The SM223-10E Smart Magnetometer combines a Tunneling Magnetoresistance (TMR) sensor element with
sophisticated digital signal processing for a unique combination of speed and precision. An I2C interface provides data as well as an external programming interface, and allows setting a versatile digital threshold output.
Unlike awkward, old-fashioned Hall-effect sensors, TMR is sensitive in-plane for
optimal current sensing and easy mechanical interfaces. Key features include:
0 to 1.5 mT linear range
Can detect magnets more than 150 mm away
Simple I2C interface
Programmable digital threshold output
2% of full-scale accuracy for 0 to 125°C
Fast 10000 sample-per-second update rate
Programmable offset and gain compensation
-40°C to +125°C operating range
Ultraminiature 2.5 x 2.5 mm DFN6 package
NVE's ABL005-10E GMR sensor is an analog output sensor for gear tooth sensing or magnetic encoders. The part features differential sensor elements spaced 0.5 mm apart on the sensor IC arranged in a full bridge configuration.
Bridge Resistance (Ohms)
Linear Range (Oersteds)
Differential Sensor (Gradiometer); senses the magnetic field gradient across the sensor IC. Center to center distance between sensor elements is 0.500 mm.
4K - 7K
+/-5 to +/-100
Gear Tooth or Encoder
Note: Parts must be purchased in multiples of 100 for quantities of 100 or more. Larger quantities are subject to NVE's standard lead times.
The AG972-07E Demonstration Board showcases rotational encoding to
a few thousandths of a degree with an ABT375-00E sensor and a 30-tooth gear.
The kit includes:
A 3 x 5-inch (76 x 127 mm) PCB
An ABT375-00E gear tooth sensor
An eight-digit rotational display
a 30-tooth. 0.5 module gear
Part #12216 ceramic bias magnet
Test points for analog outputs
Powered by two AAA batteries (included)
NVE's AHL023-14E Nanopower Switch integrates GMR sensor elements with digital onboard
signal processing and duty-cycling electronics. The Nanopower Switch is extremely small and extremely low power.
Ultraminiature 1.1 mm x 1.1 mm x 0.45 mm ULLGA package
Low Voltage Operation to 0.9 V
95 nA Typical Supply Current
110 Hz Typical Update Frequency
Digital Switch Output
Integrated Duty-Cycle Operation
The ILDC11VE is a miniature, one-quarter watt fully-regulated 3.3V-to-3.3V DC-DC convertor. The part can be used to generate an isolated 3.3-volt bus supply from a controller supply.
NVE’s proven IsoLoop® isolation technology and a unique ceramic/polymer composite barrier provide best-in-class 5 kV isolation and virtually unlimited barrier life.
The unique True-8(TM) package provides true eight-millimeter creepage in accordance with IEC60601. Maximum 5 mV peak-to-peak ripple means low noise.
The device minimizes board space and parts count, requiring just three external capacitors. No additional regulation is required and there is no minimum load.
Frequency hopping and shielding reduce EMI, and ferrite beads are not necessary for EMI mitigation.
A high-temperature process allows up to 175 °C junction temperature for full power up to 125 °C operating temperature with no derating. Integrated short-circuit protection avoids excessive power dissipation.