Magnetic Sensors Line Guide - Honeywell Sensing and Control - #1

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www.honeywell.com/sensing 1 You know us as a leader, whether you’ve known us as MICRO SWITCH™ or Honeywell Sensing and Control (S&C). 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 S&C family of magnetic position sensors includes digital and analog Hall-effect position, magnetoresistive digital, Hall-effect vane, gear-tooth, and Halleffect basic switches and magnets. These high-speed, extended life sensors are often directly compatible with other electronic FEATURES 1st level hall-efect sensors - 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-89) packages • Tape and reel available 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. 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 Magnetic Sensors Line Guide continued on page 9 and surface-mount (SOT-23 and SOT-89) packages • Cost effective 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 system cost. 2.7 Vdc to 7 Vdc supply voltage range allows use in low voltage applications, promoting energy efficiency. Subminiature package size (SS311PT) allows for compact design. SS311PT is available on tape and reel for high volume, automated component placement, helping to reduce manufacturing costs. Potential applications include speed and RPM sensing, brushless dc motor commutation, tachometer, counter pickup, motor and fan control, flow-rate sensing, and robotics control. SS340RT/SS440R Series. Features: Unipolar magnetics: SS340RT responds to North pole; SS440R responds to South pole • Subminiature package size (SS340RT) • Multiple magnetic sensitivities (high, medium and low) • Low voltage 3 V capability • Built-in reverse polarity protection • Thermally balanced integrated circuit over full temperature range Benefits: Supplied in three different magnetic sensitivities to meet wide range of potential applications. The SS341RT and SS441R offer the highest sensitivity, with a typical operating point of 85 G at 25 °C [77 °F]; the SS343RT and SS443R offer medium sensitivity with 125 G typical at 25 °C [77 °F]; the SS349RT and SS449R offer the lowest sensitivity, requiring 350 G typical to operate at 25 °C [77 °F]. The SS340RT’s small size requires less PC board space, allowing it to be used in smaller assemblies. Its 3 V capability allows for use in low voltage applications, promoting energy efficiency. The SS340RT Series is available on tape and reel (3000 units per reel); the SS440R Series is available in a bulk package (1000 units per bag). Potential applications include door or lid closure detection, speed and RPM sensing in fitness equipment, flow rate sensing, damper or valve position control, cylinder position monitoring, float-based fluid level sensing and printer head position sensing. SS351AT/SS451A. Features: Omnipolar magnetics • Subminiature package size (SS351AT) • Simple activation from either South pole 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.