High Reliability Hallogic® Hall-
Effect Sensors
OMH090, OMH3019, OMH3020, OMH3040,
OMH3075, OMH3131 (B, S versions)
© TT electronics plc
Issue K-1 08/2016 Page 1
OPTEK Technology, Inc.
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www.ttelectronics.com
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
Lead finish = Solder Dipped (Sn 63/37)
Pin # Description
1 V
CC
2 Ground
3 Output
* Add capacitor for stable operaon
Description:
These Hall-effect devices contain a
monolithic integrated circuit which
incorporates a Hall element, a linear
amplifier, a threshold amplifier, and
Schmitt trigger on a single Hallogic®
silicon chip. Included on-chip is a band-
gap voltage regulator that allows
operation with a wide range of supply
voltages. These devices feature logic
level output and provide up to 21 mA of
sink current. This allows direct driving of
more than 7 TTL loads or any standard
logic family using power supplies
ranging from 4.5 to 24 volts. Output
amplitude is constant at switching
frequencies from DC to over 200 kHz.
The Uni-Polar turns on with a (logic
level “0”) after a sufficient magnetic field
from the south pole of a magnet
approaches the symbolized face of the
device (operating point) and turns off
(logic level “1”) after the magnetic field
reaches a minimum value. The Bi-Polar
device turns on (logic level “0”) in the
presence of a magnetic south pole and
turns off (logic level “1”) when subjected
to a magnetic north pole. Both
magnetic poles are necessary for
operation for Bi-Polar devices. This
feature makes these sensors ideal for
applications in non-contact switching
operations, brushless DC motors and for
use with multiple pole magnets.
B and S devices are processed to
OPTEK’s military screening program
patterned after MIL-STD-883. This
product has passed Radiation Hardness
testing up to 350 Krad (si) per MIL-STD-
883 method 1019.6 and up to 150
Krad (si) for ELDRS.
Contact your local representative or
OPTEK for more information.
Applications:
• Non-contact switching operations
• Brushless DC motors
• Multiple pole magnets
• Non-contact reflective object sensor
• Assembly line automation
• Machine automation
• Machine safety
• End of travel sensor
• Door sensor
Features:
• Designed for non-contact switching operations
• Operates over a broad range of supply voltages
• Excellent temperature stability operates in harsh environments
• Suitable for military and space applications
• Processing patterned after class B or S of MIL-STD-883
• Through Hole 0.40” [10.16 mm] lead length minimum
• ESD Rating of Class 3B per MIL-STD-883G, M3015.7, HB model.
Ceramic Package
DIMENSIONS ARE IN:
INCHES
[MILLIMETERS]
