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| DATA SHEET MRSS31U Micro power Built-in IC ultra-minimum MR sensor FEATURES *Micro power (15W(typ):Vcc=3V) and High-sensitivity(2mT(typ)) (suited for battery-operation) *Ultra-small size MR(Magneto-resistance)sensor * Volume and mounting area are 50% smaller than MRSS22L. * Height is about 4mm lower than MRSS22L. *Operating in one way magnetic field *Operating with independent pole (easily manufacture) *Superior Temperature stability *Lead free goods 2.Fundamental Operation 2-1.Direction of Magnetic Field 2-2.Circuit Block SWITCH q1 q2 2.0 * } 0.2 0.3 +0.1 -0.05 MR Sensor 1.Dimension (Unit:mm) 0.25 * } 0 .1 0.15 +0.1 -0.05 Gnd 2 .1 * } 0 .1 0 * 0 .05 1 .6 Vcc Out 0.6 5 0.65 Ma x0.8 u SAMPLING LOGIC LATCH Op-Amp nts MOS Operation q3 q4 fmc R1 * R 4 * F MR Elements 2-3.Performance Characteristics (253C) Operating require Condition H = 0 mT(Magnetic Flux Density) [0 A/m (Magnetic Field Strength)] H 2.0(Typ)mT(Magnetic Flux Density) [1.6kA/m (Magnetic Field Strength)] H 0.5 mT (Magnetic Flux Density) [0.4kA/m(Magnetic Field Strength)] Output Voltage Hi-level Lo-level Hi-level When power switch is ON When magnetic field is applied When magnetic field is applied 0.4 * } 0 .1 DATA SHEET MRSS31U 3.Performance 3-1.Operating Conditions Recommended (Ta = 253C unless otherwise specified) Item Supply Voltage Supply Current Ambient Temperature Output Voltage VOL Hi-level output Hon Lo-level output Hoff *1) *2) MR Sensor Output VOH Condition Vcc=3V Vcc=3V Iout=2mA VCC=3V Iout=-2mA Min 2.5 -20 2.7 0.5 (0.4) Std 3.0 5 25 2.0 (1.6) - Max 3.7 80 0.3 2.5 (2.0) - Unit V A C V V mT(*1 (kA/m) (*2 Operating Magnetic Field 1 [mT](SI) = 10 [G] (CGS) ( )= [kA/m](SI) 3-2.Absolute Maximum Ratings (Ta = 253C unless otherwise specified) Item Supply Voltage Storage Temperature Condition Specifications 5.0 -40 ~ +125 Unit V C The products and product specifications described in this material are subject to change without notice for reasons of modification or improvement. DATA SHEET MRSS31U MR Sensor 4. Recommended Mount Pad 0.6 0.8 0.65 1.3 0.65 1.9 ( Unit : mm) The products and product specifications described in this material are subject to change without notice for reasons of modification or improvement. NEC Corporation Fiber Optic Device Division (Shin Tamachi Building) 34-6, Shiba 5-chome, Minato-ku, Tokyo 108-0014, Japan Tel:+81-3-3798-5864 Fax:+81-3-3798-5857 http://www.sw.nec.co.jp/on/dd/en/ EWV-19-0087-01E, Feb., 2005 Copyright (c) 2005 NEC Corporation |
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