MPL115A1

Rev 3, 08/2009

Freescale Semiconductor

© Freescale Semiconductor, Inc., 2009. All rights reserved.

Pressure

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.

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

ORDERING INFORMATION

Device Name

Package Options

Case No.

# of Ports

Pressure Type

Digital

Interface

None

Single

Dual

Gauge

Differential

Absolute

MPL115A1T1

Tape & Reel

2015

•

•

SPI

Pin Description

PIN

NAME

FUNCTION

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 < 1

μA supply current

5CS

CS: SPI Chip Select line.

6

DOUT

DOUT: Serial data output.

7

DIN

DIN: Serial data input.

8

SCLK

SPI Serial Clock Input.

MPL115A1

50 to 115 kPa

MPL115A1

5.0 mm X 3.0 mm X 1.2 mm MAX

LGA PACKAGE

1

CAP

SHDN

GND

CS

SCLK

2

3

4

8

7

6

5

PIN CONNECTIONS

Application Examples

• Barometry (portable and desk-top)

• Altimeters

• Weather Stations

• Hard Disk-Drives (HDD)

• Industrial Equipment

• Health Monitoring

• Air Control Systems