MS5611-01BA03 Variometer Module, with stainless steel cap DA5611-01BA03_008 Jun 07, 2011 000056111624 ECN1506 1/20 High resolution module, 10 cm Fast conversion down to 1 ms Low power, 1 A (standby 0.15 A) QFN package 5.0 x 3.0 x 1.0 mm3 Supply voltage 1.8 to 3.6 V Integrated digital pressure sensor (24 bit ADC) Operating range: 10 to 1200 mbar, -40 to +85 C I2C and SPI interface up to 20 MHz No external components (Internal oscillator) Excellent long term stability DESCRIPTION The MS5611-01BA is a new generation of high resolution altimeter sensors from MEAS Switzerland with SPI and I2C bus interface. It is optimized for altimeters and variometers with an altitude resolution of 10 cm. The sensor module includes a high linearity pressure sensor and an ultra low power 24 bit ADC with internal factory calibrated coefficients. It provides a precise digital 24 Bit pressure and temperature value and different operation modes that allow the user to optimize for conversion speed and current consumption. A high resolution temperature output allows the implementation of an altimeter/thermometer function without any additional sensor. The MS5611-01BA can be interfaced to virtually any microcontroller. The communication protocol is simple, without the need of programming internal registers in the device. Small dimensions of only 5.0 mm x 3.0 mm and a height of only 1.0 mm allow for integration in mobile devices. This new sensor module generation is based on leading MEMS technology and latest benefits from MEAS Switzerland proven experience and know-how in high volume manufacturing of altimeter modules, which have been widely used for over a decade. The sensing principle employed leads to very low hysteresis and high stability of both pressure and temperature signal. FEATURESFIELD OF APPLICATION TECHNICAL DATA Mobile altimeter / barometer systems Sensor Performances (VDD = 3 V) Bike computers Pressure Min Typ Max Unit Variometers Range 10 1200 mbar Height sensing for medical alarms ADC 24 bit Indoor navigation Resolution (1) 0.065 / 0.042 / 0.027 / 0.018 / 0.012 mbar Accuracy 25 C, 750 mbar -1.5 +1.5 mbar Error band, -20 C to +85 C, 450 to 1100 mbar (2) -2.5 +2.5 mbar Response time (1) 0.5 / 1.1 / 2.1 / 4.1 / 8.22 ms Long term stability -1 mbar/yr Temperature Min Typ Max Unit Range -40 +85 C Resolution 0.01 C Accuracy -0.8 +0.8 C FUNCTIONAL BLOCK DIAGRAM VDDGNDPSSCLKSDOSDI/SDAMeas. MUXADCDigital InterfaceMemory (PROM) 128 bitsSENSORSGND+IN-INdig. FilterSensor Interface ICPGACSBNotes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096 (2) With autozero at one pressure point MS5611-01BA03 Variometer Module, with stainless steel cap DA5611-01BA03_008 Jun 07, 2011 000056111624 ECN1506 2/20 PERFORMANCE SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Parameter Symbol Conditions Min. Typ. Max Unit Supply voltage VDD -0.3 +4.0 V Storage temperature TS -40 +125 C Overpressure Pmax 6 bar Maximum Soldering Temperature Tmax 40 sec max 250 C ESD rating Human Body Model -4 +4 kV Latch up JEDEC standard No 78 -100 +100 mA ELECTRICAL CHARACTERISTICS Parameter Symbol Conditions Min. Typ. Max Unit Operating Supply voltage VDD 1.8 3.0 3.6 V Operating Temperature T -40 +25 +85 C Supply current (1 sample per sec.) IDD OSR 4096 2048 1024 512 256 12.5 6.3 3.2 1.7 0.9 A Peak supply current during conversion 1.4 mA Standby supply current at 25 C 0.02 0.14 A VDD Capacitor From VDD to GND 100 nF ANALOG DIGITAL CONVERTER (ADC) Parameter Symbol Conditions Min. Typ. Max Unit Output Word 24 bit Conversion time tc OSR 4096 2048 1024 512 256 7.40 3.72 1.88 0.95 0.48 8.22 4.13 2.08 1.06 0.54 9.04 4.54 2.28 1.17 0.60 ms MS5611-01BA03 Variometer Module, with stainless steel cap DA5611-01BA03_008 Jun 07, 2011 000056111624 ECN1506 3/20 PERFORMANCE SPECIFICATIONS (CONTINUED) PRESSURE OUTPUT CHARACTERISTICS (VDD = 3 V, T = 25 C UNLESS OTHERWISE NOTED) Parameter Conditions Min. Typ. Max Unit Operating Pressure Range Prange Full Accuracy 450 1100 mbar Extended Pressure Range Pext Linear Range of ADC 10 1200 mbar Total Error Band, no autozero at 25 C, 700.1100 mbar at 0.50 C, 450.1100 mbar at -20.85 C, 450.1100 mbar at -40.85 C, 450.1100 mbar -1.5 -2.0 -3.5 -6.0 +1.5 +2.0 +3.5 +6.0 mbar Total Error Band, autozero at one pressure point at 25 C, 700.1100 mbar at 10.50 C, 450.1100 mbar at -20.85 C, 450.1100 mbar at -40.85 C, 450.1100 mbar -0.5 -1.0 -2.5 -5.0 +0.5 +1.0 +2.5 +5.0 mbar Maximum error with supply voltage VDD = 1.8 V 3.6 V -2.5 +2.5 mbar Long-term stability -1 mbar/yr Recovering time after reflow (1) 7 days Resolution RMS OSR 4096 2048 1024 512 256 0.012 0.018 0.027 0.042 0.065 mbar (1) Time to recovering at least 66% of the reflow impact TEMPERATURE OUTPUT CHARACTERI