MLX90254 Datasheet, PDF (1/9 Pages) Melexis Microelectronic Systems – Differential Dynamic Hall Effect Sensor

MLX90254
Differential Dynamic Hall Effect Sensor
Features and Benefits
Differential hall sensor
Low consumption
Excellent repeatability performance
Large airgap range
Large supply voltage range
Distance between Hall plates : 2.25 mm
Applications
Crankshaft sensor
Camshaft sensor
ABS sensor
Gear tooth sensor
Speed sensor
Ordering Information
Part No.
MLX90254
Temperature Suffix
L (-40°C to 150°C)
1. Functional Diagram
2
Voltage
Regulator
4
S . ( B1 - B2 )
Filter
Filter
3
Pin 1 – Not used
Pin 2 – Vdd (Supply)
Pin 3 – Vss (Ground)
Pin 4 - Output
Package Code
VA (4 leads)
2. Description
The MLX90254 is a Differential Dynamic Hall
Effect Sensor which has been developed for
automotive crankshaft and ABS (anti-lock brake
system) applications. The IC, combined with a
magnet placed at his back, offers speed and
position sensing of ferromagnetic tooth-wheels
in dynamic operation (non zero speed). Its low
hysteresis enables it to operate over a wide
range of air gaps from -40°C to 150°C.
The use of two Hall cells makes the operation
sensitive to a rotation of the IC around its normal
axis.
The output structure is an Open-Drain NMOS
transistor with a capability of 25 mA under 24V
and protected against short-circuits. The IC is
packaged in 4-SIP VA.
3901090254
Rev. 005
Page 1 of 9
Datasheet
Jun/04