The ultra-high sensitivity SM351LT and the very high sensitivity SM353LT nanopower anisotropic magnetoresistive sensor ICs provide a high level of magnetic sensitivity (as low as 7 Gauss typical) while requiring nanopower (360 nA). The high sensitivity improves design flexibility and provides application cost savings by utilizing smaller or lower-strength magnets. The nanopower enables the ICs to be used in battery-operated equipment with extremely low power requirements.
The SM351LT and the SM353LT are designed for a range of battery-operated applications including water, gas, and electricity meters; industrial smoke detectors; exercise equipment; security systems; handheld computers; and scanners. They can also be used with household appliances (e.g., dishwashers, microwaves, washing machines, refrigerators, and coffee makers), medical equipment (e.g., hospital beds, medication dispensing cabinets, and infusion pumps), and consumer electronics (e.g. notebook computers, tablets, and cordless speakers).
The ICs’ omnipolarity enables them to be activated by either a north or south pole, eliminating the need for the magnet polarity to be identified. This simplifies installation and potentially reduces the system cost. The push-pull (CMOS) output does not require external resistors, making it easier to operate. The non-chopper stabilized design eliminates electrical noise generated by the sensor. The subminiature SOT-23 surface-mount package is smaller than most reed switches and can be used in automated pick-and-place component installation.
Contact Honeywell for pricing.
Honeywell International, Inc.