05

2.25

LOW level input voltage

850

875

900

HIGH level input voltage

2.3

2.4

2.55

CAP-DC

sink

output sink current

10.1

15.5

20.9

source

output source current

20.9

15.5

10.1

sink

source

ratio of sink to source current

0.9

1.025

1.15

LOW level input voltage

850

875

900

HIGH level input voltage

2.3

2.4

2.55

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Fig.6 Application diagram without use of the operational transconductance amplifier (OTA).

(1) Value selected for 3 Hz start-up oscillator frequency.

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

Introduction (see Fig.7)

Full-wave driving of a three phase motor requires three
push-pull output stages. In each of the six possible states
two outputs are active, one sourcing (H) and one sinking
(L). The third output presents a high impedance (Z) to the
motor which enables measurement of the motor
back-EMF in the corresponding motor coil by the EMF
comparator at each output. The commutation logic is
responsible for control of the output transistors and
selection of the correct EMF comparator. In Table 1 the
sequence of the six possible states of the outputs has
been depicted.

Table 1 Output states.

Note

1. H = HIGH state;

L = LOW state;
Z = high impedance OFF-state.

The zero-crossing in the motor EMF (detected by the
comparator selected by the commutation logic) is used to
calculate the correct moment for the next commutation,
that is, the change to the next output state. The delay is
calculated (depending on the motor loading) by the
adaptive commutation delay block.

STATE

MOT1

(1)

MOT2

(1)

MOT3

(1)

Because of high inductive loading the output stages
contain flyback diodes. The output stages are also
protected by a current limiting circuit and by thermal
protection of the six output transistors.

The detected zero-crossings are used to provide speed
information. The information has been made available on
the PG/FG output pin. This is an open collector output and
provides an output signal with a frequency that is half the
commutation frequency. A VCR scanner also requires a
PG phase sensor. This circuit has an interface for a simple
pick-up coil. A multiplexer circuit is also provided to
combine the FG and PG signals in time.

The system will only function when the EMF voltage from
the motor is present. Therefore, a start oscillator is
provided that will generate commutation pulses when no
zero-crossings in the motor voltage are available.

A timing function is incorporated into the device for internal
timing and for timing of the reverse rotation detection.

The TDA5140A also contains an uncommitted
transconductance amplifier (OTA) that can be used as a
control amplifier. The output is capable of directly driving
an external power transistor.

The TDA5140A is designed for systems with low current
consumption: use of I

L logic, adaptive base drive for the

output transistors (patented), possibility of using a pick-up
coil without bias current.

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

BBBBBBBBBBB

BBBBBBBBB

BBBBBBBBBB

BBBBBBB

BBBBBBBBBB

BBBBBBBB

BBBBBBBBBBBBBBBBB

BBBBBBB

BBBBBBBB

Fig.7 Typical application of the TDA5140A as a scanner driver, with use of OTA.

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

Adjustments

The system has been designed in such a way that the
tolerances of the application components are not critical.
However, the approximate values of the following
components must still be determined:

The start capacitor; this determines the frequency of the
start oscillator.

The two capacitors in the adaptive commutation delay
circuit; these are important in determining the optimum
moment for commutation, depending on the type and
loading of the motor.

The timing capacitor; this provides the system with its
timing signals.

HE START CAPACITOR

(CAP-ST)

This capacitor determines the frequency of the start
oscillator. It is charged and discharged, with a current of
2

A, from 0.05 to 2.2 V and back to 0.05 V. The time

taken to complete one cycle is given by:

start

= (2.15

C) s (with C in

The start oscillator is reset by a commutation pulse and so
is only active when the system is in the start-up mode. A
pulse from the start oscillator will cause the outputs to
change to the next state (torque in the motor). If the
movement of the motor generates enough EMF the
TDA5140A will run the motor. If the amount of EMF
generated is insufficient, then the motor will move one step
only and will oscillate in its new position. The amplitude of
the oscillation must decrease sufficiently before the arrival
of the next start pulse, to prevent the pulse arriving during
the wrong phase of the oscillation. The oscillation of the
motor is given by:

where:

= torque constant (N.m/A)

I = current (A)

p = number of magnetic pole-pairs

J = inertia J (kg.m

)

osc

-----------------------

-----------------------------------

Example: J = 72

-6

kg.m

, K = 25

-3

N.m/A, p = 6

and I = 0.5 A; this gives f

osc

= 5 Hz. If the damping is high

then a start frequency of 2 Hz can be chosen or t = 500 ms,
thus C = 0.5/2 = 0.25

F, (choose 220 nF).

