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Silicon Designs upgrades MEMS accelerometers

14 Jan 2014

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Kirkland, Washington-based Silicon Designs developed the 2220 MEMS variable capacitance accelerometers for industrial, aerospace and automotive uses. An enhanced version of the SDI 2210 model, the single-axis accelerometers feature high-drive, low-impedance buffering and can withstand up to 2000g of shock inputs.

The SDI Model 2220 combines an integrated low-noise, nitrogen-damped, fully-calibrated MEMS VC accelerometer chip with high-drive, low-impedance buffering, each contained in an epoxy-sealed rugged anodized aluminium housing that mounts via two M3 screws.

The unit has a mass of 10g and packaged size of 1in x 0.5in x 0.44in. It is available in seven variants with measurement ranges from ±2g to ±200g. The outputs are either two analogue ±4V differential; or 0.5V to 4.5V single-ended outputs that vary with acceleration. At zero acceleration, output differential voltage is nominally 0VDC (DC response). SDI Model 2220 series modules can reliably operate over a temperature range of –55°C to +125°C.

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