MicroSystems Inc.'s new line of user-programmable, two-wire, unipolar,
Hall-effect switches complement its existing family of devices used in seat
belt buckle, seat position and shift selector (PRNDL) applications. Allegro's A1190/2/3 family consists of
two-wire, unipolar, Hall-effect switches, which can be trimmed by the user at
end-of-line to optimize magnetic switchpoint accuracy in the application. These
devices are produced on the Allegro advanced BiCMOS wafer fabrication process,
which implements a patented high frequency, 4-phase, chopper-stabilization
technique. This technique achieves magnetic stability over the full operating
temperature range, and eliminates offsets inherent in devices with a single
Hall element that are exposed to harsh application environments.
A119x family has a number of automotive applications. These include: sensing
seat track position, seat belt buckle presence, hood/trunk latching and shift
selector position. Two-wire unipolar switches are advantageous in
cost-sensitive applications because they require one less wire for operation
versus the more traditional open-collector output switches. Additionally, the
system designer inherently gains diagnostics, because there is always output
current flowing, which should be in either of two narrow ranges. Any current
level not within these ranges indicates a fault condition.
upgrade to this family of two-wire switches is the on-chip transient protection
and a zener clamp to protect against over-voltage conditions on the supply
line. This improved high voltage transient protection allows these devices to
survive ISO 7637-2 and 40 V load dump for <0.5 secs with minimal,
and sometime no, protection from discrete components. The ESD protection has
been enhanced, such that these devices are capable of handling transients up to
8 kV Human Body Model (HBM). The A1190, A1192 and A1193 are offered in a
SOT-23W style, miniature low profile package (LH) for surface-mount
applications. All devices are priced at $0.56 in quantities of 1,000.
Enabling the Future is designing prosthetic appendages modeled more like superhero arms and hands than your average static artificial limbs. And they’re doing it through a website and grassroots movement inspired by two men’s design and creation in 2012 of a metal prosthetic for a child in South Africa.
In order to keep an enterprise truly safe from hackers, cyber security has to go all the way down to the device level. Icon Labs is making the point that security has to be built into device components.
Three days after NASA's MAVEN probe reached Mars, India's Mangalyaan probe went into orbit around the red planet. India's first interplanetary mission, and the first successful Mars probe launched by an Asian nation, has a total project cost of nearly $600 million less than MAVEN's.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.