XENSIV™ KP253 digital barometric air pressure (BAP) sensor for high-accuracy pressure sensing The Infineon KP253 is a miniaturized digital barometric air pressure sensor with a 12-bit digital value output via SPI interface. It includes an integrated temperature sensor. The diagnostic mode allows testing of sensor cells and signal path with a simple SPI command. It's packaged in a "green" SMD housing and suitable for automotive, industrial, and consumer applications.