Digital Accelerometer. MMA8491Q Datasheet

MMA8491Q Accelerometer. Datasheet pdf. Equivalent

Part MMA8491Q
Description 3-Axis Multifunction Digital Accelerometer
Feature MMA8491Q 3-Axis Multifunction Digital Accelerometer Rev. 2.1 — 26 April 2016 Data sheet: Technica.
Manufacture NXP
Total Page 28 Pages
Download MMA8491Q Datasheet

3-Axis Multifunction Digital Accelerometer
Rev. 2.1 — 26 April 2016
Data sheet: Technical data
1 General description
The MMA8491Q is a low voltage, 3-axis low-g accelerometer housed in a 3 mm x 3 mm
QFN package. The device can accommodate two accelerometer configurations, acting
as either a 45° tilt sensor or a digital output accelerometer with I2C bus.
As a 45° tilt sensor, the MMA8491Q device offers extreme ease of implementation by
using a single line output per axis.
As a digital output accelerometer, the 14-bit ±8 g accelerometer data can be read from
the device with a 1 mg/LSB sensitivity.
The extreme low power capabilities of the MMA8491Q will reduce the low data rate
current consumption to less than 400 nA per Hz.
2 Features and benefits
Extreme low power, 400 nA per Hz
Ultra-fast data output time, ~700 μs
VDD supply range of 1.95 V to 3.6 V
3 mm x 3 mm, 0.65 mm pitch with visual solder joint inspection
±8 g full-scale range
14-bit digital output, 1 mg/LSB sensitivity
Output Data Rate (ODR), implementation based from < 1 Hz to 800 Hz1
I2C digital interface
3-axis, 45° tilt outputs
3 Typical applications
Smart grid: tamper detect
White goods tilt
Remote controls
1 The ODR for this device is user defined by the period of the Enable pulsed signal. The maximum
recommended frequency of the Enable signal or the ODR that can be achieved for this device is 800 Hz.

NXP Semiconductors
3-Axis Multifunction Digital Accelerometer
4 Ordering information
Table 1. Ordering information
Part Number
Temperature Range
–40 to +85 °C
–40 to +85 °C
–40 to +85 °C
QFN 12
QFN 12
QFN 12
1000 pc / Tape & Reel
5000 pc / Tape & Reel
5 Related documentation
The MMA8491Q device features and operations are described in a variety of reference
manuals, user guides, and application notes. To find the most current versions of these
1. Go to the NXP homepage at:
2. In the Keyword search box at the top of the page, enter the device number
MMA8491Q. In the Refine Your Result pane on the left, click on the Documentation
6 Block diagram
Figure 1. Block Diagram
7 Pinout
MMA8491Q is hosted in a 12-pin 3 mm x 3 mm QFN package. Ten pins are used for
functions; two pins are unconnected. Refer to Table 2 for complete pin descriptions and
Data sheet: Technical data
All information provided in this document is subject to legal disclaimers.
Rev. 2.1 — 26 April 2016
© NXP B.V. 2016. All rights reserved
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