OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

Hallogic Hall-effect Sensors

OH090U, OH180U, OH360U

OHN3000 Series, OHS3000 Series

OHN3100 Series, OHS3100 Series

OPTEK Technology Inc. —

1645 Wallace Drive, Carrollton, Texas 75006

Phone: (972) 323-2200 or (800) 341-4747

FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com

Issue A.1

06/05

Page 1 of 9

Features:

• Designed for non-contact switching operations

• Operates over broad range of supply voltages (4.5 V to 24 V)

• Operates with excellent temperature stability in harsh

environments

• Drive capability up to 7 TTL loads

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 to allow operation with a wide range of supply voltages. The 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 “O”) with after a sufficient magnetic field from the south pole of a magnet

approached the symbolized face of the device (Operating Point) and turns off (logic level “1”) after the magnetic

field reached a minimum value. The Bi-Polar latch device turns on (logic level “0”) in the presence of a magnetic

south pole and turn 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.

Product Photo Here

Pin #

Transistor

1

2

Ground

3

Output

Applications:

Sensor

Hall

Element

Voltage

Regulator

2

3

1Vcc

Output

Ground

RoHS

Ordering Information

OH090U, OH180U, OH360U

OH3013U, OH3113U

OHN3019U, OHS3019U, OHN3119U, OHS3119U

OHN3020U, OHS3020U, OHN3120U, OHS3120U

OHN3030U, 0HS3030U, OHN3130U, OHS3130U

OHN3131U, OHS3131U

OHN3040U, OHS3040U, OHN3140U, OHS3140U

Unipolar

OH3075U, OHS3075U, OHN3175U, OHS3175U

OHN3177U, OHS3177U

Bi-Polar

Latch