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Magnet Specification
AS5000-MA075H-1
1. General Description
The AS5000-MA075H-1 is an axial magnet used with the AS5510 linear magnetic position sensor,
in order to measure small linear displacements.
The magnet is mounted on the top of the AS5510. The typical arrangement is shown in Figure 1.
Material: NdFeB sintered magnet, Ni-coated
2. Dimensional Specification (mm)
d=0.75
Dimensions in millimeters
Surface finish: 1.6µm
1.50
3. Magnetic Specification
Type
Min.
Material
NdFeB
-
Property Grade
N45SH
-
Remanence Br
13.2
13.8
KG
Coercive Force bHc
12.6
-
KOe
Intrinsic Coercive Force iHc
20
-
KOe
Max Energy Product (BH) max.
43
46
MGOe
Working Temperature
-
150
°C
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Max.
Unit
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4. Magnetic Field Representation
Below in Figure 1:Figure 1, an illustration of the magnet and the AS5510 is shown. The curve plot
below the sensor chip shows the ideal linear range of the magnet seen by the AS5510.
Figure 1:
Linear Position Sensor AS5510 + Magnet
S
N
AS5510
0.295mm
0.295mm
Magnetic field (mT)
measured on AS5510 surface
with 0.285mm airgap
10-bit result,
output register AS5510
12.5mT
1023
Lin
-Xmax
ea
rr
511 0
an
ge
+Xmax
X (Magnet position)
-12.5mT
0
Example:
The airgap for the example shown below is 0.285mm typ. The sensitivity setting of the AS5510 for
this example is +/- 12.5mT with a Non Linearity Error of < 2 % (for +/- 150µm stroke).
The 10-bit output register D[9..0] OUTPUT = Field(mT) * (511/12.5) + 511
Max. Travel Distance TDmax = ±0.295mm (Xmax = 0.295mm)
Bmax = 12.5mT
 X = -0.295mm (= -Xmax)
Field(mT) = -12.5mT
OUTPUT = 0
 X = 0mm
Field(mT) = 0mT
OUTPUT = 511
 X = +0.295mm (= +Xmax)
Field(mT) = +12.5mT
OUTPUT = 1023
Dynamic range of OUTPUT over ±0.295mm: DELTA = 1023 – 0 = 1023 LSB
Resolution = TDmax / DELTA = 0.59mm / 1024 = 0.58µm/LSB
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In order to keep the best resolution of the system, it is recommended to adapt the sensitivity as
close as the Bmax of the magnet, with Bmax < Sensitivity to avoid the saturation of the output
value.
If a magnet holder is used, this one ferromagnetic in order to keep the maximum magnetic field
strength and maximum linearity. Materials as brass, copper, aluminium, stainless steel are the best
choices to make this part.
5. Magnet Supplier Information
The magnet supplier for this magnet is New Favor Industry Co., LTD. Taiwan. Additional
information is available online and the contact information is listed in the following.
New Favor Industry Co., LTD. Taiwan
TEL: +886-2-2577-5038
Overseas customer: marketing@newfavor.com
Customer located in Taiwan: sales-dept@newfavor.com
http://www.newfavor.com
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Copyrights
Copyright © 2013, ams AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe.
Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted,
merged, translated, stored, or used without the prior written consent of the copyright owner.
All products and companies mentioned are trademarks or registered trademarks of their respective
companies.
Disclaimer
Devices sold by ams AG are covered by the warranty and patent indemnification provisions
appearing in its Term of Sale. ams AG makes no warranty, express, statutory, implied, or by
description regarding the information set forth herein or regarding the freedom of the described
devices from patent infringement. ams AG reserves the right to change specifications and prices at
any time and without notice. Therefore, prior to designing this product into a system, it is necessary
to check with ams AG for current information. This product is intended for use in normal commercial
applications. Applications requiring extended temperature range, unusual environmental
requirements, or high reliability applications, such as military, medical life-support or life-sustaining
equipment are specifically not recommended without additional processing by ams AG for each
application.
The information furnished here by ams AG is believed to be correct and accurate. However, ams
AG shall not be liable to recipient or any third party for any damages, including but not limited to
personal injury, property damage, loss of profits, loss of use, interruption of business or indirect,
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furnishing, performance or use of the technical data herein. No obligation or liability to recipient or
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Contact Information
Headquarters
ams AG
A-8141 Schloss Premstaetten, Austria
Tel: +43 3136 500 32110
Email: info@ams.com
For Sales Offices, Distributors and Representatives, please visit:
http://www.ams.com/contact
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