Magnetic Sensors
Line Guide
with other electronic circuits, responding to the presence or the
interruption of a magnetic field by producing a proportional
output. Gear-tooth and other packaged Hall-effect speed and
direction sensors sense movements of a ferrous metal target.
Digital and analog “sensor-only” devices are operated by a
permanent magnet or electromagnet, while actuation mode
depends on the type of magnets used. A vane passing through
a gap or a magnet mounted on a plastic plunger operates
integral magnet position sensors.
You know us as a leader, whether you’ve known us as MICRO
SWITCH or Honeywell Sensing and Internet of Things (SIoT).
In 1968, we revolutionized the industry with the first solid-
state keyboard combining Hall-effect sensing and associated
electronics in a single circuit. Today, the Honeywell SIoT family
of magnetic position sensors includes digital and analog
Hall-effect position, magnetoresistive digital, Hall-effect vane,
gear-tooth, and Hall-effect basic switches and magnets. These
high-speed, extended life sensors are often directly compatible
FEATURES
LOW POWER HALL-EFFECT SENSOR
ICS - DIGITAL
operation. Thermally balanced integrated
circuit provides for stable operation over a
wide temperature range, of -40° to 85°C
[-40° to 185°F]. SOT-23 subminiature
package requires less PCB space,
Benefits: Integrated circuitry provides
enhanced temperature stability in a
robust design. Thermally balanced
integrated circuit over full temperature
range. Built-in regulator provides stable
operation over supply voltage range.
Open-collector sinking output voltage
easily interfaces with wide variety of
electronic circuits. Internal circuitry
prevents sensor damage in case supply
voltage polarity is accidentally reversed.
Potential applications include speed
and RPM sensing, brushless dc motor
commutation, motor and fan control,
magnetic encoding, disc speed, tape
rotation, and flow-rate sensing.
SL353 Series.
Features: Energy efficient • Push-
pull output • Non-chopper stabilized
design • Omnipolar magnetics •
Thermally balanced integrated circuit
• Subminiature package size • Simple
activation from a North pole or a South
pole • Tape and reel packaging
allowing for use in smaller assemblies.
North pole or South pole operation does
not require the magnet polarity to be
identified, making installation easier
and potentially reducing system costs.
Supplied on tape and reel which allows
for a compact design with automated
component placement, helping to
reduce manufacturing costs. Potential
applications include motion control, lid
closure detection, presence-absence,
metering, and displacement sensing
on battery-operated, mobile equipment
such as computer notebooks, scanners,
hand-held industrial computers,
Benefits: Supply voltage as low as 2.2
Vdc, combined with very low average
current of 1.8 uA typ., reduces power
consumption, provides extended battery
life, and promotes energy efficiency.
Push-pull output does not require
external pull-up resistor, simplifying
interface with common electrical circuits
and potentially reducing PC board space
and costs to the customer. Does not
utilize chopper stabilization, eliminating
the noise generated by products using
this technique, meaning that customers
do not need filters to compensate for the
noise. Omnipolar capability with high
and low duty cycle options allows for use
in a variety of potential applications with
low power requirements and/or battery
SS311PT, SS411P.
Features: Bipolar magnetics • Enhanced
sensitivity • Built-in pull-up resistor • Low
voltage: 2.7 Vdc to 7 Vdc • Subminiature
package size (SS311PT) • Through-hole
and surface-mount (SOT-23 and SOT-
89B) packages • Cost effective
instrumentation and appliances.
HALL-EFFECT SENSOR ICS - DIGITAL
SS30AT, SS40A, SS50AT.
Features: Bipolar magnetics • Sinking
output • High output current capability
• High speed capability • Reverse polarity
protection • Small through-hole and
surface mount (SOT-23 and SOT-89B)
packages • Tape and reel available
Benefits: Enhanced sensitivity often
allows for use of smaller, less expensive
magnets. Built-in pull-up resistor easily
interfaces with common electronic
circuits without adding external
components, helping to reduce total
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