HE ADAPTIVE COMMUTATION DELAY

(CAP-CD

AND

CAP-DC)

In this circuit capacitor CAP-CD is charged during one
commutation period, with an interruption of the charging
current during the diode pulse. During the next
commutation period this capacitor (CAP-CD) is discharged
at twice the charging current. The charging current is
8.1

A and the discharging current 16.2

A; the voltage

range is from 0.9 to 2.2 V. The voltage must stay within this
range at the lowest commutation frequency of interest, f

(C in nF)

If the frequency is lower, then a constant commutation
delay after the zero-crossing is generated by the discharge
from 2.2 to 0.9 V at 16.2

maximum delay = (0.076

C) ms (with C in nF)

Example: nominal commutation frequency = 900 Hz and
the lowest usable frequency = 400 Hz, so:

(choose 18 nF)

The other capacitor, CAP-DC, is used to repeat the same
delay by charging and discharging with 15.5

A. The same

value can be chosen as for CAP-CD. Figure 8 illustrates
typical voltage waveforms.

8.1

1.3

--------------------------

6231

-------------

CAP-CD

6231

400

-------------

15.6

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

Fig.8 CAP-CD and CAP-DC typical voltage waveforms in normal running mode.

HE TIMING CAPACITOR

(CAP-TI)

Capacitor CAP-TI is used for timing the successive steps
within one commutation period; these steps include some
internal delays.

The most important function is the watchdog time in which
the motor EMF has to recover from a negative diode-pulse
back to a positive EMF voltage (or vice versa). A watchdog
timer is a guarding function that only becomes active when
the expected event does not occur within a predetermined
time.

The EMF usually recovers within a short time if the motor
is running normally (

ms). However, if the motor is

motionless or rotating in the reverse direction, then the
time can be longer (

ms).

A watchdog time must be chosen so that it is long enough
for a motor without EMF (still) and eddy currents that may
stretch the voltage in a motor winding; however, it must be
short enough to detect reverse rotation. If the watchdog

time is made too long, then the motor may run in the wrong
direction (with little torque).

The capacitor is charged, with a current of 57

A, from

0.2 to 0.3 V. Above this level it is charged, with a current of
5

A, up to 2.2 V only if the selected motor EMF remains

in the wrong polarity (watchdog function). At the end, or, if
the motor voltage becomes positive, the capacitor is
discharged with a current of 28

A. The watchdog time is

the time taken to charge the capacitor, with a current of
5

A, from 0.3 to 2.2 V.

To ensure that the internal delays are covered CAP-TI
must have a minimum value of 2 nF. For the watchdog
function a value for CAP-TI of 10 nF is recommended.

To ensure a good start-up and commutation, care must be
taken that no oscillations occur at the trailing edge of the
flyback pulse. Snubber networks at the outputs should be
critically damped.

Typical voltage waveforms are illustrated by Fig.9.

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

Fig.9 Typical CAP-TI and V

MOT1

voltage waveforms in normal running mode.

If the chosen value of CAP-TI is too small oscillations can occur in certain positions of a blocked rotor. If the chosen value is too large, then it
is possible that the motor may run in the reverse direction (synchronously with little torque).

Other design aspects

There are other design aspects concerning the application
of the TDA5140A besides the commutation function. They
are:

Generation of the tacho signal FG

A built-in interface for a PG sensor

General purpose operational transconductance
amplifier (OTA)

Possibilities of motor control

Reliability.

SIGNAL

The FG signal is generated in the TDA5140A by using the
zero-crossing of the motor EMF from the three motor
windings. Every zero-crossing in a (star connected) motor
winding is used to toggle the FG output signal. The FG
frequency is therefore half the commutation frequency.
All transitions indicate the detection of a zero-crossing
(except for PG). The negative-going edges are called FG
pulses because they generate an interrupt in a controlling
microprocessor.

The accuracy of the FG output signal (jitter) is very good.
This accuracy depends on the symmetry of the motor's
electromagnetic construction, which also effects the
satisfactory functioning of the motor itself.

Example: A 3-phase motor with 6 magnetic pole-pairs at
1500 rpm and with a full-wave drive has a commutation
frequency of 25

6 = 900 Hz, and generates a tacho

signal of 450 Hz.

SIGNAL

The accuracy of the PG signal in applications such as VCR
must be high (phase information). This accuracy is
obtained by combining the accurate FG signal with the PG
signal by using a wide tolerance external PG sensor. The
external PG signal (PG IN) is only used as an indicator to
select a particular FG pulse. This pulse differs from the
other FG pulses in that it has a short LOW-time of 18

after a HIGH-to-LOW transition. All other FG pulses have
a 50% duty factor (see Fig.10).

For more information also see

"application note

EIE/AN 93014".

