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In
This Issue
• New Nanopower TMR Magnetic Switches
• Biosensor Paper
• Tradeshows
Nanopower
TMR Magnetic Switches
 NVE
just launched AHT92x
TMR magnetic switches, the smallest, lowest-power continuous-duty magnetic switch
sensors in the industry. They're ideal for proximity sensing in precision mechanisms
and robotics.
Ultraminiature
The new NVE sensor is a 0.65 mm square Wafer-Level Chip Scale package, which provides
unmatched miniaturization and spatial sensitivity.
Nanopower
The supply current is typically 0.35 microamps, or 450 nanowatts at 1.5 V. The
supply range extends down to 0.9 V, so it can run virtually forever on a 1.5 volt
button cell.
High Speed
The unique TMR sensor element is inherently low power, eliminating the need
for duty cycling. So they're also high speed—up to 3 kilohertz, or 180,000
RPM.
Lower Power, Faster, and Smaller than Hall Effect
For comparison, we also tested a so-called "ultralow power" Texas Instruments
Hall effect sensor. Its minimum supply is 1.65 volts, so it can't run on
a 1.5 volt battery. The TI part draws 70% more power than the NVE sensor.
And the TI sensor is slow. Since it only samples a few times per second, it can't
measure anything faster than a few Hertz.
This video shows that compared to the TI sensor, our new sensors are:
• 70% less power
• One thousand times faster
• One-fourth the size
The new NVE parts have three operate-point versions and two package options. The
Wafer-Level Chip Scale version is just 0.65 mm square. The other package option
is a 1.1 mm DFN4. We also have evaluation boards, so you don't have to solder
them by hand:
We've been introducing Wafer-Level
Chip Scale switches for the past year, with more coming. In addition to the parts
we just launched, we have continuous and duty-cycled GMR versions. Coming soon
are duty-cycled TMR versions for ridiculously low power.
| Technology |
Continuous
Duty |
Duty
Cycled |
| GMR |
ADL9xx/AHL9xx
Series
High speed; Low power
|
ADL/AHL
Series
Very low power |
| TMR |
NEW! AHT9xx
Series
High speed; Very low
power
|
COMING
SOON!
Ridiculously Low Power
|
Watch our newsletters for more nanopower sensors coming soon!
Independent Papers
An independent paper to be
published in the June 1 issue of Sensors and Actuators A: Physical describes
a high-sensitivity, low-noise, low-power, small biosensor using an NVE ALT025
TMR analog sensor:
Article
preview »
More independent papers »
Upcoming
Tradeshows
 NVE
distributor MITS Component & System Corp. will exhibit at COMPUTEX June 2
to 5 in Taipei, Taiwan, booth K1231. MITS represents NVE's unique isolators
for communications and industrial networking.
 See
NVE's unique line of magnetometers, magnetic switches, and current, angle, and
position sensors at Sensor+Test,
June 9 to 11 in Nuremberg, Germany, booth 1-519. |
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