1 General description
The FXPS7400D4 high-performance, high-precision barometric absolute pressure (BAP) sensor consists of a compact capacitive micro-electro-mechanical systems (MEMS) device coupled with a digital integrated circuit (IC) producing a fully calibrated digital output.
The sensor is based on NXP's high-precision capacitive pressure cell technology. The architecture benefits from redundant pressure transducers as an expanded quality measure. This sensor delivers highly accurate pressure and temperature readings through either a serial peripheral interface (SPI) or an inter-integrated circuit (I2C) interface. Furthermore, the sensor employs an on-demand digital self-test for the digital IC and the MEMS transducers. The sensor operates over a pressure range of 20 kPa to 400 kPa and over a wide temperature range of −40 ºC to 130 ºC.
The sensor comes in an industry-leading 4 mm x 4 mm x 1.98 mm, restriction of hazardous substances (RoHS) compliant, high power quad flat no lead (HQFN) package[1] suitable for small PCB integration. Its AEC-Q100[2] compliance, high accuracy, reliable performance, and high media resistivity make it ideal for use in automotive, industrial, and consumer applications.

2 Features and benefits
• Absolute pressure range: 20 kPa to 400 kPa
• Operating temperature range: –40 °C to 130 °C
• Pressure transducer and digital signal processor (DSP)
– Digital self-test
• I2C compatible serial interface
– Client mode operation
– Standard mode, Fast mode, and Fast-mode Plus support
• 32-bit SPI compatible serial interface
– Sensor data transmission commands
– 12-bit data for absolute pressure
– 8-bit data for temperature
– 2-bit basic status and 2-bit detailed status fields
– 3, 4, or 8-bit configurable CRC
• Capacitance to voltage converter with anti-aliasing filter
• Sigma delta ADC plus sinc filter
• 800 Hz or 1000 Hz low-pass filter for absolute pressure
• Lead-free, 16-pin HQFN, 4 mm x 4 mm x 1.98 mm package

3 Applications
3.1 Automotive
• Engine management digital MAP and BAP
• Small engine control
3.2 Industrial
• Compressed air
• Manufacturing line control
• Gas metering
• Weather stations
3.3 Medical/Consumer
• Blood pressure monitor
• Medicine dispensing systems
• White goods