Micropower Ultrasensitive Hall Effect Switch

A1171

6

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Figure . Operation with Unipolar Mode Selected (SELECT Pin Grounded)

B+

B–

V+

0

0

B+

B–

V+

0

0

(A) VOUTPN

(B) VOUTPS

SELECT Pin Settings Effect on Output

Output Pin

SELECT Pin

Configuration

Output Description

Number

Name

1

VOUTPS

Tied to VDD or floating

Omnipolar output; ON with magnetic field of sufficient

Tied to ground

Unipolar output; ON with south polarity magnetic field of



VOUTPN

Tied to VDD or floating

Omnipolar output; OFF with magnetic field of sufficient

Tied to ground

Unipolar output; ON with north polarity magnetic field of