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Description
- Pololu LPS22DF Digital Barometer Sensor w/ Integrated Voltage Regulator
- High-precision pressure sensing
- Altitude conversion capable
- Dual I²C/SPI communication
- Embedded temperature compensation
- User-friendly design for easy integration
The Pololu LPS22DF Digital Barometer Sensor w/ Voltage Regulator is designed to measure atmospheric pressures ranging from 260 mbar to 1260 mbar with a high degree of accuracy, achieving absolute accuracy down to ±0.5 mbar. It is capable of converting pressure measurements to altitudes, making it suitable for a variety of applications. The sensor is equipped with both I²C/I3C and SPI interfaces for communication.
This compact carrier board for the ST LPS22DF MEMS absolute pressure sensor is designed to facilitate the use of the sensor for students and hobbyists. It includes a 3 V linear regulator and level shifters to accommodate a wide input voltage range, ensuring compatibility with various microcontroller voltages. The board comes fully populated with surface-mounted components, including the LPS22DF sensor itself.
The LPS22DF sensor is notable for its embedded temperature compensation and a host of configurable options. These options include selectable averaging, multiple output data rates, FIFO operating modes, and a programmable external interrupt signal. The sensor's pressure output is characterized by low RMS noise and high accuracy, and it supports data output for both pressure and temperature, which can be utilized for altimetry purposes.
In comparison to its predecessor, the LPS22DF offers enhanced accuracy, reduced noise, and a higher maximum output rate. The flexibility in configuring averaging allows for optimization between power consumption and noise reduction. Although pin-compatible with previous pressure sensor carriers, the LPS22DF has different configuration registers, necessitating code adjustments for compatibility.
The carrier board's low-dropout linear voltage regulator ensures the sensor is adequately powered, and the integrated level-shifting circuit simplifies interfacing with different logic voltage levels. The board's design, with standard 0.1" pin spacing, is intended to be user-friendly, allowing for easy integration into standard solderless breadboards and perfboards.
Please note that it is recommended to thoroughly review the LPS22DF datasheet before using this product. The sensor operates at voltages below 3.6 V, which may require special consideration when interfacing with microcontrollers operating at higher voltages.
- 1x Pololu LPS22DF Digital Barometer Sensor w/ Voltage Regulator
- 1x 1x8 strip of 0.1-inch header pins
- 1x 1x8 strip of 0.1-inch right-angle header pins
The board includes one mounting hole compatible with #2 and M2 screws (screws not included). You have the option to solder the header strip of your choice to the board for use with custom cables or solderless breadboards, or you can solder wires directly to the board for more compact installations.
- 0.4 x 0.8 x 0.1 inch (L x W x H)
- Operating voltage: 1.8 V to 5 V
- Supply current: 1 mA
- Output format (I²C/SPI): 24-bit pressure reading (4096 LSb/Mbar)
- Sensitivity range: 260 Mbar to 1260 Mbar (26 kPa to 126 kPa)
- Weight without header pins: 0.5 g