semiconductors description the zmy20m is an extremely sensitive magnetic sensor employing the magneto-resistive effect of thin film permalloy. it allows the measurement of magnetic fields or the detection of magnetic parts. the highly sensitive and small size magnetoresistive sensors consist of chip covered with thin film permalloy stripes. these stripes form a wheatstone bridge, whose output voltage is proportional to the magnetic field component hy. the required perpendicular field hx which is necessary to stabilize sensor operation, is created by an internal permanent magnet. features ? package: sot223 ? supply voltage 12v ? internal magnet for creation of auxiliary field hx ? available on 12mm tape applications ? linear position measurement ? angular position measurement ? navigation (electronic compass) ? revolution measurement device marking ? zmy20m zmy20m issue 2 - january 2004 magnetic field sensor with internal magnet 1 device reel size tape width quantity per reel ZMY20MTA 7? 12mm 1,000 zmy20mtc 13? 12mm 4,000 ordering information
zmy20m semiconductors issue 2 - january 2004 2 parameter symbol limit unit supply voltage v b 12 v total power dissipation p tot 120 mw operating temperature range t amb -25 to +125 c storage temperature range t stg -25 to +125 c absolute maximum ratings parameter symbol min. typ. max. unit c onditions bridge resistance r br 1.2 1.7 2.2 k output voltage range v o /v b 12 18 24 mv/v auxiliary field hx - 2 - ka/m disturbing field hd - - 30 ka/m open circuit sensitivity s 3.0 5.5 7.0 (mv/v)/ (ka/m) no disturbing field h d allowed v b = const. hysteresis of output voltage v oh /v b --50 v/v hy 2ka/m offset voltage v off /v b -1.5 - +1.5 mv/v operating frequency f max 0 - 1 mhz temperature coefficient of offset voltages tcv off -3 - +3 ( v/v)/k t amb = -25 to +125c temperature coefficient of bridge resistance tcr br 0.25 0.3 0.35 %/k t amb = -25 to +125c temperature coefficient of open circuit sensitivity v b =5v tcs v -0.25 -0.3 -0.35 %/k t amb = -25 to +125c temperature coefficient of open circuit sensitivity i b = 3ma tcs i - 0.05 - %/k t amb = -25 to +125c electrical characteristics (at t amb = 25c unless otherwise stated)
zmy20m semiconductors issue 2 - january 2004 3
zmy20m semiconductors 4 issue 2 - january 2004 europe zetex gmbh streitfeldstra?e 19 d-81673 mnchen germany telefon: (49) 89 45 49 49 0 fax: (49) 89 45 49 49 49 europe.sales@zetex.com americas zetex inc 700 veterans memorial hwy hauppauge, ny 11788 usa telephone: (1) 631 360 2222 fax: (1) 631 360 8222 usa.sales@zetex.com asia pacific zetex (asia) ltd 3701-04 metroplaza tower 1 hing fong road, kwai fong hong kong telephone: (852) 26100 611 fax: (852) 24250 494 asia.sales@zetex.com corporate headquaters zetex plc fields new road, chadderton oldham, ol9 8np united kingdom telephone (44) 161 622 4444 fax: (44) 161 622 4446 hq@zetex.com these offices are supported by agents and distributors in major countries world-wide. this publication is issued to provide outline information only which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. the company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service. for the latest product information, log on to www.zetex.com ? zetex plc 2003 controlling dimensions are in millimeters. approximate conversions are given in inches package outline dim millimeters inches dim millimeters inches min max min max min max min max a - 1.80 - 0.071 e 2.30 bsc 0.0905 bsc a1 0.02 0.10 0.0008 0.004 e1 4.60 bsc 0.181 bsc b 0.66 0.84 0.026 0.033 e 6.70 7.30 0.264 0.287 b2 2.90 3.10 0.114 0.122 e1 3.30 3.70 0.130 0.146 c 0.23 0.33 0.009 0.013 l 0.90 - 0.355 - d 6.30 6.70 0.248 0.264 - ---- package dimensions
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