AMR1341G datasheet(3/11 Pages) MULTIDIMENSION

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1. Functional Block Diagram

AMR134x series switches are composed of AMR

sensors and signal processing circuits. The AMR

sensor detects external magnetic field, generates an

analog voltage signal, and outputs a logical switch

level after processing by the circuit as shown in

Figure 1.

CMOS

Drive

REG

Dynamic Cancel

offset

Op_amp

Latch

Temp

Compensation

circuit

Timing Logic

OSC

Figure 1. Block diagram

2. Switching Characteristics

The Figure 2 shows the sensing direction is parallel

to the silkscreen surface of the package as shown

by the arrow.

Figure 2. Sensing direction

The output is “High”, when power is on at zero

magnetic field. B is the external magnetic field along

the sensing direction, BOPS (BOPN) is the operating

point, BRPS (BRPN) is the release point, and hysteresis

BH is define as the difference between BOPS and BRPS

(BOPN and BRPN).

The sensor outputs a high level, when the magnetic

field along the sensing axis exceeds the operate

point BOPS (BOPN), and the device outputs a low

level, when the magnetic field is reduced below the

release point BRPS (BRPN) as shown in Figure 3.

VOUT

H(S pole)

BOPS

BRPS

BRPN

BOPN

VOH

VOL

Figure 3. Switching characteristics

3. Pin Configuration

VOUT

VCC

GND

TOP VIEW

BOTTOM VIEW

Figure 4-1. Pin configuration (DFN3L)

VCC

VOUT

GND

TOP VIEW

BOTTOM VIEW

Figure 4-2. Pin configuration (LGA3L)

Pin Number

Name

Function

DFN3L

LGA3L

VOUT

Output

VCC

Power supply

GND

Ground

MultiDimension Technology Co., Ltd.

http://www.dowaytech.com/en/

AMR134x

High-Sensitivity Pneumatic Cylinder Switch Sensor

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