Datasheet KMI15-2 Datasheet (Philips)

DATA SH EET

Product specification
Supersedes data of 1996 Dec 05
File under Discrete Semiconductors, SC17

1998 Mar 25

DISCRETE SEMICONDUCTORS

KMI15/2

Integrated rotational speed sensor

dbook, halfpage

M3D281

1998 Mar 25 2

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

FEATURES

• Digital current output signal

• Zero speed capability

• Wide air gap

• Wide temperature range

• Insensitive to vibration

• EMC resistant.

DESCRIPTION

The KMI15/2 sensor detects (rotational) speed and
reference mark detection of magnetized targets

(1)

.
The sensor consists of a magnetoresistive sensor
element, a signal conditioning integrated circuit in bipolar
technology and a magnetized ferrite magnet.
The frequency of the digital current output signal is
proportional to the rotational speed of a gear wheel.

(1) The sensor contains a customized integrated circuit. Usage in

hydraulic brake systems and in systems with active brake
control is forbidden.

CAUTION

Do not press two or more products together against their
magnetic forces.

PINNING

PIN DESCRIPTION

1V

CC

2V−

Fig.1 Simplified outline; (SOT453A).

handbook, halfpage

MBH780

12

QUICK REFERENCE DATA

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

V

CC

DC supply voltage 0.5 12 16 V

I

CC (low)

current output signal low − 7 − mA

I

CC (high)

current output signal high − 14 − mA

f

t

operating frequency 0 − 25000 Hz

T

amb

ambient operating temperature −40 − +85 °C

1998 Mar 25 3

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

LIMITING VALUES

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

CHARACTERISTICS

T

amb

=25°C; VCC=12V; ft= 2 kHz; test circuit: see Fig.7; RL=115Ω.

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

CC

DC supply voltage T

amb

= −40 to +85 °C; RL=115Ω 0.5 16 V

T

stg

storage temperature −40 +150 °C

T

amb

operating ambient temperature −40 +85 °C

T

sld

soldering temperature t ≤ 10 s − 260 °C
output short-circuit duration to GND continuous

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

I

CC (low)

current output signal low see Fig.6 5.6 7.0 8.4 mA

I

CC (high)

current output signal high see Fig.6 11.2 14.0 16.8 mA

t

r

output signal rise time CL= 100 pF; 10 to 90% value − 0.5 −µs

t

f

output signal fall time CL= 100 pF; 10 to 90% value − 0.7 −µs

t

d

switching delay time between stimulation pulse (generated by

a coil) and output signal

− 1 −µs

f

t

operating frequency for both rotation directions 0 − 25000 Hz

Hs

LH

magnetic switching field
strength

0.05 0.3 0.8 kA/m

Hs

HL

magnetic switching field
strength

0.05 0.3 0.8 kA/m

Hs magnetic switching

hysteresis

0.15 − 1.6 kA/m

1998 Mar 25 4

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

FUNCTIONAL DESCRIPTION

The KMI15/2 sensor is sensitive to magnetic fields.
The functional principle is shown in Fig.3. The field lines of
a magnetized target are shown in Fig.3 as a straight target
(it could also be circular e.g. for rotational speed
measurement). If a sensor KMI15/2 is moved as shown in
this field, either of the magnetic field components HsHL or
HsLH is dominant, and forces the sensor to switch to either
the high current (14 mA) or to the low current (7 mA).
Oscillation of the sensor output signal is avoided by the
implementation of a hysteresis into the signal conditioning
electronic.

The MR sensor is stabilized by a permanent magnet
applying a continuous magnetic field of ≥6 kA/m to the
sensor. If the magnetic field given by the magnetized
target errors like frequency doubling might occur.
The magnetoresistive sensor element signal is amplified,
temperature compensated and forwarded to a
Schmitt-trigger in the conditioning integrated circuit
(Figs 4 and 5). The digital output signal levels (Fig.6) are
independent of the magnetic field condition.
A (2-wire) output current enables safe transfer of the
sensor signal to the detecting circuit (Fig.7).
The integrated circuit housing is separated from the
sensor element housing to optimize the sensor behaviour
at high temperatures.

Fig.2 Component detail of the KMI15/2.

handbook, halfpage

y

z

xx

IC

sensor

magnet with
direction of
magnetization

MBH777

1998 Mar 25 5

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

Fig.3 Functional principle of KMI15/2.

handbook, full pagewidth

N

14 mA

output
signal

7 mA

moving direction of the sensor

HS

HL

HS

LH

magnetized

target

S

MGD808

SNNSSNNS

Fig.4 Block diagram.

handbook, full pagewidth

SCHMITT
TRIGGER

AMPLIFIERSENSOR

SWITCHABLE

CURRENT

SOURCE

CONSTANT

CURRENT

SOURCE

VOLTAGE CONTROL

V

CC

V

MRA958

1998 Mar 25 6

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

Fig.5 Simplified circuit diagram.

handbook, full pagewidth

power supply

GAP

V

ref

V

CC

V

Schmitt­trigger

pre­amplifier

EMC

FILTER

sensor

MRA959

switchable

current source

constant
current source

Fig.6 Output signal as a function of time.

handbook, halfpage

I

CC

t

T

t

p

MRA960

14 mA

7 mA

δ

t

p

T

--- -

100%×=

Fig.7 Test and application circuit.

