KMI15/2,115 NXP Semiconductors, KMI15/2,115 Datasheet - Page 4

• Manufacturer Part Number: KMI15/2,115
• Description: SPEED SENSOR ROTATIONAL SOT453C
• Manufacturer: NXP Semiconductors
• Type: Special Purposer

Specifications of KMI15/2,115

• Sensing Range: 0mm ~ 2.3mm
• Voltage - Supply: 5.5 V ~ 16 V
• Current - Output (max): 8.4mA
• Output Type: Digital, Open Collector
• Features: Gear Tooth Type
• Operating Temperature: -40°C ~ 85°C
• Package / Case: SOT-453C
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 934050790115; KMI15/2 T/R; KMI15/2 T/R

Philips Semiconductors
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 Hs
Hs
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.
2000 Jun 26
Integrated rotational speed sensor
LH
is dominant, and forces the sensor to switch to either
HL
or
4
handbook, halfpage
Fig.2 Component detail of the KMI15/2.
y
x
magnet with
direction of
magnetization
sensor
IC
Product specification
MBH777
KMI15/2
x
z