Magnetic Sensors Line Guide You know us as a leader, whether youve known us as MICRO with other electronic circuits, responding to the presence or SWITCH or Honeywell Sensing and and Productivity Solutions the interruption of a magnetic field by producing a proportional (S&PS). In 1968, we revolutionized the industry with the first solid- output. Gear-tooth and other packaged Hall-effect speed and state keyboard combining Hall-effect sensing and associated direction sensors sense movements of a ferrous metal target. electronics in a single circuit. Today, the Honeywell S&PS Digital and analog sensor-only devices are operated by a family of magnetic position sensors includes digital and analog permanent magnet or electromagnet, while actuation mode Hall-effect position, magnetoresistive digital, Hall-effect vane, depends on the type of magnets used. A vane passing through a gear-tooth, and Hall-effect basic switches and magnets. These gap or a magnet mounted on a plastic plunger operates integral high-speed, extended life sensors are often directly compatible magnet position sensors. FEATURES LOW POWER HALL-EFFECT Thermally balanced integrated circuit Benefits: Integrated circuitry provides SENSOR ICS - DIGITAL provides for stable operation over a wide enhanced temperature stability in a robust temperature range, of -40 to 85 C design. Thermally balanced integrated -40 to 185 F . SOT-23 subminiature circuit over full temperature range. Built-in SL353 Series. package requires less PCB space, allowing regulator provides stable operation over Features: Energy efficient Push-pull for use in smaller assemblies. North pole supply voltage range. Open-collector output Non-chopper stabilized design or South pole operation does not require sinking output voltage easily interfaces with Omnipolar magnetics Thermally the magnet polarity to be identified, making wide variety of electronic circuits. Internal balanced integrated circuit Subminiature installation easier and potentially reducing circuitry prevents sensor damage in case package size Simple activation from a system costs. Supplied on tape and reel supply voltage polarity is accidentally North pole or a South pole Tape and reel which allows for a compact design with reversed. Potential applications include packaging automated component placement, helping speed and RPM sensing, brushless dc Benefits: Supply voltage as low as 2.2 to reduce manufacturing costs. Potential motor commutation, motor and fan control, Vdc, combined with very low average applications include motion control, lid magnetic encoding, disc speed, tape current of 1.8 A typ., reduces power closure detection, presence-absence, rotation, and flow-rate sensing. consumption, provides extended battery metering, and displacement sensing on life, and promotes energy efficiency. battery-operated, mobile equipment such SS311PT, SS411P. Push-pull output does not require external as computer notebooks, scanners, hand- Features: Bipolar magnetics Enhanced pull-up resistor, simplifying interface held industrial computers, instrumentation sensitivity Built-in pull-up resistor Low with common electrical circuits and and appliances. voltage: 2.7 Vdc to 7 Vdc Subminiature potentially reducing PC board space and package size (SS311PT) Through-hole costs to the customer. Does not utilize HALL-EFFECT SENSOR ICS - and surface-mount (SOT-23 and SOT-89B) chopper stabilization, eliminating the DIGITAL packages Cost effective noise generated by products using this SS30AT, SS40A, SS50AT. Benefits: Enhanced sensitivity often allows technique, meaning that customers do not Features: Bipolar magnetics Sinking for use of smaller, less expensive magnets. need filters to compensate for the noise. output High output current capability Built-in pull-up resistor easily interfaces with Omnipolar capability with high and low duty High speed capability Reverse polarity common electronic circuits without adding cycle options allows for use in a variety protection Small through-hole and external components, helping to reduce of potential applications with low power surface mount (SOT-23 and SOT-89B) total system cost. 2.7 Vdc to 7 Vdc supply requirements and/or battery operation. packages Tape and reel available voltage range allows use in low voltage continued on page 10Magnetic Sensors Line Guide Precision. Repeatability. Low power Hall- Ruggedness. effect sensor ICs - Each Honeywell S&PS SL353 Series digital magnetic sensor IC is engineered to provide top Description micropower omnipolar digital Hall-effect sensor IC performance: Magnetic actuation type omnipolar Hall-effect sensor ICs are Package style (packaging) SOT-23 (pocket tape and reel) constructed from a thin sheet of Supply voltage range 2.2 Vdc to 5.5 Vdc conductive material with output SL353LT: 1.8 A typ. at 2.8 Vdc Supply current connections perpendicular to SL353HT: 0.33 mA typ. at 2.8 Vdc the direction of current flow. Output type digital Magnetoresistive sensor ICs Operating temperature range -40 C to 85 C -40 F to 185 F have a built-in magnetoresistive bridge integrated on silicon, encapsulated in a plastic package. The sensitive integrated circuit responds to low (25 G max.) fields at distances up to 1 inch. Hall-effect vane sensor ICs Hall-effect sensor consist of a magnet and a Hall- ICs - digital SS30AT, SS40A, SS50AT SS340RT, SS440R Series effect sensor inside a rugged plastic housing. Different low-cost bipolar digital Hall-effect package styles provide Description unipolar Hall-effect digital sensor IC sensor IC mounting flexibility. SS340RT: North pole Magnetic actuation type bipolar Gear tooth sensors use a SS440R: South pole magnetically biased Hall- SS30AT: SOT-23 (pocket tape and reel) effect IC to sense movement SS40A: at TO-92-style, standard straightfl SS340RT: SOT-23 (pocket tape and reel) Package style of ferrous metal targets. The leads (bulk) SS440R: flat TO-92-style, standard straight (packaging specially designed IC is sealed SS50AT: SOT-89B (pocket tape and reel) leads (bulk) in a durable plastic probe-type 3 Vdc to 24 Vdc, except SS340RT package. Supply voltage range 4.5 Vdc to 24 Vdc >125 C 257 F : 3 Vdc to 12 Vdc Additional built-in benefits: Supply current 10 mA max. 8 mA true solid state, extended Output type digital sinking digital sinking life (30 billion operations in a SS340RT (3 Vdc to 24 Vdc): module test program), high -40 C to 125 C -40 F to 257 F SS40A: -40 C to 125 C speed operation (over 100 Operating temperature -40 F to 257 F SS340RT (3 Vdc to 12 Vdc): kHz), stationary input (zero range SS30AT, SS50AT: -40 C to 125 C -40C to 150 C -40C to 302 F speed), no moving parts, logic -40 F to 257 F SS440R (3 Vdc to 24 Vdc): -40 C to 150 C -40 F to 302 F compatible output, and broad temperature range (-40 C to 150 C -40 F to 302 F ). 2 Sensing and Productivity Solutions