MRA961

V

C

R

SENSOR

GND

CC

I

CC

L

L

V

1998 Mar 25 7

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

PACKAGE OUTLINE

UNIT

b

p

c QL

2

L

1

v

REFERENCES

OUTLINE
VERSION

EUROPEAN

PROJECTION

ISSUE DATE

IEC JEDEC EIAJ

mm

1.7

1.4

0.8

0.7

b

p1

1.5

1.4

5.7

5.5

4.1

3.9

0.3

0.24

1.2

0.9

3.9

3.5

M

1

3.9

3.7

M

2

2.1

1.9

M

3

0.9

0.75

L

7.55

7.25

D

(1)

D

1

(1)

4.5

4.3

E

(1)

5.7

5.5

4.6

4.4

E

1

(1)

18.2

17.8

H

E

5.6

5.5

H

E1

K

max.

1.67

e

0.25

0.75

0.65

DIMENSIONS (mm are the original dimensions)

SOT453A

96-11-12
97-02-28

0 2.5 5 mm

scale

A

Plastic single-ended combined package; magnetoresistive sensor element; bipolar IC;
magnetized ferrite magnet (3.8 x 2.0 x 0.8 mm); 2 in-line leads SOT453A

e

E

E

1

H

E1

L

1

D

L

b

p1

D

1

H

E

M

1

M

3

K

Note

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

L

2

b

p

c

(+)(−)

vM

AB

vM

AB

Q

A

M

2

B

A

1998 Mar 25 8

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

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.

1998 Mar 25 9

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

NOTES

1998 Mar 25 10

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

NOTES

1998 Mar 25 11

Philips Semiconductors Product specification

Integrated rotational speed sensor KMI15/2

NOTES

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

Philips Semiconductors – a worldwide company

© Philips Electronics N.V. 1996 SCA52
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.

Netherlands: Postbus 90050, 5600PB 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: Rua do Rocio 220, 5th floor, Suite 51,
04552-903 São Paulo, 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 TAIWAN Ltd., 23-30F, 66,
Chung Hsiao West Road, Sec. 1, P.O. Box 22978,
TAIPEI 100, 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, Marketing & Sales Communications,
Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. [phone]

Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,

Tel. [phone], Fax. [phone]
Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213,

Tel. [phone], Fax. [phone]
Belarus: Hotel Minsk Business Center, Bld. 3, r. 1211, Volodarski Str. 6,

220050 MINSK, Tel. [phone], Fax. [phone]

Belgium: see The Netherlands
Brazil: seeSouth America
Bulgaria: Philips Bulgaria Ltd., Energoproject, 15thfloor,

51 James Bourchier Blvd., 1407 SOFIA,
Tel. [phone], Fax. [phone]

Canada: PHILIPS SEMICONDUCTORS/COMPONENTS,
Tel. [phone]

China/Hong Kong: 501 Hong Kong Industrial Technology Centre,
72 Tat Chee Avenue, Kowloon Tong, HONG KONG,
Tel. [phone], Fax. [phone]

Colombia: see South America
Czech Republic: see Austria
Denmark: Prags Boulevard 80, PB 1919, DK-2300 COPENHAGEN S,

Tel. [phone], Fax. [phone]
Finland: Sinikalliontie 3, FIN-02630 ESPOO,

Tel. [phone], Fax. [phone]/xxx
France: 4 Rue du Port-aux-Vins, BP317, 92156 SURESNES Cedex,

Tel. [phone], Fax. [phone]
Germany: Hammerbrookstraße 69, D-20097 HAMBURG,

Tel. [phone], Fax. [phone]
Greece: No. 15, 25th March Street, GR 17778 TAVROS/ATHENS,

Tel. [phone], Fax. [phone]

Hungary: seeAustria
India: Philips INDIA Ltd, Shivsagar Estate, A Block, Dr. Annie Besant Rd.

Worli, MUMBAI 400 018, Tel. [phone], Fax. [phone]

Indonesia: see Singapore
Ireland: Newstead, Clonskeagh, DUBLIN 14,

Tel. [phone], Fax. [phone]
Israel: RAPAC Electronics, 7 Kehilat Saloniki St, TEL AVIV 61180,

Tel. [phone], Fax. [phone]
Italy: PHILIPS SEMICONDUCTORS, Piazza IV Novembre 3,

20124 MILANO, Tel. [phone], Fax. [phone]
Japan: Philips Bldg 13-37, Kohnan 2-chome, Minato-ku, TOKYO 108,

Tel. [phone], Fax. [phone]
Korea: Philips House, 260-199 Itaewon-dong, Yongsan-ku, SEOUL,

Tel. [phone], Fax. [phone]
Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA, SELANGOR,

Tel. [phone], Fax. [phone]
Mexico: 5900 Gateway East, Suite 200, EL PASO, TEXAS 79905,

Tel. [phone]
Middle East: see Italy

Printed in The Netherlands 115106/1200/02/pp12 Date of release: 1998 Mar 25 Document order number: 9397 750 03603