www.ams.com revision 1.1 / 02/04/13 page 1 / 4 magnet specification as5000 - ma 075 h - 1 1. general description the as5000 - ma075 h - 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) 3. magnet ic specification type min. max. unit material ndfeb - property grade n45sh - remanence br 13.2 13.8 kg coercive force b hc 12.6 - k o e intrinsic coercive force i hc 20 - k o e max energy product (bh) max. 43 46 mgoe working temperature - 1 5 0 c d = 0 . 7 5 1 . 5 0 d i m e n s i o n s i n m i l l i m e t e r s s u r f a c e f i n i s h : 1 . 6 m
www.ams.com revision 1.1 / 02/04/13 page 2 / 4 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 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 +/ - 150m stroke) . the 10 - bit output register d[9..0] output = field (mt) * (511/ 12.5 ) + 5 11 max. travel distance td max = 0.295 mm (x max = 0.295 mm) bmax = 12. 5mt ? x = - 0.295 mm (= - x max ) field (mt) = - 1 2 . 5mt output = 0 ? x = 0mm field (mt) = 0mt output = 511 ? x = + 0.295 mm (= +x max ) field (mt) = + 1 2 . 5mt output = 1023 dynamic range of output over 0.295 mm: delta = 1023 C 0 = 1023 lsb resolution = td max / delta = 0.59 mm / 1024 = 0 . 58 m/lsb 1 2 . 5 m t - 1 2 . 5 m t a s 5 5 1 0 0 . 2 9 5 m m 0 l i n e a r r a n g e m a g n e t i c f i e l d ( m t ) m e a s u r e d o n a s 5 5 1 0 s u r f a c e w i t h 0 . 2 8 5 m m a i r g a p 1 0 - b i t r e s u l t , o u t p u t r e g i s t e r a s 5 5 1 0 1 0 2 3 0 x ( m a g n e t p o s i t i o n ) - x m a x + x m a x 0 . 2 9 5 m m n s 5 1 1
www.ams.com revision 1.1 / 02/04/13 page 3 / 4 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 or der to keep the maximum magnetic field s trength 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 i nformation is available online and the contact information is listed in the following. new favor industry co., ltd. taiwan tel: + 886 - 2 - 2577 - 5038 o verseas customer : marketing@newfavor.com customer located in taiwan : sales - dept@newfavor.com http://www.newfavor.com
www.ams.com revision 1.1 / 02/04/13 page 4 / 4 copyrights copyright ? 201 3 , 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 compani es 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, statu tory, 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 requi rements, 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 belie ved 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, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. no obligation or liability to recipient or any third party shall arise or flow out of ams ag rendering of technical or other services. 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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