A3423EK-T Allegro Microsystems Inc, A3423EK-T Datasheet - Page 8

• Manufacturer Part Number: A3423EK-T
• Description: IC,HALL-EFFECT SENSOR,SINGLE-ENDED,SIP,4PIN,PLASTIC
• Manufacturer: Allegro Microsystems Inc
• Type: Special Purposer

Specifications of A3423EK-T

• Sensing Range: 55G Trip, -55G Release
• Voltage - Supply: 3.8 V ~ 24 V
• Current - Supply: 14mA
• Current - Output (max): 30mA
• Output Type: Digital, Open Collector
• Features: Regulated Voltage
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 4-SIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1206

A3423
Operation with Fine-Pitch Ring Magnets
cular pitch of less than 4 mm, a performance improvement can be
observed by rotating the front face of the device (see below). This
rotation decreases the effective Hall element-to-element spacing,
provided that the Hall elements are not rotated beyond the width
of the target.
Applications
0.01 μF bypass capacitor be connected (in close proximity to the
device) between the supply and ground of the device to
. It is strongly recommended that an external
Target Profile of Rotation
S
N
Dual Channel Hall Effect Direction Detection Sensor IC
S
Target Circular Pitch, P
. For targets with a cir-
Normal Coplanar Alignment
D
Application Information
E1
E2
reduce both external noise and noise generated by the internal
logic.
The simplest form of magnet that will operate these devices is a
ring magnet. Other methods of operation, such as linear magnets,
are possible. Extensive applications information on magnets and
Hall-effect sensor ICs is also available in the “Hall-Effect IC
Applications Guide” which can be found in the latest issue of
Application Note 27701, at www.allegromicro.com/techpub2/an/
an27701.pdf.
Target Face Width, F
F < D sin
Rotated Alignment
E1
E2
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
D cos
7