STMicroelectronics LPS22DF MEMS Nano Pressure Sensor
Low-power and high-precision MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer
The STMicroelectronics LPS22DF is an ultra-compact piezoresistive absolute pressure sensor which functions as a digital output barometer. The LPS22DF provides lower power consumption, achieving lower pressure noise than its predecessor.
The LPS22DF comprises a sensing element and an IC interface which communicates over I²C, MIPI I3CSM or SPI interfaces from the sensing element to the application and supports a wide Vdd IO range for the digital interfaces as well. The sensing element, which detects absolute pressure, consists of a suspended membrane manufactured using a dedicated process developed by ST.
The pressure sensor by STMicroelectronics is available in a full-mold, holed LGA package (HLGA). The LPS22DF sensor is guaranteed to operate over a temperature range extending from -40 °C to +85 °C. The package is holed to allow external pressure to reach the sensing element.
LPS22DF Architecture Block Diagram
LPS22DF Application Hints
STMicroelectronics STEVAL-MKI224V1: LPS22DF Adapter Board
The STEVAL-MKI224V1 is an adapter board designed to facilitate the evaluation of MEMS devices in the LPS22DF product family. The board offers an effective solution for fast system prototyping and device evaluation directly within the user’s own application. STEVAL-MKI224V1 IMAGEThe STEVAL-MKI224V1 can be plugged into a standard DIL24 socket. The adapter provides the complete LPS22DF pinout and comes ready-to-use with the required decoupling capacitors on the VDD power supply line.
STEVAL-MKI224V1 Data Brief
The STEVAL-MKI109V3 motherboards support this adapter. They include a high-performance 32-bit microcontroller functioning as a bridge between the sensor and a PC. You can use the downloadable graphical user interface (Unico-GUI) or dedicated software routines for customized applications.
You can also plug a STEVAL-MKI224V1 board onto an X-NUCLEO-IKS01A3 expansion board using Unicleo-GUI.