AH175

Hall Effect Latch For High Temperature

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of

this product. No rights under any patent accompany the sale of the product.

Rev. 0.7 May 7, 2004

1/6

Features

- Bipolar Hall effect latch sensor

- 3.5V to 20V DC operation voltage

- Open collector pre-driver

- 25mA output sink current

- Chip power reverse-connection protection

- Operating temperature:

C

125

~

C

40

°

+

°

−

- Package: SIP3, SOT23

Applications

- Rotor position sensing

- Current switch

- Encoder

- RPM detection

Pin Assignment

(SIP3 package)

( SOT23 package)

1. VCC

2. GND

3. OUT

1. VCC

3.

GND 2.

OUT

(Top view)

General Description

AH175 is a single-digital-output Hall-effect sensor

for high temperature operation. The device includes

an on-chip Hall voltage generator for magnetic

sensing, an amplifier to amplify Hall voltage, and a

comparator to provide switching hysteresis for noise

rejection, and an open-collector output pre-driver.

An internal bandgap regulator is used to provide

temperature compensated supply voltage for

internal circuits and allows a wide operating supply

range.

While the magnetic flux density (B) is larger than

threshold Bop, the OUT pin turns on (low). If B

removed toward Brp, the OUT pin is latched “on”

state prior to B < Brp. When B < Brp, the OUT pin

go into “ off ” state.

Pin Descriptions

Name

Description

VCC

Input power

GND

Ground

OUT

Output stage

Ordering Information

AH175 X -X X X -X

Packing

Blank : Tube

A : Taping

P: SIP3

W: SOT23

Package

Lead

L : Lead Free

Blank: Normal

Wafer Body

Magnetic

Characteristics

Blank or

A~Z : if necessary

to specify

A or B