DATA SHEET MR Sensor MRSS31U Micro power Built-in IC ultra-minimum MR sensor FEATURES and High-sensitivity(2mT(typ)) (suited for battery-operation) 0.3 +0.1 -0.05 *Ultra-small size 0.15 (easily manufacture) 0.4 ±0.1 1 .6 Vcc *Operating with independent pole Out 0.6 5 0.65 *Superior Temperature stability *Lead free goods 2.0± 0.2 Ma x0.8 2.Fundamental Operation 2-1.Direction of Magnetic Field 2-2.Circuit Block Ｖｃｃ SWITCH Ｒ1 Ｒ2 SAMPLING LOGIC LATCH Op-Amp Ｒ3 ＯＵＴ MOS Operation Ｒ4 ＧＮＤ R1 ∼R4 ：MR Elements 2-3.Performance Characteristics (25±3ºC) When power switch is ON When magnetic field is applied When magnetic field is applied +0.1 -0.05 0 ∼0.05 Gnd 2 .1 ±0.1 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 0.25±0.1 1.Dimension (Unit:mm) *Micro power (15µW(typ):Vcc=3V) 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 DATA SHEET MR Sensor MRSS31U 3.Performance 3-1.Operating Conditions Recommended (Ta = 25±3ºC unless otherwise specified) Item Output Condition Min Std Max Unit Supply Voltage - - 2.5 3.0 3.7 V Supply Current - Vcc=3V - 5 - µA Ambient Temperature - - -20 25 80 ºC 2.7 - - V - - 0.3 V - 2.0 (1.6) 2.5 (2.0) mT(*1 0.5 (0.4) - - VOH Output Voltage VOL Operating Magnetic Field Vcc=3V Iout=2mA VCC=3V Iout=-2mA Hi-level output Hon Lo-level output Hoff *1) *2) (kA/m) (*2 1 [mT](SI) = 10 [G] (CGS) ( ) = [kA/m](SI) 3-2.Absolute Maximum Ratings (Ta = 25±3ºC unless otherwise specified) Item Condition Specifications Unit Supply Voltage - 5.0 V Storage Temperature - -40 ~ +125 ºC The products and product specifications described in this material are subject to change without notice for reasons of modification or improvement. DATA SHEET MR Sensor MRSS31U 4. Recommended Mount Pad 1.9 0.8 0.6 0.65 0.65 1.3 ( 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 © 2005 NEC Corporation