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| ZMZ20 MAGNETIC FIELD SENSORS DESCRIPTION The ZMZ20 is an extremely sensitive magnetic field sensor in a 4 pin E-Line package employing the magneto-resistive effects of thin film Permalloy. It allows the measurement of magnetic fields or the detection of metallic parts. The sensor consists of a chip covered with Permalloy stripes which form a Wheatstone bridge, whose output voltage is proportional to the magnetic field component Hy. A perpendicular field Hx is necessary to suppress the hysteresis and this can be provided by using a small permanent magnet. FEATURES * Output voltage proportional to magnetic field Hy * Adjustment of sensitivity and suppression of hysteresis by the auxiliary magnetic field Hx effective E-LINE * Magnetic fields vertical to the chip level are not APPLICATIONS * Linear position sensors for process control, door * Scalar measurement for compassing * Automotive - door switches, engine position and speed sensing interlocks, proximity detectors, machine tool sensing * Metering of fluids by sensing rotation of impeller * Traffic counting and vehicle-type sensing * Measurement of current in a conductor without connection PINOUT ORDERING INFORMATION DEVICE ZMZ20 BOX Bulk in box (2,000 components per box) DEVICE MARKING * M20 SIDE VIEW ISSUE 2 - JANUARY 2004 1 SEMICONDUCTORS ZMZ20 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply voltage Total power dissipation Operating temperature range SYMBOL VB P TOT T amb LIMIT 12 120 -40 to +150 UNIT V mW C ELECTRICAL CHARACTERISTICS (at Tamb = 25C and Hx=3kA/m unless otherwise stated) PARAMETER Bridge resistance Output voltage range Open circuit sensitivity Hysteresis of output voltage Offset voltage Operating frequency Temperature coefficient of offset voltages Temperature coefficient of bridge resistance Temperature coefficient of open circuit sensitivity V B =5V Temperature coefficient of open circuit sensitivity I B =3mA TCS I -0.1 %/K Tamb = -25 to +125C SYMBO R br V O /V B S V OH /V B V off /V B f max TCV off TCR br TCS V MIN. 1.2 16 3.7 -1.0 0 -3 0.25 -0.25 TYP. 1.7 20 4.7 0.3 -0.3 0.35 -0.35 %/K %/K MAX. 2.2 24 5.7 50 +1.0 1 +3 UNIT k mV/V (mV/V)/(kA/m) No disturbing field H d allowed V/V mV/V MHz (V/V)/K T amb = -25 to +125C T amb = -25 to +125C T amb = -25 to +125C Hy = 2kA/m CONDITIONS ISSUE 2 - JANUARY 2004 SEMICONDUCTORS 2 ZMZ20 Application 1 (digital output) +Ub 22k 1M 4 10k 8 3 ZMZ20 1 10k 10k 10k 22k 10k GND 6 U1B 7 TL072 3+ 24 U1A 1 TL072 out 10k 5+ 2 Application 2 (analog output) +Ub 5 + U1B 7 6TL074 R4 10k R1 100k R6 30k 4 R3 10k 3 1 ZMZ20 13 - U1D 14 12 + TL074 2 9 10 + U1C TL074 8 R2 100k R5 10k R7 30k 4 3 + U1A 1 2TL074 1 1 Uo GND -Ub ISSUE 2 - JANUARY 2004 3 SEMICONDUCTORS ZMZ20 ISSUE 2 - JANUARY 2004 SEMICONDUCTORS 4 ZMZ20 ISSUE 2 - JANUARY 2004 5 SEMICONDUCTORS ZMZ20 PACKAGE OUTLINE D R EA B G G G H C F B1 L B Controlling dimensions are in millimeters. Approximate conversions are given in inches PACKAGE DIMENSIONS Millimeters DIM Min A B B1 C D E F G 0.8 0.35 0.45 4.0 3.8 2.4 1.2 1.25 Max 1.0 0.48 0.60 4.4 4.2 2.8 Min 0.032 0.014 0.018 0.158 0.150 0.094 0.047 0.049 Max 0.039 0.019 0.024 0.173 0.165 0.110 Inches (c) Zetex plc 2003 Europe Zetex GmbH Streitfeldstrae 19 D-81673 Munchen 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 ISSUE 2 - JANUARY 2004 SEMICONDUCTORS 6 |
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