MPL115A FREESCALE | Alldatasheet
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Technical content
Digital barometric pressure sensor Overview Freescale Semiconductor’s MPL115A series is a simple barometer with digital output (I 2C/SPI) for cost-sensitive applications. A MEMS pressure sensor with a conditioning IC provides accurate pressure measurement. The MPL115A is offered in a 5 x 3 x 1.2 mm LGA package for space constrained applications. This surface mount package is RoHS-compliant. The MPL115A is ideal for battery and solar powered applications with its low current consumption at 1 μA in sleep mode and 5 μA in active mode. The MPL115A enables altitude detection, weather changes and will increase data capacity in hard disk drives as well as providing absolute pressure measurement for industrial equipment. Target Applications
- Barometry (portable and desk-top)
- Altimeter
- Weather stations
- Hard disk drives (HDD)
- Health monitoring
- Cooling fan control
- Dead reckoning assistance
- GPS navigation assistance
- Wound management
- Security and safety
- Ambient pressure switch
- Leak detection
- Vacuum equipment MPL115A Block Diagrams MPL115A1 SPI Interface MPL115A2 I2C Interface Diff Amp Temp Sensor MUX ADC Temperature Pressure Coefficient Storage DIN GND VDD DOUT SHDN CS CAP SCLK ADDR ADDR ADDR ADDR ADDR SPI Interface Diff Amp Temp Sensor MUX ADC Temperature Pressure Coefficient Storage SDA GND VDD RST SHDN CAP SCL ADDR ADDR ADDR ADDR ADDR I2C Interface
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 Selector Guide Part Number Operating Supply Voltage Supply Current Pressure Range Accuracy Compensated Temperature Range Digital Interface Package MPL115A1T1 2.4–5.5V 5 μA 50–115 kPa ± 1 kPa -20ºC–+85ºC SPI 8-pin LGA MPL115A2T1 2.4–5.5V 5 μA 50–115 kPa ± 1 kPa -20ºC–+85ºC I2C 8-pin LGA Development Tools Part Number Description KITMPL115A1SPI Evaluation board that demonstrates the SPI communication protocol KITMPL115A2I2C Evaluation board that demonstrates the I 2C communication protocol DEMOAPEXSENSOR The APEX (Altitude Pressure EXperimental) board showcases how pressure sensors can be used to detect altitude at high resolution Documentation Document Number Title Description MPL115A1 SPI Digital Barometer Data Sheet MPL115A2 I2C Digital Barometer Data Sheet AN3785 Using Digital Barometric Pressure Sensors in Your Design Application note for I 2C and SPI interface board implementation AN3914 Modern Altimeter and Barometer System Using the MPL115A Application note that describes a modern altimeter and barometer system
Features
- Digital output options MPL115A1 for SPI applications MPL115A2 for I2C applications
- Low-profile 3 x 5 x 1.2 mm LGA package
- Low current consumption Sleep mode: 1 μA Active mode: 5 μA at one measurement per second
- Temperature and pressure coefficients available for temperature compensation
- Convenient pressure conversion in units of kilopascals (kPa)
- 50 to 115 kPa absolute pressure measurement range
- 1 kPa accuracy
- Operating temperature range from -40ºC to +105ºC
- 2.4 to 5.5 Volt power supply Benefits
- Digital output simplifies system design with direct interface to microcontroller
- Small package enables design on space 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.