The TDK ICP-101xx barometric pressure sensor family is based on MEMS capacitive technology which provides ultra-low noise at the lowest power, enabling industry leading relative accuracy, sensor throughput, and temperature stability.
Capacitive pressure sensing technology improves overall sensor performance. Below is a comparison of the 2 architectures:
The capacitive pressure sensor architectural advantage enables unparalleled levels of ultra-low noise and power. Below is a chart of noise and power of TDK’s ICP-101xx capacitive pressure family vs common industry pressure sensors at an output data rate of 1Hz:
The ICP-101xx barometric pressure sensor family has a noise floor under 0.4Pa-rms enabling pressure measurement differences of less than ±1 Pa, an accuracy enabling altitude measurement differentials as small as 5 cm, less than the height of a single stair step.
Capacitive pressure sensors are inherently stable over temperature since the technology is based on capacitance and not temperature sensitive piezoresistors. The ICP-101xx pressure sensor family achieves an industry leading temperature coefficient offset of ±0.5 Pa/°c making the device extremely stable over a wide temperature range.
TDK’s capacitive pressure sensors, with ultra-low noise, ultra-low power, and temperature stability bring a new level of performance enabling new use cases not possible with incumbent piezo resistive technology.
|Application||New Use Cases|
|Wearable||Improved motion tracking enabling activity identification and better caloric counting||Mobile||Improved path of travel identification (stairs, escalator, elevator) provides improved indoor map routing and travel times, E911|
|Drones||Improved altitude-hold and stability over a wide temp range enable a more stable flight control user experience|
|Datacom and Personal Inhalation Devices||Sub pascal noise floor enables low threshold and high accuracy air flow measurement in a low profile package|
|Security Systems||Measure vertical window displacement based on pressure instead of easily defeated accelerometers and reed switches|