MS5611-01BA03 Barometric Pressure Sensor, with stainless steel cap SPECIFICATIONS High resolution module, 10 cm Fast conversion down to 1 ms Low power, 1 A (standby < 0.15 A) 3 QFN package 5.0 x 3.0 x 1.0 mm 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 2 I C and SPI interface up to 20 MHz No external components (Internal oscillator) Excellent long-term stability The MS5611-01BA is a new generation of high resolution 2 altimeter sensors from MEAS Switzerland with SPI and I C bus interface. This barometric pressure sensor 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. SENSOR SOLUTIONS ///MS5611-01BA03 06/2017 Page 1 MS5611-01BA03 Barometric Pressure Sensor, with stainless steel cap FEATURES FIELD OF APPLICATION Mobile altimeter / barometer systems Bike computers Variometers Height sensing for medical alarms Indoor navigation TECHNICAL DATA Sensor Performances (V = 3 V) DD Pressure Min Typ Max Unit Range 10 1200 mbar ADC 24 bit 0.065 / 0.042 / 0.027 Resolution (1) mbar / 0.018 / 0.012 Accuracy 25C, 750 mbar -1.5 +1.5 mbar Error band, -20C to +85C, -2.5 +2.5 mbar 450 to 1100 mbar (2) 0.5 / 1.1 / 2.1 / 4.1 / Response time (1) ms 8.22 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 Notes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096 (2) With autozero at one pressure point FUNCTIONAL BLOCK DIAGRAM VDD PS Meas. MUX CSB +IN Digital SENSOR SDI/SDA Interface SDO dig. PGA ADC Filter -IN SCLK Memory Sensor (PROM) Interface IC 128 bits SGND GND 06/2017 SENSOR SOLUTIONS ///MS5611-01BA03 Page 2