The MS5803 are OEM digital sensor modules which can measure the absolute pressure and high-resolution temperature (24-bit ADC). The pressure value has a resolution of 0.012 mbar and the temperature value is 0.01 ° C. The pressure sensor modules MS5803 consist of a thick-film hybrid (substrate), on which a piezoresistive absolute pressure measuring cell and an Application Specific IC (ASIC) are applied. (Kera microsubstrate: 6.4 x 6.2 mm2). The supply voltage range is between 1.8 and 3.6 V.
The module converts the measured pressure- and temperature-dependent signals of the measuring cell cyclically into a 16-bit data word. In addition, six individual coefficients are stored in the module, which are individually determined and stored after production. With the help of these coefficients and the actual measured values, the pressure and temperature measurement can be calculated very precisely using a simple algorithm in an external microprocessor. An I²C interface / SPI interface is used for serial communication with the microprocessor. The conversion time and thus the reaction time and the power consumption during the measurement can also be set via these digital interfaces.
The total error lies in the temperature interval of -25 and 85 ° C at ± 1 mbar and corresponds to 0.1% FS. Particularly important for demanding measuring tasks is the stability, which is indicated with 1 mbar / year = 0.1% FS. This means that the signal of the sensor can change in max. 1% FS. With the high resolution, the exceptional stability and the low error, the MS5803 is a precise pressure measuring instrument.
The rugged design of the sensor allows reflow mounting and makes automatic assembly possible.
The MS5803 is available for the following pressure measurement ranges: 10-1300mbar (for barometric measurement), 10-2,000 mbar, 0-5, 0-7, 0-14, 0-30 bar.
Typical application areas are: mobile altimeter and mobile barometric measuring systems, navigation devices, weather stations, sportswatches, devices for position control and personnel monitoring, diving computers, etc.
For more information visit: http://www.amsys.de