SM7291 / SM7391 / SM7491
The SOIC pressure sensors in the SM7X91 series are analog/digital OEM sensors* with a new silicon sensing element and modern electronic signal conditioning unit. The integrated digital signal processor permits calibration and temperature compensation during production.
The fully calibrated SM7291/SM7391/SM7491 sensors are supplied in a standard SOIC16 package with two vertical pressure connectors for SMD assembly. Pressure-proportional information in I2C format or as an analog 0.5 – 4.5 V voltage signal acts as an output signal. SM7291/SM7391/SM7491 are autonomous sensors which do not require any additional circuitry.
These SOIC pressure sensors are suitable for reflow soldering and automatic assembly on a PCB.
The sensor is available in a relative SM7291 or differential SM7391 sensor version or as asymmetrical, bidirectional, differential pressure sensor SM7491.
Variants of SM7291/SM7391/SM7491
SM7291 relative pressure ranges: 0 – 0.07 / 0.29 psi
SM7391 differential pressure ranges:
P1: -0,29 – -0,07 psi and P2: 0,07 – 0,29 psi (the absolute values of P1 and P2 must be identical. Please see the datasheet.)
SM7491 bidirectional, asymmetrical pressure ranges:
P1: -0.29 – 0 and P2: 0 – 0.29 psi
Link to the pressure converter
AMSYS provides the SOIC sensors in the SM7X91 series as standard versions. The following specifications thereof can be customized, however.