TE Connectivity Sensor Solutions – MS5525DSO: Save Space with Fully Calibrated Pressure and Temperature Sensor in a Small Package / BLE Wireless Sensor Tag Demo V1.1

The MEAS MS5525DSO from TE Connectivity (TE) is a new generation of digital small outline pressure sensors with SPI and I2C bus interface designed for high volume OEM users.

The sensor module includes a pressure sensor and an ultra low power 24-bit ΔΣ ADC with internal factory calibrated coefficients. It provides a 24-bit digital pressure and temperature value and different operation modes that allow the user to optimize for conversion speed and current consumption. The MS5525DSO can be interfaced to virtually any microcontroller. The communication protocol is simple, without the need of programming internal registers in the device.

This new sensor module generation is based on leading MEMS technology and latest benefits from TE’s proven experience and know-how in high volume manufacturing of pressure modules, which have been widely used for over a decade.

The rugged engineered thermoplastic transducer is available in single and dual port configurations, and can measure absolute, gauge, compound, and differential pressure from 1psi to 30psi.


  • Integrated digital pressure sensor (24-bit ΔΣ ADC)
  • Fast conversion down to 1ms
  • Low power, 1μA (stand-by <0.15μA)
  • Supply voltage: 1.8V to 3.6V
  • Pressure range: 1psi to 30psi
  • I2C and SPI interface
  • Small outline IC package
  • Barbed pressure ports


  • CPAP
  • Ventilators and pneumatic control
  • Altitude and airspeed measurements
  • Gas flow sensing and valve control systems
  • HVAC monitoring and leak detection

BLE Wireless Sensor Tag Demo V1.1

The Sensor Tag Demo V1.1 reports humidity, temperature and barometric pressure through a wireless Bluetooth 4.0 smart link. It is based on TE’s MEAS low power digital component sensors HTU21D(F) for RH/T (datasheet HPC199) and MEAS ultra compact micro altimeter MS5637 (datasheet DA5637-02BA03).

Android application is available for free download from the Google Play Store and will turn your smartphone or tab to a display and datalog terminal. Refer to the WPC001 for installation guidelines and user manual.

An optional USB dongle is available to connect the Sensor tag to your personal laptop. Refer to the WPC002 for Windows application installation.

The tag has been design for an expected lifetime of 3 months on a standard CR2032 cell battery at the fastest acquisition rate of one point per second.


  • Bluetooth low energy tag
  • Humidity (0% to 100% RH)
  • Temperature (-20ºC to +85ºC)
  • Pressure (300 to 1200mBar)
  • Android and Windows PC compatible


  • HVAC
  • Weather stations
  • Datalogging
  • Altimeters
  • Smartphones and tab accessories

WPP100B001: BLE Sensor Tag Demo with free Android application from Google Play Store
WPP109B001: BLE Sensor Tag Demo plus USB dongle key for Windows PC application