Micro power Built-in IC ultra-minimum MR sensor
DATA SHEET MRSS31U Micro power Built-in IC ultra-minimum MR sensor
FEATURES *Micro power (15µW(typ):Vcc=3V) and High-sen...
Description
DATA SHEET MRSS31U Micro power Built-in IC ultra-minimum MR sensor
FEATURES *Micro power (15µW(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‚ƒ‚ƒ
SAMPLING LOGIC LATCH
Op-Amp ‚n‚t‚s
MOS
Operation
‚q3
‚q4 ‚f‚m‚c
R1 ` R 4 F MR Elements
2-3.Performance Characteristics (25±3ºC) 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 = 25±3ºC 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
Condit...
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