MMA8491Q 3-Axis Multifunction Digital Accelerometer Rev. 2.1 26 April 2016 Data sheet: Technical data COMPANY PUBLIC 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 2 as either a 45 tilt sensor or a digital output accelerometer with I C 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 s V supply range of 1.95 V to 3.6 V DD 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 1 Output Data Rate (ODR), implementation based from < 1 Hz to 800 Hz 2 I C digital interface 3-axis, 45 tilt outputs 3 Typical applications Smart grid: tamper detect Anti-theft 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 MMA8491Q 3-Axis Multifunction Digital Accelerometer 4 Ordering information Table 1. Ordering information Part Number Temperature Range Package Shipping MMA8491QT 40 to +85 C QFN 12 Tray MMA8491QR1 40 to +85 C QFN 12 1000 pc / Tape & Reel MMA8491QR2 40 to +85 C QFN 12 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 documents: 1. Go to the NXP homepage at: