2000 Sep 05

2

Philips Semiconductors

Product specification

Rotational speed sensor

KMI15/4

FEATURES

• Digital current output signal

• Zero speed capability

• Wide air gap

• Wide temperature range

• Vibration insensitive

• EMC resistant.

DESCRIPTION

The KMI15/4 sensor detects rotational speed of ferrous

The sensor consists of a magnetoresistive sensor

element, a signal conditioning integrated circuit in bipolar

technology and a ferrite magnet. The frequency of the

digital current output signal is proportional to the rotational

speed of a gear wheel.

PINNING

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

hydraulic brake systems and in systems with active brake

control is forbidden. For all other applications, higher

temperature versions of up to 150

request.

CAUTION

Do not press two or more products together against their

magnetic forces.

PIN

DESCRIPTION

2V

−

Fig.1 Simplified outline (SOT453C).

handbook, halfpage

MBH782

12

QUICK REFERENCE DATA

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

DC supply voltage

−

12

−

V

ambient operating temperature

−40

−

+85

°C

current output signal low

−

7

−

mA

current output signal high

−

14

−

mA

operating tooth frequency

0

−

25000

Hz

d

sensing distance

0 to 2.0

0 to 2.3

−

mm