A3425LK-T Allegro Microsystems Inc, A3425LK-T Datasheet - Page 9

• Manufacturer Part Number: A3425LK-T
• Description: Hall Effect Switch IC
• Manufacturer: Allegro Microsystems Inc
• Type: Bipolar Latchr

Specifications of A3425LK-T

• Peak Reflow Compatible (260 C): Yes
• Output Current: 70mA
• Termination Type: Through Hole
• Supply Voltage Max: 18V
• Leaded Process Compatible: Yes
• No. Of Pins: 4
• Hall Effect Type: Bipolar
• Supply Voltage Min: 3.3V
• Sensing Range: 35G Trip, -35G Release
• Voltage - Supply: 3.3 V ~ 18 V
• Current - Supply: 6mA
• Current - Output (max): 20mA
• Output Type: Digital, Open Drain
• Features: Ultra Sensitive
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 4-SIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A3425
at Hall Element E1
at Hall Element E2
M agnetic Field
M agnetic Field
Output Signal
Output Signal
at OUTPUTA
at OUTPUTB
Channel A
Channel B
Channel A
Channel B
Output voltage in relation to magnetic fl ux density received.
Output on each channel independently follows the same
pattern of transition through B
through B
Quadrature output signal confi guration. The outputs of the two
output channels have a phase difference of 90º when used
with a properly designed magnet that has an optimal pole pitch
of twice the Hall element spacing of 1.0 mm.
Typical Applications Operation
Ultra-Sensitive Dual-Channel Quadrature
RP
.
V+
B
HYS
OP
followed by transition
B+
Hall-Effect Bipolar Switch
V
V
OUTPUT(ON)(sat)
OUTPUT(OFF)
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
8