Rev 3, 08/2009
Miniature SPI Digital Barometer
The MPL115A1 is an absolute pressure sensor with digital output for low cost
applications. A miniature 5 x 3 x 1.2 mm LGA package ideally suits it for portable
electronics and space constrained applications. Low current consumptions of
5 μA during Active mode and 1 μA during Shutdown (Sleep) mode target battery
and other low-power applications. A wide operating temperature range from -40°C
to +105°C fits demanding environmental requirements.
MPL115A1 employs a MEMS pressure sensor with a conditioning IC to provide
accurate pressure measurement from 50 to 115 kPa. An integrated ADC provides
digitized temperature and pressure sensor outputs via a SPI port. Calibration Data
is stored in internal ROM. Utilizing raw sensor output, the host microcontroller
executes a compensation algorithm to render Compensated Absolute Pressure
with 1 kPa accuracy.
The MPL115A1 pressure sensor’s small form factor, low power capability,
precision, and digital output optimize it for barometric measurement applications.
• Digitized pressure and temperature information together with programmed
calibration coefficients for host micro use.
• Factory Calibrated
• 50 kPa to 115 kPa Absolute Pressure
• 1 kPa Accuracy
• 2.375 V to 5.5 V Supply
• Integrated ADC
• SPI Interface
• Monotonic Pressure and Temperature Data Outputs
• Surface Mount RoHS Compliant Package
50 to 115 kPa
• Barometry (portable and desk-top)
• Weather Stations
• Hard Disk-Drives (HDD)
• Industrial Equipment
• Health Monitoring
• Air Control Systems
Tape & Reel
# of Ports
Gauge Differential Absolute
5.0 mm X 3.0 mm X 1.2 mm MAX
1 VDD VDD Power Supply Connection.
2 CAP External Capacitor
3 GND Ground
4 SHDN Shutdown (Sleep): Connect to GND to disable the device.
When in shut down the part draws < 1μA supply current
5 CS CS: SPI Chip Select line.
6 DOUT DOUT: Serial data output.
7 DIN DIN: Serial data input.
8 SCLK SPI Serial Clock Input.
© Freescale Semiconductor, Inc., 2009. All rights reserved.