WSH132

Winson reserves the right to make changes to improve reliability or manufacturability.

©Winson, 2014/2/10

Unipolar Hall Effect Switch IC with built-in pull high resistor

Features:

Operates from 2.4V to 24 V supply voltage

Operates with magnetic fields from DC to 15kHz

On-chip temperature compensation circuitry minimizes shifts in on and off points

and hysteresis over temperature and supply voltage

Ideal sensor for speed measurement, revolution counting, positioning

Functional Description :

WSH132 is designed to integrate Hall sensor with output driver together on the same

chip, it is suitable for speed measurement, revolution counting, positioning. It

includes a temperature compensated voltage regulator, a differential amplifier, a

Hysteresis controller and a output driver capable of sinking up to 20mA current load.

An on-chip protection resistor is implemented to prevent reverse power fault.

The temperature-dependent bias increases the supply voltage of the hall plates and

adjusts the switching points to the decreasing induction of magnets at higher

temperatures. Subsequently, the output can keep switching on/off on more precise

switch point regardless to the ambient temperature. WSH132 are rated for operation

over temperature range from –40˚ C to 125 ˚C and voltage ranges from 2.4V to 24V.

Pin Descriptions:

Name

P/I/O

Pin#

Description

Vdd

P

1

Positive Power Supply

Gnd

O

2

Ground

Vout

O

3

Output Pin