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

PERATIONAL

RANSCONDUCTANCE

MPLIFIER

(OTA)

The OTA is an uncommitted amplifier with a high output
current (40 mA) that can be used as a control amplifier.
The common mode input range includes ground (GND)
and rises to V

1.7 V. The high sink current enables the

OTA to drive a power transistor directly in an analog
control amplifier.

Although the gain is not extremely high (0.3 S), care must
be taken with the stability of the circuit if the OTA is used
as a linear amplifier as no frequency compensation has
been provided.

The convention for the inputs (inverting or not) is the same
as for a normal operational amplifier: with a resistor (as
load) connected from the output (AMP OUT) to the positive
supply, a positive-going voltage is found when the
non-inverting input (+AMP IN) is positive with respect to
the inverting input (

AMP IN). Confusion is possible

because a 'plus' input causes less current, and so a
positive voltage.

OTOR

ONTROL

DC motors can be controlled in an analog manner using
the OTA.

For the control an external transistor is required. The OTA
can supply the base current for this transistor and act as a
control amplifier (see Fig.7).

ELIABILITY

It is necessary to protect high current circuits and the
output stages are protected in two ways:

Current limiting of the 'lower' output transistors. The
'upper' output transistors use the same base current as
the conducting 'lower' transistor (+15%). This means
that the current to and from the output stages is limited.

Thermal protection of the six output transistors is
achieved by each transistor having a thermal sensor
that is active when the transistor is switched on. The
transistors are switched off when the local temperature
becomes too high.

It is possible, that when braking, the motor voltage (via the
flyback diodes and the impedance on VMOT) may cause
higher currents than allowed (

0.6 A). These currents

must be limited externally.

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

SOLDERING

Plastic dual in-line packages

Y DIP OR WAVE

The maximum permissible temperature of the solder is
260

C; this temperature must not be in contact with the

joint for more than 5 s. The total contact time of successive
solder waves must not exceed 5 s.

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

EPAIRING SOLDERED JOINTS

Apply the soldering iron below the seating plane (or not
more than 2 mm above it). If its temperature is below
300

C, it must not be in contact for more than 10 s; if

between 300 and 400

C, for not more than 5 s.

Plastic small-outline packages

Y WAVE

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

Maximum permissible solder temperature is 260

C, and

maximum duration of package immersion in solder bath is
10 s, if allowed to cool to less than 150

C within 6 s.

Typical dwell time is 4 s at 250

A modified wave soldering technique is recommended
using two solder waves (dual-wave), in which a turbulent
wave with high upward pressure is followed by a smooth
laminar wave. Using a mildly-activated flux eliminates the
need for removal of corrosive residues in most
applications.

Y SOLDER PASTE REFLOW

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

Several techniques exist for reflowing; for example,
thermal conduction by heated belt, infrared, and
vapour-phase reflow. Dwell times vary between 50 and
300 s according to method. Typical reflow temperatures
range from 215 to 250

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

EPAIRING SOLDERED JOINTS

(

BY HAND

HELD SOLDERING

IRON OR PULSE

HEATED SOLDER TOOL

)

Fix the component by first soldering two, diagonally
opposite, end pins. Apply the heating tool to the flat part of
the pin only. Contact time must be limited to 10 s at up to
300

C. When using proper tools, all other pins can be

soldered in one operation within 2 to 5 s at between 270
and 320

C. (Pulse-heated soldering is not recommended

for SO packages.)

For pulse-heated solder tool (resistance) soldering of VSO
packages, solder is applied to the substrate by dipping or
by an extra thick tin/lead plating before package
placement.

April 1994

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDA5140A

DEFINITIONS

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.

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.

Philips Semiconductors

Philips Semiconductors a worldwide company

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SCARBOROUGH, ONTARIO, M1B 1M8,
Tel. (0416)292 5161 ext. 2336, Fax. (0416)292 4477

Chile: Av. Santa Maria 0760, SANTIAGO,

Tel. (02)773 816, Fax. (02)777 6730

Colombia: Carrera 21 No. 56-17, BOGOTA, D.E., P.O. Box 77621,

Tel. (571)217 4609, Fax. (01)217 4549

Denmark: Prags Boulevard 80, PB 1919, DK-2300 COPENHAGEN S,

Tel. (032)88 2636, Fax. (031)57 1949

Finland: Sinikalliontie 3, FIN-02630 ESPOO,

Tel. (9)0-50261, Fax. (9)0-520971

France: 4 Rue du Port-aux-Vins, BP317,

92156 SURESNES Cedex,
Tel. (01)4099 6161, Fax. (01)4099 6427

Germany: P.O. Box 10 63 23, 20095 HAMBURG ,

Tel. (040)3296-0, Fax. (040)3296 213

Greece: No. 15, 25th March Street, GR 17778 TAVROS,

Tel. (01)4894 339/4894 911, Fax. (01)4814 240

Hong Kong: 15/F Philips Ind. Bldg., 24-28 Kung Yip St.,

KWAI CHUNG, N.T. Tel. (0)4245 121, Fax. (0)4806 960

India: Philips Components Division,

A Block Shivsagar Estate Worli,
Dr. Annie Besant Rd., Bombay 400 018
Tel. (022)4938 541, Fax. (022)4938 722

