1 General description

The FXPS7250D4 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 250 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 250 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

• Comfort seating

• Small engine control

• Liquid propane gas (LPG) or compressed natural gas (CNG) engine management

3.2 Industrial

• Compressed air

• Manufacturing line control

• Gas metering

• Weather stations

3.3 Medical/Consumer

• Blood pressure monitor

• Medicine dispensing systems

• White goods

FXPS7250DI4T1属于传感器，变送器 > 压力传感器、变送器。恩智浦半导体公司制造生产的FXPS7250DI4T1压力传感器、变送器压力传感器或变送器用于检测并响应器件上作用力的存在或量变。压力类型有绝对压力、复合压力、差压、表压、密封表压、开关、真空和排气表压，工作压力为 -100 PSI (-689.48 kPa) 至 20000 PSI (137895.15 kPa)。