DM-111A View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

DM-111A

Magneto-Resistance Element

Sony Semiconductor 

Equivalent Circuit

RA

RB

1

2

3

DM-111A

H

θ

RA max

1

RA : Resistance reduces as the

RB min

magnetic field revolves.

RB : Resistance increases as the

2

3

magnetic field revolves.

Introduction

1) Power supplying pin output pin

111A

12 3

1

RA

RB

2

VCC

3

2) Sensitive direction vs. Midpoint potential

Midpoint potential

a

VCC

Hs

b

2

H

cd

b

a

e

Direction of Magnetic-

flux

Incidence

e

Sensitive

Non-sensitive

d

Direction of Magnetic-

flux

Incidence

Useful Region

c

Changes occur to the output voltage at the saturation region

of V-H curve according to the direction of magnetic flux.

These changes provide for the operation.

• With one rotation of magnetic flux, signals for 2 periods are

obtained.

—2—

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