February 25, 2025—NVE Corporation today introduced new proximetry switch sensors that it says are the world’s most advanced magnetic switch sensors with a number of best-in-class features. The ADA-series sensors use advanced sensing elements to eliminate double switching artifacts in applications such as cylinder position sensing.
They come in single or dual threshold versions and can operate up to 150 degrees Celsius for on power supplies up to 30 volts. They feature 20 milliamp output drive and greater than one tesla field immunity. Applications include In addition to pneumatic cylinder position sensing, applications include proximity sensing, speed sensing and rotation sensing.
The single-threshold ADA021 and ADA021-00E have a typical operate point of two millitesla. The ADA021-10E is packaged as an ultraminiature 2.5 by 2.5 millimeter DFN6, and the ADA021-00E is in an industry-standard MSOP8 package. The two-threshold ADA32124-00E has operate points of 2 and 2.8 millitesla. The two operate points can be used to detect speed and direction, control end-of-travel speed, or tune ultraprecise switching thresholds.
Exceptionally rugged, the robust parts have an extended 150 degrees Celsius temperature range for harsh industrial environments and operate from 4.5 to 30-volt power supplies. The sensors can withstand magnetic fields up to 1.4 tesla without their operation being disturbed, making them immune to the effects of high external currents or strong motor magnets.
An evaluation board allows easy testing of an ADA32124-00E two-threshold sensor by design engineers seeking to apply the sensors . The board includes the sensor and LEDs to indicate the state of the two outputs. The board can be powered with a 4.5 to 30-volt supply.
Based in Eden Prairie, Minnesota, NVE is a leader in the practical commercialization of spintronics, a nanotechnology that relies on electron spin rather than electron charge to acquire, store and transmit information. The company manufactures high-performance spintronic products including sensors and couplers that are used to acquire and transmit data. See www.nve.com.
