A1183ELHLT Allegro Microsystems Inc, A1183ELHLT Datasheet - Page 10

• Manufacturer Part Number: A1183ELHLT
• Description: IC SWITCH HALL EFFECT UNI SOT-23
• Manufacturer: Allegro Microsystems Inc
• Type: Unipolar Switchr

Specifications of A1183ELHLT

• 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,
For additional general application information, visit the Allegro
MicroSystems Web site at www. allegromicro.com.
Typical Application Circuit
The A118x family of devices must be protected by an external
bypass capacitor, C
and the ground, GND, of the device. C
noise and the noise generated by the chopper-stabilization func-
tion. As shown in fi gure 3, a 0.01 μF capacitor is typical.
Installation of C
the A118x pins are no greater than 5 mm in length.
All high-frequency interferences conducted along the supply
lines are passed directly to the load through C
only to protect the A118x internal circuitry. As a result, the load
ECU (electronic control unit) must have suffi cient protection,
other than C
A series resistor on the supply side, R
nation with C
information on EMC is provided on the Allegro MicroSystems
Web site.)
When determining the minimum V
device, the voltage drops across R
R
R
SENSE
SENSE
, must be taken into consideration. The typical value for
is approximately 100 Ω.
and
BYP
BYP
, installed in parallel with the A118x.
BYP
A1183
, creates a fi lter for EMI pulses. (Additional
BYP
must ensure that the traces that connect it to
, connected between the supply, VCC,
S
Chopper-Stabilized Unipolar Hall Effect Switches
CC
and the ECU sense resistor,
S
requirement of the A118x
BYP
(not shown), in combi-
reduces both external
BYP
, and it serves
Application Information
Sensitive Two-Wire Field-Programmable
Figure 3. Typical application circuit
V+
A
GND
A118x
ECU
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
VCC
R
GND
SENSE
A
B
Package UA Only
Maximum separation 5 mm
B
B
C
0.01 uF
BYP
9