MLX90254

Differential Dynamic Hall Effect Sensor

3901090254

Page 2 of 10

Datasheet

Rev. 006

Feb/12

1. Functional Diagram

2

S . ( B1 - B2 )

Filter

Filter

4

Voltage

Regulator

3

Pin 1 – Not used

Pin 2 – Vdd (Supply)

Pin 3 – Vss (Ground)

Pin 4 - Output

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.