Sensors MPL115A Digital barometric pressure sensor Overview MPL115A Block Diagrams Freescale Semiconductor’s MPL115A series is a simple barometer with digital output (I2C/SPI) for cost-sensitive applications. A MEMS VDD pressure sensor with a conditioning IC provides ADDR accurate pressure measurement. The MPL115A Coefficient ADDR CAP Storage is offered in a 5 x 3 x 1.2 mm LGA package for Diff ADDR SHDN space constrained applications. This surface MPL115A1 Amp X ADDR Pressure ADC mount package is RoHS-compliant. The SPI ADDR Temperature MU Interface Temp MPL115A is ideal for battery and solar powered Sensor SCLK applications with its low current consumption SPI DIN Interface DOUT at 1 μA in sleep mode and 5 μA in active mode. CS GND The MPL115A enables altitude detection, weather changes and will increase data capacity in hard disk drives as well as providing absolute VDD pressure measurement for industrial equipment. ADDR Coefficient ADDR CAP Target Applications Storage Diff ADDR • Barometry (portable and desk-top) MPL115A2 Amp SHDN X ADDR Pressure • Altimeter I2C ADC ADDR Temperature Interface MU • Weather stations Temp Sensor SCL 2 • Hard disk drives (HDD) I C SDA Interface • Health monitoring RST • Cooling fan control GND • Dead reckoning assistance • GPS navigation assistance • Wound management • Security and safety • Ambient pressure switch • Leak detection • Vacuum equipment Features Selector Guide • Digital output options Operating Compensated Supply Pressure Digital Part Number Supply Accuracy Temperature Package MPL115A1 for SPI applications Current Range Interface Voltage Range MPL115A2 for I2C applications • Low-profile 3 x 5 x 1.2 mm LGA package MPL115A1T1 2.4–5.5V 5 μA 50–115 kPa ± 1 kPa -20ºC–+85ºC SPI 8-pin LGA • Low current consumption MPL115A2T1 2.4–5.5V 5 μA 50–115 kPa ± 1 kPa -20ºC–+85ºC I2C 8-pin LGA Sleep mode: 1 μA Active mode: 5 μA at one measurement Development Tools per second Part Number Description • Temperature and pressure coefficients available for temperature compensation KITMPL115A1SPI Evaluation board that demonstrates the SPI communication protocol • Convenient pressure conversion in units of KITMPL115A2I2C Evaluation board that demonstrates the I2C communication protocol kilopascals (kPa) The APEX (Altitude Pressure EXperimental) board showcases how pressure • 50 to 115 kPa absolute pressure DEMOAPEXSENSOR sensors can be used to detect altitude at high resolution measurement range • 1 kPa accuracy Documentation • Operating temperature range from Document Number Title Description -40ºC to +105ºC • 2.4 to 5.5 Volt power supply MPL115A1 SPI Digital Barometer Data Sheet MPL115A2 I2C Digital Barometer Data Sheet Benefits Using Digital Barometric Pressure Application note for I2C and SPI interface board • Digital output simplifies system design with AN3785 Sensors in Your Design implementation direct interface to microcontroller Modern Altimeter and Barometer Application note that describes a modern • Small package enables design on space AN3914 System Using the MPL115A altimeter and barometer system constrained PCB • Low power consumption for battery and solar powered applications Freescale is a leading provider of pressure, inertial and touch sensors and has offered MEMS-based sensors for over 30 years. The sensor ICs complement Freescale’s broad portfolio of ZigBee® technology, microcontrollers, microprocessors, digital signal processors, analog ICs and development tools to offer system solutions to customers. Learn More: For current information about Freescale products and documentation, please visit www.freescale.com/pressure. Freescale and the Freescale logo are trademarks or registered trademarks of Freescale Semiconductor, Inc. in the U.S. and other countries. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc. 2009 Document Number: MPL115AFS REV 1.