1 General description
The MPL115A1 is an absolute pressure sensor with a digital SPI output targeting low-cost applications. A
miniature 5 x 3 x 1.2 mm LGA package is ideally suited for the space constrained requirements of portable
electronic devices. Low current consumptions of 5 μA during Active mode and 1 μA during Shutdown (Sleep)
mode are essential when focusing on low-power applications. The wide operating temperature range spans
from –40 °C to +105 °C to fit demanding environment conditions.
The MPL115A1 employs a MEMS pressure sensor with a conditioning IC to provide accurate pressure
measurements from 50 kPa to 115 kPa. An integrated ADC converts pressure and temperature sensor readings
to digitized outputs via a SPI port. Factory calibration data is stored internally in an onboard ROM. Utilizing the
raw sensor output and calibration data, 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.
2 Features
• 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
3 Applications
• Barometry (portable and desktop)
• Altimeters
• Weather stations
• Hard-disk drives (HDD)
• Industrial equipment
• Health monitoring
• Air control systems