Waterproof MEMS barometric pressure sensor platform delivers high accuracy

TDK has released the InvenSense ICP-10125, part of the SmartPressure family of the MEMS barometric pressure sensor platform. The device achieves what it claims is the industry’s lowest pressure noise of 0.4Pa RMS, attains the industry’s lowest power consumption of 1.3µA, and assures superior temperature stability with a temperature coefficient of ±0.5Pa/C.

The device links a barometric pressure and a temperature sensor in a small 3.55mm x 3.55mm x 1.45mm chimney package with waterproofing gel, offering IPX8 waterproofing to 10ATM. The uniform machined lid and chimney with groove allow easier handling at production and assembly of customer products. The solution is targeted at the smartwatch, fitness, and portable device markets that aid in fitness activity monitoring, location tracking for E911 calls, and indoor/outdoor navigation (dead-reckoning, floor/elevator/step detection).

The family employs an innovative capacitive MEMS architecture to produce lower power consumption and lower noise than competing pressure sensors technologies. With its ultra-low noise and low power consumption, the device is ideal for wearable fitness monitoring and battery-powered IoT. It can measure height change as little as 8.5cm, less than the height of a single stair step.

“ICP-10125 delivers high accuracy, low power, temperature stability, and waterproofing in a small package footprint targeting the wearable market,” said Uday Mudoi, director of product marketing at InvenSense, a TDK group company. “It enables determination of accurate location of E911 calls, tracks changes in elevation for activity monitoring, and extends battery life of always-on motion-sensing applications.”

A comprehensive development kit (DK-10125) and evaluation platform are also offered and necessary software to facilitate quick-to-market development of customer systems.