MLX90224EVA Просмотр технического описания (PDF) - Melexis Microelectronic Systems

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MLX90224EVA

Dual Hall Effect Switch

Melexis Microelectronic Systems  

MLX90224

Dual Hall Effect Switch

Features and Benefits

Chopper Stabilized Amplifier Stage

CMOS for Optimum Stability, Quality and Cost

Dual Output

5V to 24V Operation

Phase/Direction Detection (option code B)

Applications

Direction Detector

Speed Sensor

Shaft Encoding

Position Sensing

Ordering Information

Part No.

MLX90224

MLX90224

Temperature Suffix

E (-40°C to 85°C)

E (-40°C to 85°C)

Package Code

VA

VA

Option code

A

B

1. Functional Diagram

1

Voltage

Regulator

Replaced with Logic for

MLX90224 B

2

Chopper

4

Chopper

3

Pin 1

Pin 2

Pin 3

Pin 4

MLX90224EVA-A

VDD

Switch Plate 1

GND

Switch Plate 2

MLX90224EVA-B

VDD

Speed

GND

Direction

2. Description

The MLX90224 series are dual Hall effect

switches. It includes two Hall effect switch

functions of which typical thresholds are +/- 2.0

mT. In each switch, the magnetic flux detection

is performed by a switched silicon Hall plate.

The BOP and BRP are temperature-compensated

and give a sensitivity temperature coefficient of

500 ppm/oC to compensate popular magnets.

The MLX90224LVAA output transistor will be

“switched on” (BOP) in the presence of a

sufficiently strong South pole magnetic field

facing the marked side of the package. Similarly,

the output will be “switched off” (BRP) in the

presence of a North field. Spacing on the plates

is 1.85mm.

The MLX90224LVAB serie is designed for

direction detection with a high speed chopper.

The output structure is an Open-Drain NMOS

transistor with a capability of 25 mA.

3901090224

Rev. 005

Page 1 of 10

Data Sheet

July/03

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