The SM11X1 series barometric absolute pressure sensors are compact OEM sensors* for measuring the barometric air pressure in the range of 150 – 1800 mbar (SM1111A: 150 – 1’150 mbar, SM1111B: 600 – 1’650 mbar, SM1131: 400 – 1’800 mbar, SM1171: 400 – 1’150 mbar). They offer a 16-bit signal processing and an accuracy of 1 mbar in the temperature range of 0 – 80 ° C.
The operating temperature range of -40 – 125 ° C is very broad and suitable for versatile use with a very good accuracy of 2 mbar.
The integrated ASIC enables calibration and temperature compensation during production. Alternatively, a ratiometric analog output or digital I²C or SPI outputs are available. The digital ones output not only the pressure but also the temperature information as a digital value.
The fully balanced SM11X1 are offered in a standardized SOIC8 package for automated SMD mounting. The SOIC pressure sensors are self-sufficient and do not require additional circuitry.
The barometric air pressure (BAP) sensors are available in three different types with different electrical outputs. The supply voltage is either 3.3 V or 5 V. The power consumption of the digital versions can be lowered by command from 5 mA to 10 μA in sleep mode.
Variants of the SM11X1:
SM1111: Pressure range: 150 – 1’150 mbar; 3.3V or 5V supply; ratiometric analog output
SM1111: Pressure range: 600 – 1’650 mbar; 5V supply; ratiometric analog output
SM1131: Pressure range: 400 – 1’800 mbar; 3.3V or 5V supply; digital I²C signal
SM1171: Pressure range: 400 – 1’150 mbar; 3.3V or 5V supply; digital SPI signal
Link to the pressure converter
The SM11X1 series barometric pressure sensors are offered by AMSYS as standard products both in tubes and as tape & reel.
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