Low-power, 3-axis ±16g accelerometer for motion and tilt sensing

December 29, 2015 // By Graham Prophet
Analog Devices recently posted details of an addition to its MEMS accelerometer offering, aimed at low-power and cost-sensitive applications such as mobile devices, gaming systems, disc drive protection, image stabilisation, active noise control (ANC) and sports/health devices.

ADXL316 is a small, thin, low power, complete 3-axis accelerometer with signal conditioned voltage outputs, on a single monolithic IC. The product measures acceleration with a minimum full-scale range of ±16 g. It can measure the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion, shock, or vibration.

The user selects the bandwidth of the accelerometer using CX, CY, and CZ capacitors at the X OUT, Y OUT, and Z OUT pins. Bandwidths can be selected to suit the application, with a range of 0.5 Hz to 1600 Hz for X and Y axes, and a range of 0.5 Hz to 550 Hz for the Z axis. The device comes in a low profile, 4 × 4 × 1.45 mm, 12-lead, plastic lead frame package.

Its quiescent supply current is 350 µA typical, from a single-supply of 1.8 to 3.6V. The device has 10,000g shock survival, good temperature stability and you can adjust bandwidth (BW) with a single capacitor per axis. It operates over the -40°C to +105°C temperature range and is qualified for automotive applications.

Analog Devices; www.analog.com/media/en/technical-documentation/data-sheets/ADXL316.pdf