A1148LUA Allegro Microsystems Inc, A1148LUA Datasheet - Page 7

• Manufacturer Part Number: A1148LUA
• Description: IC SWITCH HALL EFFECT UNI 3-SIP
• Manufacturer: Allegro Microsystems Inc
• Type: Unipolar Switchr

Specifications of A1148LUA

• Sensing Range: 80G Trip, 10G Release
• Voltage - Supply: 3.5 V ~ 24 V
• Current - Supply: 5mA
• Output Type: Digital, Open Collector
• Features: Regulated Voltage
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 3-SIP
• Magnetic Type: Unipolar
• Operating Supply Voltage (min): 3.5V
• Operating Supply Voltage (typ): 5/9/12/15/18V
• Operating Supply Voltage (max): 24V
• Mag Sensor Operate Point (g): 80Gs
• Mag Sensor Release Point (g): 10Gs
• Mag Sensor Hysteresis(g): 15Gs
• Package Type: Ultra Mini SIP
• Pin Count: 3
• Mounting: Through Hole
• Operating Temp Range: -40C to 150C
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output (max): -
• Lead Free Status / RoHS Status: Not Compliant, Contains lead / RoHS non-compliant

A1147
A1148
Operation
The output, I
magnetic field at the Hall element exceeds the operate point
threshold, B
release point threshold, B
differences between the magnetic operate and release point is
called the hysteresis of the device, B
Figure 1. Alternative switching behaviors are available in the A114x device family. On the horizontal axis, the B+ direction indicates
increasing south polarity magnetic field strength, and the B– direction indicates decreasing south polarity field strength (including the
case of increasing north polarity).
OP
CC
and
. When the magnetic field is reduced to below the
, of the A1147 device switches low after the
I+
0
B–
RP
(A) A1147
, the device output goes high. The
B
HYS
Chopper-Stabilized Unipolar Hall Effect Switches
HYS
. This built-in hysteresis
B+
I
I
CC(H)
Functional Description
CC(L)
Low Current Ultrasensitive Two-Wire
allows clean switching of the output even in the presence of
external mechanical vibration and electrical noise. The A1148
device switches with opposite polarity for similar B
values, in comparison to the A1147 (see figure 1).
I+
0
B–
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
(B) A1148
B
HYS
B+
I
I
CC(H)
CC(L)
OP
and B
RP
6