A3423LK-T Allegro Microsystems Inc, A3423LK-T Datasheet - Page 7

• Manufacturer Part Number: A3423LK-T
• Description: IC DIRECTION SENSOR 2CH 4-SIP
• Manufacturer: Allegro Microsystems Inc
• Type: Special Purposer

Specifications of A3423LK-T

• Package / Case: 4-SIP
• 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 ~ 150°C
• Output Current: 30mA
• Sensor Case Style: SIP
• No. Of Pins: 4
• Supply Voltage Range: 3.8V To 24V
• Operating Temperature Range: -40°C To +150°C
• Base Number: 3423
• Supply Voltage: RoHS Compliant
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1207

A3423
Operation with Fine-Pitch Ring Magnets
circular pitch of less than 4 mm, a performance improvement can
be observed by rotating the front face of the sensor subassembly
(see below). This sensor rotation decreases the effective Hall ele-
ment-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
Hall sensor) 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
S
Target Circular Pitch, P
. For targets with a
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 sensors 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, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
D cos
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