AH337

Single Phase Hall Effect Switch

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.1.2 Mar. 29, 2006

1/8

Features

- 4.2V to 28V DC operation voltage

- Temperature compensation

- Wide operating voltage range

- Open drain pre-driver

- 25mA maximum sinking output current.

- Package: SIP3, SOT23

Applications

- VCD/DVD loader, CD/DVD ROM

- Cover detector

- Speed measurement

- Home appliances

- Home safety

General Description

AH337 is an switched Hall-Effect IC which is for

contactless switching applications. The device

includes an on-chip Hall voltage generator for

magnetic sensing, an amplifier that amplifies the

Hall voltage, a schmitt trigger to provide switching

hysteresis for noise rejection, and an open-drain

output. The bandgap regulator allows a wide

operating voltage range.

If a magnetic flux density larger than threshold Bop,

DO is turned on(low). The output state is held until

a magnetic flux density reversal falls below Brp

causing DO to be turned off (high).

Pin Assignment

337

1

2 : GND

3 : OUT

23

337

1

2

3

1 : Vdd

(Top view)

(SIP package)

(SOT23 package)

Pin Descriptions

Name

P/I/O

Pin #

Description

Vdd

P

1

Positive Power Supply

GND

P

2

Ground

OUT

O

3

Output Pin

Ordering Information

AH337 X - X X X

Packing

P: SIP3

W: SOT23

Package

Lead

L : Lead Free

Wafer Body

Blank or

A~Z : if necessary

to specify

Spread-leg ammo pack for SIP-3L;

Blank : Bulk

A

:

Tape & Reel for SOT23