Indonesia: Philips House, Jalan H.R. Rasuna Said Kav. 3-4,

P.O. Box 4252, JAKARTA 12950,
Tel. (021)5201 122, Fax. (021)5205 189

Ireland: Newstead, Clonskeagh, DUBLIN 14,

Tel. (01)640 000, Fax. (01)640 200

Italy: Viale F. Testi, 327, 20162 MILANO,

Tel. (02)6752.3358, Fax. (02)6752.3350

Japan: Philips Bldg 13-37, Kohnan 2 -chome, Minato-ku, TOKYO 108,

Tel. (03)3740 5028, Fax. (03)3740 0580

Korea: (Republic of) Philips House, 260-199 Itaewon-dong,

Yongsan-ku, SEOUL, Tel. (02)794-5011, Fax. (02)798-8022

Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA,

SELANGOR, Tel. (03)750 5214, Fax. (03)757 4880

Mexico: Philips Components, 5900 Gateway East, Suite 200,

EL PASO, TX 79905, Tel. 9-5(800)234-7381, Fax. (708)296-8556

Netherlands: Postbus 90050, 5600 PB EINDHOVEN,

Tel. (040)78 37 49, Fax. (040)78 83 99

New Zealand: 2 Wagener Place, C.P.O. Box 1041, AUCKLAND,

Tel. (09)849-4160, Fax. (09)849-7811

Norway: Box 1, Manglerud 0612, OSLO,

Tel. (022)74 8000, Fax. (022)74 8341

Pakistan: Philips Markaz, M.A. Jinnah Rd., KARACHI 3,

Tel. (021)577 039, Fax. (021)569 1832

Philippines: PHILIPS SEMICONDUCTORS PHILIPPINES Inc,

106 Valero St. Salcedo Village, P.O. Box 2108 MCC, MAKATI,
Metro MANILA, Tel. (02)810 0161, Fax. (02)817 3474

Portugal: Av. Eng. Duarte Pacheco 6, 1009 LISBOA Codex,

Tel. (01)683 121, Fax. (01)658 013

Singapore: Lorong 1, Toa Payoh, SINGAPORE 1231,

Tel. (65)350 2000, Fax. (65)251 6500

South Africa: 195-215 Main Road, Martindale,

P.O. Box 7430,JOHANNESBURG 2000,
Tel. (011)470-5911, Fax. (011)470-5494

Spain: Balmes 22, 08007 BARCELONA,

Tel. (03)301 6312, Fax. (03)301 42 43

Sweden: Kottbygatan 7, Akalla. S-164 85 STOCKHOLM,

Tel. (0)8-632 2000, Fax. (0)8-632 2745

Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH,

Tel. (01)488 2211, Fax. (01)481 7730

Taiwan: 23-30F, 66, Chung Hsiao West Road, Sec. 1,

P.O. Box 22978, TAIPEI 10446,
Tel. (2)382 4443, Fax. (2)382 4444

Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd.,

60/14 MOO 11, Bangna - Trad Road Km. 3
Prakanong, BANGKOK 10260,
Tel. (2)399-3280 to 9, (2)398-2083, Fax. (2)398-2080

Turkey: Talatpasa Cad. No. 5, 80640 GULTEPE/ISTANBUL,

Tel. (0212)279 2770, Fax. (0212)269 3094

United Kingdom: Philips Semiconductors Limited, P.O. Box 65,

Philips House, Torrington Place, LONDON, WC1E 7HD,
Tel. (071)436 41 44, Fax. (071)323 03 42

United States: INTEGRATED CIRCUITS:

811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. (800)234-7381, Fax. (708)296-8556
DISCRETE SEMICONDUCTORS: 2001 West Blue Heron Blvd.,

P.O. Box 10330, RIVIERA BEACH, FLORIDA 33404,
Tel. (800)447-3762 and (407)881-3200, Fax. (407)881-3300

Uruguay: Coronel Mora 433, MONTEVIDEO,

Tel. (02)70-4044, Fax. (02)92 0601

For all other countries apply to: Philips Semiconductors,
International Marketing and Sales, Building BAF-1,
P.O. Box 218, 5600 MD, EINDHOVEN, The Netherlands,
Telex 35000 phtcnl, Fax. +31-40-724825

SCD30

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