Analog Devices iMEMS accelerometers bypass temperature compensation circuitry

May 24, 2011 — Analog Devices Inc. (ADI) released the ADXL206 high precision, low power, dual-axis iMEMS accelerometer with signal conditioned analog voltage outputs. "Instead of using additional temperature compensation circuitry, ADI’s design techniques ensure that high performance is built into the microelectromechanical system (MEMS)," said Wayne Meyer, marketing and applications manager, MEMS/Sensors Technology Group, Analog Devices.

Because of the designed-in temperature compensation, quantization error and non-monotonic behavior are essentially eliminated, and temperature hysteresis is typically less than 2mg over the entire -40° to +175°C temperature range, said Meyer.

The single-chip ADXL206 measures acceleration with a full-scale range of ±5g and measures both dynamic acceleration such as tilt and static acceleration such as gravity. Offering a guaranteed operating temperature range of -40° to +175°C and excellent overall stability, the ADXL206 is well suited for geological downhole tools and other extreme high-temperature industrial applications. The ADXL206 MEMS device is compact, with lower power consumption (from over 10 to under 0.5mA per axis), enabling more information collection in constricted downhole regions.

The ADXL206 iMEMS accelerometer has a typical noise floor of 110 μg/√Hz, allowing signals below 1mg (0.06° of inclination) to be resolved in tilt sensing devices using narrow bandwidths (<60 Hz). 0.5-2.5kHz bandwidths can be selected to suit the application.

ADXL206 iMEMS accelerometer features:

  • -40° to +175°C temperature range
  • 1 mg resolution at 60Hz
  • Low power: 700μA at VS = 5V (typical)
  • High zero g bias repeatability
  • High sensitivity accuracy
  • 3500 g shock survival
  • 13 × 8 × 2mm, 8-lead, side-brazed ceramic dual in-line package (SBDIP) package

ADI also produced the AD8229, 1.0-nV/√Hz high-temperature instrumentation amplifier for high-temperature applications.

Analog Devices recently won a US International Trade Commission (ITC) ruling that found that Knowles Electronics infringed ADI’s Wafer Anti-Stiction Application (WASA) patent, U.S. Pat. No. 7,364,942 on its MEMS microphone technology.

ADI is a leader in data conversion and signal conditioning technology. Download data sheets and view product pages at

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