KMI18/2,115 NXP Semiconductors, KMI18/2,115 Datasheet - Page 5

• Manufacturer Part Number: KMI18/2,115
• Description: SPEED SENSOR ROTATIONAL SOT477A
• Manufacturer: NXP Semiconductors
• Type: Special Purposer

Specifications of KMI18/2,115

• Sensing Range: ±400A/m
• Voltage - Supply: 4.5 V ~ 16.5 V
• Current - Supply: 10mA
• Current - Output (max): 20mA
• Output Type: Digital, Open Collector
• Features: Gear Tooth Type
• Operating Temperature: -40°C ~ 150°C
• Package / Case: SOT-477A
• Maximum Operating Temperature: + 150 C
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 934056231115; KMI18/2 T/R; KMI18/2 T/R

Philips Semiconductors
FUNCTIONAL DESCRIPTION
The KMI18/2 is sensitive to the rotation of an active target
wheel with magnetic reference marks. The functional
principle is shown in Fig.8. Because of the sensor layout
and setup of the measuring system, only movements of
reference marks in the y-direction will be sensed
(coordinate system see Fig.2).
The electrical output signal of the sensor is amplified,
temperature compensated and applied to a Schmitt trigger
in the signal conditioning circuit (see Fig.9). An additional
housing separates the conditioning circuitry from the
magnetorestive sensor element, thereby ensuring optimal
sensor performance at high temperatures.
The signal level of the digital output is independent from
the sensing distance within the measuring range. Its
frequency equals that of the reference marks on the target
wheels
An open collector voltage interface ensures accurate
transmission (three wires) of the digital sensor signal to the
subsequent signal conditioning electronics.
(1) See relevant application notes for specific target wheel data.
2000 Sep 05
Integrated rotational speed sensor
(1)
.
5
handbook, halfpage
Fig.2 Component detail and coordinate system.
y
1
2
x
3
magnet with
direction of
magnetization
sensor
IC
Preliminary specification
MBL227
KMI18/2
x
z