New Product Introduction

Infineon KP256

KP256 - miniaturized digital barometric air pressure sensor IC based on a capacitive principle

Top view of Infineon's KP256 Digital Barometric Air Pressure Sensor IC

The KP256 is a miniaturized Digital Barometric Air Pressure Sensor IC based on a capacitive principle. It is surface micromachined with a monolithic integrated signal conditioning circuit implemented in BiCMOS technology. The sensor converts a pressure into a 10-bit digital value and sends the information via the SPI interface. In addition, a temperature sensor is integrated on chip. Based on the received SPI command, the 10-bit temperature information will be transmitted via the SPI interface. A special reliability feature is the integrated diagnostic mode, which allows testing the sensor cells as well as the signal path. This diagnosis can be simply triggered with a SPI command. The chip is packaged in a “green” SMD housing. The sensor has been primarily developed for measuring barometric air pressure, but can also be used in other application fields. The high accuracy, high sensitivity and reliability features of the device makes it a perfect fit for advanced automotive applications as well as in industrial and consumer applications.



  • High accuracy pressure sensing (± 1.0 kPa)
  • Real 10-bit pressure resolution
  • Integrated temperature sensor
  • Real 10-bit temperature resolution
  • Power-down mode for reduced power consumption
  • Self diagnosis features
  • “Green” 8 pin SMD housing
  • Automotive qualified​


  • Automotive applications
  • Industrial control
  • Consumer applications
  • Medical applications
  • Weather stations
  • Altimeters


Parametrics KP256
Accuracy +/-1.0kPa
Interfaces SPI
Pressure Range min / max 60.0 kPa / 165.0 kPa
Supply Voltage 5.0 V
Temperature min / max -40.0 °C / 125.0 °C @ 70.0 µA 
Operating Voltage min / max 4.0 V / 35.0 V


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