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