MS563702BA03-50

MS5637-02BA03 Low Voltage Barometric Pressure Sensor SPECIFICATIONS          QFN package 3 x 3 x 0.9 mm3 High-resolution module, 13 cm Supply voltage: 1.5 to 3.6 V Fast conversion down to 0.5 ms Low power, 0.6 µA (standby ≤ 0.1 µA at 25°C) Integrated digital pressure sensor (24 bit ΔΣ ADC) Operating range: 300 to 1200 mbar, -40 to +85 °C I2C 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 ΔΣ 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 MS5637 can be interfaced to any microcontroller with I2C-bus interface. The communication protocol is simple, without the need of programming internal registers in the device. Small dimensions of 3 x 3 x 0.9 mm 3 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 06/2017 Page 1 MS5637-02BA03 Low Voltage Barometric Pressure Sensor FEATURES FIELD OF APPLICATION Smart-phones Tablet PCs Personal navigation devices TECHNICAL DATA Sensor Performances (VDD = 3 V) Pressure Min Typ Max Unit 2000 mbar Maximum Range 10 ADC 24 0.11 / 0.062/ 0.039 / 0.028 / 0.021 / 0.016 Resolution (1) Error band at 25°C, -2 +2 300 to 1200 mbar Error band, -20°C to + 85°C, -4 +4 300 to 1200 mbar (2) 0.5 / 1.1 / 2.1 / 4.1 / Response time (1) 8.22 / 16.44 Long term stability ±1 Temperature Min Range -40 Resolution Typ mbar mbar mbar ms mbar/yr Max Unit +85 °C >1]) & 0x00FF); else n_rem ^= (unsigned short) (n_prom[cnt>>1]>>8); for (n_bit = 8; n_bit > 0; n_bit--) { if (n_rem & (0x8000)) n_rem = (n_rem 12) & 0x000F); // final 4-bit reminder is CRC code return (n_rem ^ 0x00); } SENSOR SOLUTIONS /// MS5637-02BA03 06/2017 Page 12 MS5637-02BA03 Low Voltage Barometric Pressure Sensor APPLICATION CIRCUIT The MS5637 is a circuit that can be used in conjunction with a microcontroller in mobile altimeter applications. Figure 12: Typical application circuit SENSOR SOLUTIONS /// MS5637-02BA03 06/2017 Page 13 MS5637-02BA03 Low Voltage Barometric Pressure Sensor PIN CONFIGURATION Pin Name Type Function 1 VDD P Positive supply voltage 2 SDA I/O I2C data 3 SCL I I2C clock 4 GND I Ground DEVICE PACKAGE OUTLINE Notes: (1) Dimensions in mm (2) General tolerance: ±0.1 Figure 13: MS5637 package outline SENSOR SOLUTIONS /// MS5637-02BA03 06/2017 Page 14 MS5637-02BA03 Low Voltage Barometric Pressure Sensor RECOMMENDED PAD LAYOUT Pad layout for bottom side of the MS5637 soldered onto printed circuit board. Reserved area: Please do not route tracks between pads Figure 14: MS5637 pad layout SHIPPING PACKAGE SENSOR SOLUTIONS /// MS5637-02BA03 06/2017 Page 15 MS5637-02BA03 Low Voltage Barometric Pressure Sensor MOUNTING AND ASSEMBLY CONSIDERATIONS SOLDERING Please refer to the application note AN808 available on our website for all soldering issues. MOUNTING The MS5637 can be placed with automatic Pick & Place equipment using vacuum nozzles. It will not be damaged by the vacuum. Due to the low stress assembly the sensor does not show pressure hysteresis effects. It is important to solder all contact pads. CONNECTION TO PCB The package outline of the module allows the use of a flexible PCB for interconnection. This can be important for applications in watches and other special devices. CLEANING The MS5637 has been manufactured under clean-room conditions. It is therefore recommended to assemble the sensor under class 10’000 or better conditions. Should this not be possible, it is recommended to protect the sensor opening during assembly from entering particles and dust. To avoid cleaning of the PCB, solder paste of type “noclean” shall be used. Cleaning might damage the sensor! ESD PRECAUTIONS The electrical contact pads are protected against ESD up to 2 kV HBM (human body model). It is therefore essential to ground machines and personnel properly during assembly and handling of the device. The MS5637 is shipped in antistatic transport boxes. Any test adapters or production transport boxes used during the assembly of the sensor shall be of an equivalent antistatic material. DECOUPLING CAPACITOR Particular care must be taken when connecting the device to the power supply. A 100nF minimum ceramic capacitor must be placed as close as possible to the MS5637 VDD pin. This capacitor will stabilize the power supply during data conversion and thus, provide the highest possible accuracy. SENSOR SOLUTIONS /// MS5637-02BA03 06/2017 Page 16 MS5637-02BA03 Low Voltage Barometric Pressure Sensor TYPICAL PERFORMANCE CHARACTERISTICS PRESSURE AND TEMPERATURE ERROR VERSUS PRESSURE AND TEMPERATURE (TYPICAL VALUES) PRESSURE AND TEMPERATURE ERROR VERSUS POWER SUPPLY (TYPICAL VALUES) SENSOR SOLUTIONS /// MS5637-02BA03 06/2017 Page 17 MS5637-02BA03 Low Voltage Barometric Pressure Sensor ORDERING INFORMATION Part Number / Art. Number Product Delivery Form MS563702BA03-50 Micro Altimeter Module 3x3mm Tape & Reel NORTH AMERICA EUROPE ASIA Measurement Specialties, Inc., a TE Connectivity company Tel: 800-522-6752 Email: customercare.frmt@te.com Measurement Specialties (Europe), Ltd., a TE Connectivity Company Tel: 800-440-5100 Email: customercare.bevx@te.com Measurement Specialties (China) Ltd., a TE Connectivity company Tel: 0400-820-6015 Email: customercare.shzn@te.com TE.com/sensorsolutions Measurement Specialties, Inc., a TE Connectivity company. Measurement Specialties, TE Connectivity, TE Connectivity (logo) and EVERY CONNECTION COUNTS are trademarks. All other logos, products and/or company names referred to herein might be trademarks of their respective owners. The information given herein, including drawings, illustrations and schematics which are intended for illustration purposes only, is believed to be reliable. However, TE Connectivity makes no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity‘s obligations shall only be as set forth in TE Connectivity‘s Standard Terms and Conditions of Sale for this product and in no case will TE Connectivity be liable for any incidental, indirect or consequential damages arising out of the sale, resale, use or misuse of the product. Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application. © 2015 TE Connectivity Ltd. family of companies All Rights Reserved. SENSOR SOLUTIONS /// MS5637-02BA03 06/2017 Page 18