Enhanced bias for low-mass VC response accelerometers

10th May 2018

Enaie Azambuja

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Silicon Designs has announced the recently enhanced performance of its compact, low-mass, single axis Model 2220 series. Design of the enhanced Model 2220 series incorporates Silicon Designs’ new proprietary high performance MEMS chip, along with high-drive, low-impedance buffering, for industry-exclusive improved bias and scale factor over temperature performance.

The Model 2220 series is available in seven models, with standard measurement ranges from ±2g to ±200g, each with a wide frequency response measuring down to zero hertz.

Each accelerometer module is housed within an epoxy-sealed rugged anodised aluminium housing, with mounting via two M3 screws. Its lower mass (10g) and compact size (1" x 1" x 0.3") can help to minimise mass loading effects, making it suitable for zero-to-medium frequency acceleration and vibration measurements within a variety of industrial and commercial applications.

The Silicon Designs Model 2220 series can respond to both DC and AC acceleration, either with two analog ±4V (differential); or 0.5 to 4.5V (single-ended) outputs that vary with acceleration.

At zero acceleration, differential voltage output is nominally 0VDC (DC response), with typical 1% cross-axis sensitivity. Onboard voltage regulation minimises supply variation effects.

Units are designed to withstand shock inputs of up to 2000g over a standard temperature range of –55°C to +125°C. Each module is serialised for traceability and calibrated prior to factory shipment.

All of Silicon Designs MEMS variable capacitive accelerometers and chips are 100% designed, manufactured, and tested at the company’s state-of-the-art facility in Kirkland, Washington, USA. This includes the manufacture of the chips and dies themselves.

The completely vertically integrated manufacturing processes of Silicon Designs allow the company to offer high-quality products at still-highly competitive pricing, along with some of the industry’s shortest lead times. Standard model quantities can typically ship in less than two weeks.

The combined low mass, small dimensional size, and low-impedance outputs of the 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.