飞思卡尔MP3V5050V压力传感方案

飞思卡尔(Freescale)公司的MP3V5050V是集成了双极运算放大器和薄膜电阻网络的压力传感器件,能提供高输出信号和温度补偿,单电源2.7V到3.3V工作,检测的压力范围从0到7 PSI (50 kPa),可以用在真空泵的压力监测.本文介绍了MP3V5050V的主要特性,方框图以及传感器信号输出和压力差的关系与典型应用电路图.

The MP3V5050V sensor integrates on-chip, bipolar op amp circuitry and thin film resistor networks to provide a high output signal and temperature compensation. The small form factor and high reliability of on-chip integration make the Freescale Semiconductor, Inc. pressure sensor a logical and economical choice for the system designer.

The MP3V5050V piezoresistive transducer is a state-of-the-art, monolithic, signal conditioned, silicon pressure sensor. This sensor combines advanced micromachining techniques, thin film metallization, and bipolar semiconductor processing to provide an accurate, high level analog output signal that is proportional to applied pressure.
图1shows a block diagram of the internal circuitry integrated on a pressure sensor chip.

MP3V5050V主要特性:
Supply voltage 2.7 V to 3.3 V
Typical full scale span 2.7 V
0 to 7 PSI (50 kPa) pressure range
Vacuum version available in MP3V5050V
2.5% maximum error over 0° to 85°C
Temperature compensated over –40° to +125°C
Ideally suited for microprocessor or microcontroller-based systems
Patented silicon shear stress strain gauge
Multiple porting options available
Durable thermoplastic surface mount package
Available in rails or tape-in-reel shipping options

MP3V5050V典型应用:
Vacuum Pump Monitoring



图1. MP3V5050V方框图



图2.MP3V5050V输出和压力差的关系



图3.MP3V5050V典型应用电路