Analog Devices MEMS Accelerometer Touts Ultra-low Power for Healthcare, Industrial Applications
Article By : Analog Devices Inc.
Analog Devices' ADXL367 MEMS accelerometer improves power consumption by two times versus the previous generation of the device, while improving noise performance by up to over 30%.
Designed for a wide range of healthcare and industrial applications, including vital signs monitoring, hearing aids, and motion-enabled metering devices, Analog Devices Inc.’s (ADI) three-axis ADXL367 MEMS accelerometer improves power consumption by two times versus a previous generation of the device (ADXL362) while improving noise performance by up to over 30%.
The new accelerometer also provides extended field time that maximizes battery life and reduces maintenance frequency and cost. It consumes only 0.88µA at a 100Hz output data rate and 180nA when in motion-triggered wake-up mode. Unlike accelerometers that use power duty cycling to achieve low power consumption, the ADXL367 does not alias input signals by undersampling but rather samples the full bandwidth of the sensor at all data rates.
Key features include 200nW motion detection in wakeup mode and 970nW in measurement; and deep multimode output FIFO, a built-in micropower temperature sensor, an internal ADC for synchronous conversion of an additional analog input, and single/double tap detection and state machine to prevent a false triggering.
The device functions with supply voltages as small as 1.1V, allowing for single cell battery operation without external boost converters. It also has provisions for external control of the sampling time and/or an external clock.