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Honeywell Introduces the Industry's first NanoPower Anisotropic Magnetoresistive Sensor IC

Honeywell has introduced the industry’s first Nanopower Anisotropic Magnetoresistive Sensor ICs that provide the highest level of magnetic sensitivity (as low as 7 Gauss typical) while requiring nanopower (360 nA).  When compared to other widely used magnetic technologies, these sensors offer design engineers a number of advantages.

Smaller and more durable and reliable than reed switches, at the same sensitivity and essentially the same cost, the new Nanopower Series Magnetoresistive Sensor ICs are ideal for battery powered applications where previously only reed switches could be used due to very low power requirements and large air gap needs.

Compared with Hall-effect sensors, the new Nanopower Series Magnetoresistive Sensor ICs higher sensitivity can allow the ability to sense air gaps two times the distance of Hall-effect sensors. The higher sensitivity improves design flexibility and can offer significant application cost savings by utilizing smaller or lower strength magnets.

Free Sample   
Features
  • High sensitivity, 7 Gauss typ., 11 Gauss max. (SM351LT); 14 G typ., 20 Gauss max. (SM353LT)
  • Nanopower average current of 360 nA typ. (SM351LT) and 310 nA typ. (SM353LT)
  • Supply voltage range 1.65 Vdc to 5.5 Vdc
  • Omnipolar sensing
  • Temperature range -40 °C to 85 °C
  • Push-pull output
  • Non-chopper stabilized design
  • Compact SOT-23 Package
Application notes Datasheets

The Nanopower Series Magnetoresistive Sensor ICs are designed for use in a wide range of battery-operated applications including water and gas meters, electricity meters, industrial smoke detectors, exercise equipment, security systems, handheld computers, scanners, white goods, medical equipment such as hospital beds, medication dispensing cabinets, infusion pumps, and consumer electronics such as notebook computers, tablets, and cordless speakers.

The Nanopower Series is available in two magnetic sensitivities:

  • Very high sensitivity SM353LT: 14 Gauss typical operate, 20 Gauss maximum operate, very low current draw (310 nA typical)
  • Ultra-high sensitivity SM351LT: 7 Gauss typical operate, 11 Gauss maximum operate, very low current draw (360 nA typical)

The NanoPower MR sensors are omnipolar allowing them to be activated by either a north or south pole, eliminating the need for the magnet polarity to be identified, simplifying installation and potentially reducing system cost. The push-pull (CMOS) output does not require external resistors, making it easier and more cost-effective to operate whilst the non-chopper stabilized design eliminates electrical noise generated by the sensor. The devices are housed in a subminiature SOT-23 surface mount package, supplied on tape and reel (3000 units per reel), making them smaller than most reed switches, allowing for use in automated pick-and-place component installation reducing production costs.

Anglia are offering a customers a FREE NanoPower MR Sensor sample, to register for yours please fill in the form below.

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FREE samples for UK and Ireland customers only, subject to availability.

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