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MLX90224
Dual Hall Effect Latch
Description
Applications
Documents
Environmental
FAQ
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MLX90224 General Description
The MLX90224 series are dual Hall effect latches. It includes two Hall effect latch functions of which typical thresholds are +/- 2.0 mT. In each latch, 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 MLX90224 A output transistor will be
latched 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 latched off (BRP) in the presence of a
North field. Spacing on the plates is 1.85mm. The MLX90224 B series are designed for direction detection with a high speed chopper which provides 15ms delay.
MLX90224 Features and Benefits
Chopper Stabilized Amplifier Stage
CMOS for Optimum Stability, Quality and Cost
Dual Output 4.5V to 26V Operation
Phase/Direction Detection (B)
MLX90224 Related Products
Part Number
Description
MLX92251
Dual Hall Effect Latch with Speed & Direction - Medium Sensitivity
MLX90224 Applications
Application Note
File Type
Size
Revision
Date
Action
Hall Applications Guide
PDF
498.0 KB
10/25/2005
MLX90224 Documentation
DataSheet
File Type
Size
Revision
Date
Action
MLX90224_Rev005 Datasheet
PDF
244.0 KB
005
How It Works
File Type
Size
Revision
Date
Action
Virtual Hall Effect Demoboard
SWF
164.0 KB
12/9/2002
What is the Hall Effect?
SWF
16.8 KB
1
3/15/2007
Reference
File Type
Size
Revision
Date
Action
BLDC Fan Motor Driver Quick Reference
PDF
1.7 MB
004
10/4/2011
MLX90224 Tools
MLX90224 Environmental Information
Environmental Information
File Type
Size
Revision
Date
Action
Package Material Declaration - VA MP190 LF - S3
PDF
104.8 KB
7.0
1/25/2012
RoHS Compliance Declaration MLX90224
PDF
37.4 KB
1.0
11/3/2009
This text will be replaced
MLX90224 In The Press
MLX90224 Frequently asked Questions
Hall Sensor application
Answer
In substituting for a potentiometer the analaog products to consider include the MLX90215, 90251 or 90242. Other products to consider from our sister company, Sentron, would be the 2SA-10. All of these devices require some permanent magnet field source to drive the output through the desired range for the desired mechanical displacement. See our Hall effect applications guide for more details. An encoder with digital outputs can be realized with a simple Hall effect digital switch or latch like the US188x,288x, 588x or even the MLX90224. All of these devices will require an appropriate multipole ring magnet to create the multiple pole transitions per revolution needed to implement an encoder function. There are also some ideas on this in the Hall applicaitons guide at www.melexis.com
MLX90224 Rth
Question
Suppose I have an ambient temp of 140 degrees Celcius and the current is 5 mA typ @ 5 V, an additional 25 mW is dissipated. What is the thermal resistance of the MLX90224 package, so that I can calculate the junction temp?
Answer
The thermal resistance of the VA package (the one used for the MLX90224) is 200K/W.
MLX90224
Question
We have an idea to use mlx90224 in our speed sensor. Pls clarify the op.temperature which is given as -40 to 85 c at one point and as -40 to 125 c as one spec. Also pls suggest the general design points (v low, v high ,pullup resistor value selection )to be considered if a hall sensor should be used as open collector type output.
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