Coto Technology Inc. has released the RedRock RR110 analog sensor, RR120 digital
sensor, and RR130 digital switch. With a standard SOT- 23 package, these devices are half
of the size of Coto’s CT05 molded reed switch. While consuming little power, they offer
both high magnetic sensitivity with high hysteresis and EMF resistance, a small package
size, and a highly-competitive price. The devices are ideally suited to the demands of next
generation medical, automotive, instrumentation, and industrial applications.
The RedRock series meets the strict power constraints of battery-operated portable devices
and electronics of emerging medical device applications including ingestibles and implantables. The small package size addresses the needs of current medical applications including
portable insulin pumps, capsule endoscopes, next generation hearing aids, insulin pens,
medical wearables, and other small, battery-powered medical electronic devices. Other applications include consumer smart wearables, high precision fluid level sensing, security and
anti-tampering, “wake up” mode switching on a microprocessor, and more.
Tiny 3-Axis, Low-Power Accelerometer
STMicroelectronics’ LIS2DW12 3-axis accelerometer delivers superior
accuracy, flexibility, and energy savings by supporting multiple low-power
and low-noise settings in a 2mm x 2mm x 0.7mm package. The LIS-
2DW12 has 16-bit output and can be set to prioritize low power consumption or low-noise performance, with five settings in either mode.
Noise density down to 90µg/Hz improves the measurement accuracy in
next-gen applications such as healthcare, fitness, and gaming.
Drawing as little as 50nA in standby, or 380nA in low-power mode at 1.6Hz
Output Data Rate, the LIS2DW12 adds negligible load on the battery. The
supply-voltage range of 1.62-3.6V allows extended operation from small coin
or button cells. Features that support system-level power savings include a
32-level FIFO, a built-in temperature sensor, and a programmable interrupt for
freefall, wake up, activity/inactivity, 6D/4D orientation detection, and tap/dou-ble-tap detection. Pricing is from $0.75 for orders of 1000 pieces.
Proximal Flow Sensors for Neonatal Applications
Sensirion has launced the SFM3400 flow sensor, a proximal sensor for flow rates of up to 33 slm,
making it suitable for use in the neonatology and pediatric care segments. The digital SFM3400
is fully bi-directionally calibrated, extremely accurate and robust, and has a fast signal processing
time. The special design of the flow channel results in minimal dead space (<1 ml), while the
slightly increased pressure drop ensures extremely high stability in varying inlet conditions.
The sensor can also be connected via medical cones to establish a pneumatic connection
to the respiratory cycle. It has a mechanical interface for setting up a user-friendly electrical
connection. Combined, these features make the new neonatal proximal flow sensor particularly
suitable for proximal flow measurements in medical ventilation and anesthesia. It is also ideal
for other neonatal OEM applications requiring proximal flow measurements.
The new flow sensor is available as both a single-use solution (SFM3400-D) and a reusable
IR Fitness Monitor Sensor
The IR Topled D5140 fitness monitor sensor is the updated version of the SFH 2440 photo-diode recently introduced for fitness sensors. A pre-molded package soldered to the bottom
of the package forms the basis of the new component, whereas earlier packages had to be
soldered to side legs. Because these legs are no longer there in the new design, the Topled
D5140 is approximately 1.4 mm shorter, now measuring 5.1 millimeters (mm).
Along with the short switching time of 90 nanoseconds (typ.), the spectral sensitivity optimized for
visible light is particularly noteworthy, with a maximum sensitivity of 620 nanometers. However,
in the infrared spectral range the sensitivity of the two photodiodes is greatly suppressed. It also
features a short switching time, allowing light signal controlled with heart rate to be time-resolved.