NVE Introduces TMR Magnetic Switches
New sensors combine low voltage, nanopower, and high speed
EDEN PRAIRIE, Minn.October 14, 2019NVE Corporation today announced
revolutionary new AHT-Series Tunneling Magnetoresistance (TMR) magnetic switches,
which combine low voltage, nanopower, and high speed.
AHT-Series sensors operate as low as 0.9 volts, so they can be powered by
single-cell alkaline batteries.
TMR technology provides ultralow power. Typical AHT-Series quiescent supply current
is less than one microamp with no duty cycling. That means the parts will
run nearly forever on button cells, making them ideal for battery applications
such as medical devices, utility meters, and portable instruments.
Configured as Switches
Outputs are configured as magnetic switches, turning on when a magnetic
field is applied and off when the field is removed. The field can be either polarity.
Continuous operation without duty cycling means the sensors are fast, with at
least 1.5 kilohertz switching frequency.
Magnetic operate points are as low as 1.5 millitesla.
AHT sensors come in ultraminiature 1.1 by 1.1 by 0.35 millimeter (0.043 by
0.043 by 0.014 inch) ULLGA-4 packages.
0.9 to 1.8 volts supply voltage
1 microamp typical supply current
1.5, 2.2, 3.2, or 4.5 millitesla operate points
(AHT925-14E, AHT924-14E, AHT923-14E, and AHT922-14
1500 hertz switching speed
-40 to 85 degrees Celsius temperature range
AHT-Series sensors are are in stock for immediate delivery, and priced at $3.83 each
in 1000-piece quantities.
Click here to download the AHT-Series
datasheet, or visit www.nve.com for more information.
Three Families of Nanopower Sensors
NVE has two other families of nanopower sensors in addition to the new AHT-Series
TMR magnetic switches. AHL-Series GMR magnetic switches have a 0.9 to 2.4-volt
supply range. ADT-Series GMR magnetic switches have a 2.4 to 3.6-volt supply range
for 3.3-volt or lithium battery power supplies. AHT- and AHL-Series sensors use
GMR (Giant Magnetoresistance) technology with continuous-duty and duty-cycled
versions. All of the sensors are available with a choice of magnetic
operate points, and all use NVEs ultraminiature 1.1 by 1.1
by 0.35 millimeter ULLGA-4 package.
Leaders in Practical Spintronics
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.
Statements used in this announcement that relate to future plans, events, or
performance are forward-looking statements that are subject to certain risks and
uncertainties including, among others the risk factors listed from time to time
in our filings with the SEC, including our Annual Report on Form 10-K and other
reports filed with the SEC.