The BMA400 has a current consumption of 14 μA at the
highest performance, continuous measurement, and a noise
density of 220 μg/√Hz. This drops to 1 μA and below in the
ultra-low-power self-wake-up mode.
Due to continuous measurement, the sensor’s high-quality
measurement signal has precisely defined cutoff frequencies,
making it very resistant to vibration. This is particularly useful in
IoT use cases such as smart home security systems, in which the
BMA400 can distinguish between real alarm situations like broken
glass and false signals coming from random vibrations. This pre-
vents false alarms being triggered from the outside environment.
The combination of a small package size of 2.0 × 2.0 × 0.95 mm³
and the integrated plug-and-play step counter make the BMA400
easy to design into a variety of wearables, including opening up new
opportunities for traditional watches and jewelry. The device also
includes a built-in voltage regulator and flexible device tuning for
power consumption, noise, and ODR parameters.CORNELL DUBILIER
THA Series Thinpack Aluminum Electrolytic Capacitors
http://www.cde.com
Cornell Dubilier Electronics, Inc. (CDE) has announced a new
development in aluminum electrolytic technology, delivering very
high density in thin-profile packages. Featuring thin profiles, the
85°C THA Series Thinpack capacitors are only 8.2 mm thick, while
the 105°C THAS Series offers a 9-mm profile. This is comparable
in height to V-chip electrolytics, tantalums, and board-mounted
axials but with a much higher bulk-storage capability.
The THA/THAS devices offer very high energy density up
to 1.1 J/cc and up to
0.9 J/cc, respectively.
The capacitance range
for both series is 60
μF to 18,000 μF with
a ±20% tolerance.
Each series offers 72
capacitance/voltage
combinations.
The operating
temperature rangefor the THA caps is –55°C to 85°C (3,000-hour life @ 85°C),
while the THAS devices offer an extended range up to 105°C
(3,000-hour life @ 105°C). Unlike traditional cylindrical elec-
trolytics, the THA/THAS capacitors have a sealed, laser-weld-
ed aluminum case, which eliminates the need for end-seal
gaskets, providing up to a 60% space reduction.
A single THA/THAS capacitor can replace an array of
SMT, axial or radial aluminum electrolytic, or solid tantalum
capacitance arrays. That substitution can allow engineers to
design smaller products with simplified assembly and higher
reliability. In most applications, there are significant cost,
weight, and space savings versus a comparably rated bank
of SMT or axial aluminum electrolytic capacitors, said CDE,
which can deliver a board space reduction of 70% as well as
improved overall circuit reliability thanks to the smaller part
and connection counts.
Re-engineered to be thinner and more cost-effective, the
THA/THAS capacitors are a good fit for a variety of high-per-
formance electronics, including tablets, laptops, instrumen-
tation, commercial-grade LED driver modules, compact
power supplies, drones and RPVs, set-top boxes, and 1U
rack-mounted devices.CUI
AMT21 and AMT23 Absolute Modular Encoders
http://www.cui.com
CUI’s AMT21 and AMT23 series are rugged, high-accuracy
absolute modular encoders that output 12 bits or 14 bits of
absolute position information. The AMT21 series, featuring
high-speed RS-485 communication, and the AMT23 series,
designed with a synchronous serial interface (SSI), are based on
CUI’s proprietary capacitive sensing technology.
The capacitive platform offers an accurate position feedback
solution that is resilient to dirt, dust, and oil typically encoun-
tered in industrial applications. The devices offer low current
draw of 8 mA at 5 V and accuracy of ±0.2 mechanical degrees,
making them well-suited for battery-powered industrial, robot-
ics, and automation applications.
Both models, housed in packages as small as 1.53 × 1.12 × 0.40
inches (39 × 28 × 10 mm), also come with a locking hub for easy
installation. They are also available in either radial or axial orienta-JANUARY 2019 • electronicproducts.com • ELECTRONIC PRODUCTS
20 COVER STORY 43rd Annual Product of the Year Awards