MS5637-02BA03 Low Voltage Barometric Pressure Sensor SPECIFICATIONS 3 QFN package 3 x 3 x 0.9 mm High-resolution module, 13 cm Supply voltage: 1.5 to 3.6 V Fast conversion down to 0.5 ms Low power, 0.6 A (standby 0.1 A at 25C) Integrated digital pressure sensor (24 bit ADC) Operating range: 300 to 1200 mbar, -40 to +85 C 2 I C interface No external components (internal oscillator) The MS5637 is an ultra-compact micro altimeter. It is optimized for altimeter and barometer applications in Smart-phones and Tablet PCs. The altitude resolution at sea level is 13 cm of air. 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. 2 The MS5637 can be interfaced to any microcontroller with I C-bus interface. The communication protocol is simple, without the need of programming internal registers in the device. Small dimensions 3 of 3 x 3 x 0.9 mm allow the 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 has 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 ///MS5637-02BA03 Page 1 06/2017 MS5637-02BA03 Low Voltage Barometric Pressure Sensor FEATURES FIELD OF APPLICATION Smart-phones Tablet PCs Personal navigation devices TECHNICAL DATA Sensor Performances (V = 3 V) DD Pressure Min Typ Max Unit Maximum Range 10 2000 mbar ADC 24 bit 0.11 / 0.062/ 0.039 Resolution (1) / 0.028 / 0.021 / mbar 0.016 Error band at 25C, -2 +2 mbar 300 to 1200 mbar Error band, -20C to + 85C, -4 +4 mbar 300 to 1200 mbar (2) 0.5 / 1.1 / 2.1 / 4.1 / Response time (1) ms 8.22 / 16.44 Long term stability 1 mbar/yr Temperature Min Typ Max Unit Range -40 +85 C Resolution <0.01 C Accuracy at 25C -1 +1 C Notes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096 / 8192 (2) With auto-zero at one pressure point FUNCTIONAL BLOCK DIAGRAM VDD 2 +IN I C Bus SENSOR SDA Interface dig. ADC -IN Filter SCL Sensor Memory (PROM) Interface IC 112 bits SGND GND 06/2017 SENSOR SOLUTIONS /// MS5637-02BA03 Page 2