A1425 查看數據表（PDF） - Allegro MicroSystems

零件编号

产品描述 (功能)

生产厂家

A1425

High Accuracy Analog Speed Sensor IC with Integrated Filter Capacitor and Dual Zero-Crossing Output Signal

Allegro MicroSystems 

A1425

High Accuracy Analog Speed Sensor IC with Integrated

Filter Capacitor and Dual Zero-Crossing Output Signal

Description (continued)

The device utilizes advanced temperature compensation for the

high-pass filter, sensitivity, and Schmitt trigger switchpoints,

to guarantee optimal operation to low frequencies over a wide

range of air gaps and temperatures.

Each Hall effect digital integrated circuit includes a voltage

regulator, two Hall effect elements, temperature compensating

circuitry, a low-level amplifier, band-pass filter, Schmitt trigger,

and an output driver, which requires a pull-up resistor. The on-

board regulator permits operation with supply voltages from 4.0

to 26.5 V. The output stage can easily switch 20 mA over the full

frequency response range of the device, and is compatible with

both TTL and CMOS logic circuits.

The device is packaged in a 4-pin plastic SIP. It is lead (Pb) free,

with 100% matte tin plated leadframe.

Selection Guide

Part Number

Packing*

A1425LK-T

Bulk, 500 pieces/bag

*Contact Allegro for additional packing options.

Switchpoints

BRP(MIN)

(G)

BOP(MAX)

(G)

–11

11

Absolute Maximum Ratings

Characteristic

Supply Voltage

Reverse Supply Voltage

Continuous Output Current

Continuous Reverse-Output Current

Operating Ambient Temperature

Maximum Junction

Storage Temperature

Symbol

VCC

VRCC

IOUT

IROUT

TA

TJ(max)

Tstg

Notes

Refer to Power Derating section

Range L

Pin-out Diagram

Terminal List Table

Name

Number

VCC

1

VOUT

2

TEST

3

GND

4

1 2 34

Rating

28

–18

25

–50

–40 to 150

165

–65 to 170

Units

V

V

mA

mA

ºC

ºC

ºC

Allegro MicroSystems, Inc.

2

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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