Low Pressure Digital Sensor (SM7X31)

The SM7X31 Series is a low pressure MEMS sensor family offering state-of-the-art pressure transducer technology and CMOS mixed signal processing technology to produce a 16-bit Digital output, fully conditioned, multi-order pressure and temperature compensated outputs. All SM7X31 sensors provide a 1%FS digital output accuracy. This series provides JEDEC standard SOIC-16 package with a dual vertical or horizontal ports  options. With the dual porting, a reference measurement is possible to minimize errors due to changes in ambient pressure. For a smaller footprint we offer the JEDEC SOIC-10 package option with one port. The SM7X31 Series is available in gauge, differential and asymmetric differential configurations.


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.

Customer-specified   pressure   ranges   and   supply   voltages    are available.
The SM7231, SM7331 and SM7431 series are shipped in sticks or tape & reel.

Key Attributes 
Product SeriesSM7X31
Pressure Range0.15-0.29 PSI
Pressure TypeGauge,
Differential,
Asymmetric
Comp. Temp. Range-20°C to +85°C
Package and Port TypeSOIC-16 Dual Vertical,
SOIC-16 Dual Horizontal,
SOIC-10 Single Vertical
Digital InterfaceI2C, 16 bit
Supply Voltage3.3 V/5 V
Accuracy1%-FS
04/25/2019 CET

Disclaimer

Contact SMI for part availability. Silicon Microstructures, Inc. Warranty & Disclaimer / Terms & Conditions apply.

Part Number Data Sheet Pressure Type Pmax (PSI) Calibrated Pmax Output Type Package Type Characteristics Request
SM7231-BBE-S-002-001 Gauge 0.2901 2 kPa Digital (I²C) SOIC-16 Horizontal

Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks

SM7231-BCE-S-002-001 Gauge 0.2901 2 kPa Digital (I²C) SOIC-16 Vertical

Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks

SM7331-BCE-S-001-000 Differential 0.145 1 kPa Digital (I²C) SOIC-16 Vertical

Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks

SM7331-BCE-S-001-001 Differential 0.145 1 kPa Digital (I²C) SOIC-16 Vertical

Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks
Supply Voltage 5V

SM7331-BCE-S-002-000 Differential 0.2901 2 kPa Digital (I²C) SOIC-16 Vertical

Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks

SM7331-BCE-S-002-001 Differential 0.2901 2 kPa Digital (I²C) SOIC-16 Vertical

Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks
Supply Voltage 5V

SM7331-BCE-S-010-000 Differential 0.145 10 mbar Digital (I²C) SOIC-16 Vertical

Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks

SM7331-BCE-S-020-000 Differential 0.29 20 mbar Digital (I²C) SOIC-16 Vertical

Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks

SM7331-BCE-S-600-000 Differential 0.087 600 Pa Digital (I²C) SOIC-16 Vertical

Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks

SM7431-BCE-S-001-000 Asymmetric 0.145 1 kPa Digital (I²C) SOIC-16 Vertical

Calibrated Pmin -0.8 kPa
Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks

SM7431-BCE-S-002-000 Asymmetric 0.3698 2.55 kPa Digital (I²C) SOIC-16 Vertical

Calibrated Pmin -0.25 kPa
Comp. Temp. -20˚C to +85˚C
Accuracy 1%FS
Shipped in Sticks