A1182ELHLT Allegro Microsystems Inc, A1182ELHLT Datasheet - Page 7

• Manufacturer Part Number: A1182ELHLT
• Description: IC SWITCH HALL EFFECT UNI SOT-23
• Manufacturer: Allegro Microsystems Inc
• Type: Unipolar Switchr

Specifications of A1182ELHLT

• Sensing Range: 60G ~ 200G Trip - Programmable, Fixed Release
• Voltage - Supply: 3.5 V ~ 24 V
• Current - Supply: 6.9mA
• Output Type: Digital, Open Collector
• Features: Programmable
• Operating Temperature: -40°C ~ 85°C
• Package / Case: SOT-23W
• 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): 200Gs
• Mag Sensor Hysteresis(g): 15Gs
• Package Type: SOT-23W
• Pin Count: 3
• Mounting: Surface Mount
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• 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

A1180, A1181,
A1182,
Operation
The output, I
after the magnetic fi eld at the Hall element exceeds the oper-
ate point threshold, B
below the release point threshold, B
high. The 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 A118x device family. On the horizontal axis, the B+ direction indicates
increasing south polarity magnetic fi eld strength, and the B– direction indicates decreasing south polarity fi eld strength (including the
case of increasing north polarity).
and
CC
, of the A1180 and A1182 devices switch low
A1183
I+
0
B–
(A) A1180 and A1182
OP
. When the magnetic fi eld is reduced to
B
HYS
Chopper-Stabilized Unipolar Hall Effect Switches
RP
, the device output goes
HYS
B+
. This built-
I
I
CC(H)
Functional Description
CC(L)
Sensitive Two-Wire Field-Programmable
in hysteresis allows clean switching of the output even in the
presence of external mechanical vibration and electrical noise.
The A1181 and A1183 devices switch with opposite polarity for
similar B
A1183 (see fi gure 1).
OP
and B
I+
0
RP
B–
values, in comparison to the A1180 and
(B) A1181 and A1183
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
B
HYS
B+
I
I
CC(H)
CC(L)
7