Pressure Converter
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Medium Pressure Digital Sensor (SM4X21)

The SM4X21 Series is a digital, medium pressure MEMS sensor family offering state-of-the-art pressure transducer technology and CMOS mixed signal processing technology to produce a digital, fully conditioned, multi-order pressure and temperature compensated sensor in JEDEC standard SOIC-16 package with a dual vertical porting option. It is available in both compound gage or differential pressure configurations. With the dual porting, a vacuum-gage measurement is possible to minimize altitude errors due to changes in ambient pressure.
Combining the pressure sensor with a signal-conditioning ASIC in a single package simplifies the use of advanced silicon micro-machined pressure sensors. The pressure sensor can be mounted directly on a standard printed circuit board and a high level, calibrated pressure signal can be acquired from the digital interface. This eliminates the need for additional circuitry, such as a compensation network or microcontroller containing a custom correction algorithm.

Key Attributes
Product SeriesSM4X21
Pressure Range2.5-14.9 PSI
Pressure TypeGauge,
Differential,
Asymmetric
Comp. Temp. Range-20°C to +85°C
Package TypeSOIC-16
Port TypeDual Vertical,
Dual Horizontal
Digital InterfaceI2C, 14 bit
Supply Voltage3.3 V/5 V
Accuracy1%-FS