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## MS5803-02BA Datasheet(PDF) 9 Page - TE Connectivity Ltd

 Part No. MS5803-02BA Description High resolution module, 20cm Download 19 Pages Scroll/Zoom 100% Maker TEC [TE Connectivity Ltd] Homepage http://www.te.com/usa-en/home.html Logo

## MS5803-02BA Datasheet(HTML) 9 Page - TE Connectivity Ltd

 9 / 19 page MS5803-02BAMiniature Altimeter ModuleSENSOR SOLUTIONS ///MS5803-02BA09/2015Page 9PRESSURE AND TEMPERATURE CALCULATIONFigure 2: Flow chart for pressure and temperature reading and software compensation.Size[1][bit]minmaxC1Pressure sensitivity | SENST1unsigned int 161606553546372C2Pressure offset | OFFT1unsigned int 161606553543981C3Temperature coefficient of pressure sensitivity | TCSunsigned int 161606553529059C4Temperature coefficient of pressure offset | TCOunsigned int 161606553527842C5Reference temperature | TREFunsigned int 161606553531553C6Temperature coefficient of the temperature | TEMPSENSunsigned int 161606553528165D1Digital pressure valueunsigned int 32240167772166465444D2Digital temperature valueunsigned int 32240167772168077636dTDifference between actual and reference temperature[2]dT= D2 - TREF = D2 - C5 * 28signed int 3225-1677696016777216682000= 20.00 °COFFOffset at actual temperature[3]OFF= OFFT1 + TCO * dT = C2 * 217 + (C4 * dT ) / 26signed int 6441-17179344900257694105605764707214SENSSensitivity at actual temperature[4]SENS= SENST1 + TCS * dT = C1 * 216 + (C3 * dT ) / 27signed int 6441-8589672450128847052803039050829110002= 1100.02 mbarNotes[1][2][3][4]min and max have to be definedmin and max have to be definedMaximal size of intermediate result during evaluation of variable120000100058PRecommendedvariable typeDescription | Equationsigned int 32Actual temperature (-40…85°C with 0.01°C resolution)TEMP= 20°C + dT * TEMPSENS = 2000 + dT * C6 / 223Read digital pressure and temperature datasigned int 32Temperature compensated pressure (10…1200mbar with0.01mbar resolution)P= D1 * SENS - OFF = (D1 * SENS / 221 - OFF) / 2 15min and max have to be definedConvert calibration data into coefficients (see bit pattern of W1 to W4)VariableExample /TypicalValueCalculate temperature compensated pressure8500-4000TEMP41StartMaximum values for calculation results:PMIN = 10mbar PMAX = 2000mbarTMIN = -40°C TMAX = 85°C TREF = 20°CRead calibration data (factory calibrated) from PROMRead digital pressure and temperature dataCalculate temperatureCalculate temperature compensated pressureDisplay pressure and temperature value