January 9, 2014. Silicon Designs Inc. (SDI), a provider of rugged industrial-grade MEMS variable capacitive (MEMS VC) accelerometer chips, modules, and supporting data-acquisition products, has announced the global market introduction of the compact, low-mass Model 2220 Series.
The single-axis SDI Model 2220 is a higher-performance version of the company's Model 2210, combining 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 aluminum housing that mounts via two M3 screws. This design is suitable for measuring acceleration within industrial and commercial environments, where low mass (10 g) and small size (1″ by 0.5″ by 0.44″) help to minimize mass loading effects. Available in seven unique models, with measurement ranges from ±2 g to ±200 g and a wide frequency response, the SDI Model 2220 series responds to both DC and AC acceleration, with either two analog ±4-V (differential); or 0.5- to 4.5-V (single-ended) outputs that vary with acceleration. At zero acceleration, output differential voltage is nominally 0 VDC (DC response). Differential sensitivity ranges are from 2,000 mV/g for the ±2-g module to 20 mV/g for the ±200-g module, with typical 1% cross-axis sensitivity. Onboard voltage regulation also minimizes supply voltage variation effects. SDI Model 2220 series modules can withstand shock inputs of up to 2000 g and can reliably operate over a temperature range of –55°C to +125°C. Each module is serialized for traceability and is fully calibrated.
The combined low mass, small size, and low-impedance outputs of SDI Model 2220 make the series suitable for flight test, aircraft flutter testing, vibration monitoring and analysis, robotics, biomechanics, automotive RLDA, machinery and equipment control, modal analysis, crash testing, and general in-laboratory applications.