MEMS Capacitive Accelerometers.

The Model 2422 Series from Silicon Designs, offers low-noise, low-voltage (5 VDC) and low-cost acceleration and vibration sensing within zero-to-medium frequency instrumentation applications. 

Series models are available in eight standard ranges, from ±2 g to ±400 g. They are further offered with choice of either a ±4V differential or 0.5V to 4.5V single ended output. Series modules can reliably measure and respond to both DC and AC acceleration (0 Hz to more than 3000 Hz). Their robust design seamlessly combines both a micro-machined capacitive sense element together with a custom integrated circuit. Series internals are packaged within a lightweight, epoxy sealed, and rugged anodized aluminum case, further terminating in a 3-foot integral shielded cable. Units are relatively insensitive to temperature changes and gradients over a range of -55°C to +125°C.

The low-noise internal MEMS capacitive sense element contained within the Model 2422 Series is 100% designed and manufactured at Silicon Designs global corporate headquarters and R&D centre. As the OEM of its own MEMS capacitive sense elements, Silicon Designs is able to carefully regulate its own R&D and manufacturing processes, thereby ensuring that each Model 2422 Series module is manufactured to be virtually identical within any given g-range. It also allows Silicon Designs to offer a standard product range with both long-term stability and enhanced bias and scale factor over temperature performance specifications that are unmatched. All Silicon Designs MEMS capacitive accelerometers are in-house tested, programmed, calibrated, and verified to ensure their utmost measurement accuracy and reliability. They are also fully serialized for traceability before shipment.

In addition to its Model 2422 Series, Silicon Designs offers a specialty hermetic model variation, the 2422H Series, also as standard product. The Model 2422H Series incorporates all of the same low-noise, high-performance internal components as its non-hermetic counterpart, with the additions of enhanced temperature compensation; a rugged, IP67 rated, hermetically sealed lightweight titanium housing; and IP61 rated connector. These added features afford the accelerometer module added protection from moisture, dust, corrosion, and contaminants, all of which can affect measurement integrity. Other standard and custom accelerometer design modifications are available upon request. Please consult the factory for details.

The Model 2422 Series is ideal for the support of a variety of in-laboratory zero-to-medium frequency instrumentation requirements in automotive, aerospace, industrial, power generation, and test and measurement, and particularly, where low-noise, a +5 VDC regulated power supply, and long-term stability are needed.

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Distributor for Turkey.

Silicon Designs has announced the appointment of the Istanbul-based Elektro Elektronik San Ve Tic As (Elektro) as its exclusive authorized distributor in Turkey for all of the company’s product lines (MEMS capacitive accelerometers and chips) effective June 2020.

Since 1979, Elektro has been supplying semiconductor, passive, and electromechanical components, including sensors, switches, and inertial measurement units, to aerospace, OEM, and industrial equipment customers in Turkey, and via its role as experienced technical sales representatives for some of the industry’s top manufacturers. In addition, Elektro is both an ISO 9001 and TRACE certified manufacturer of its own product technologies.

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Capacitive Accelerometers.

Silicon Designs has announced its high-performance, Model 2276 Series for zero-to-medium frequency aerospace and automotive testing, industrial vibration monitoring and robotics instrumentation applications.

Available in eight standard ranges from ±2 g to ±400 g, the single-axis Model 2276 Series combines an integrated low-noise, nitrogen-damped, fully calibrated MEMS capacitive accelerometer chip together with high-drive, low-impedance buffering. Sense elements are contained within an epoxy-sealed, rugged anodized aluminum housing. This design allows the Series to reliably withstand shock inputs of up to 5000 g, as well as standard operating temperature ranges from –55°C to +125°C. The accelerometers further offer superior bias performance, including a temperature shift coefficient of -100 to +100 PPM of span/°C, and a scale factor temperature shift coefficient of -150 to +50 PPM/°C. Model 2276 Series accelerometers respond to both DC and AC acceleration, with choice of either two analog ±4 V (differential); or 0.5 to 4.5 V (single-ended) outputs, both of which vary with acceleration. At zero acceleration, output differential voltage is nominally 0 VDC (DC response). Onboard voltage regulation also minimizes supply voltage variation effects.

All Silicon Designs MEMS capacitive accelerometers and chips, including dies, are 100% designed, manufactured, assembled and tested at the company’s state-of-the-art global corporate headquarters and R&D center, located just outside of Seattle, Washington. Each module is serialized for traceability and fully calibrated prior to shipment.

The high-performance, low-impedance design of the Model 2276 Series is ideal for vibration and acceleration measurements within industrial and commercial environments, particularly in applications where an accelerometer’s low mass (9 g) and small size (0.94" by 0.63" by 0.425") can help to minimize mass loading effects on the test article. Typical applications include aircraft flight and flutter testing, automotive RLDA, industrial vibration monitoring and analysis, robotics, biomechanics, industrial machinery and equipment control, modal and structural analysis, crash event detection, and general in-laboratory testing.

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Accelerometer modules.

Silicon Designs (SDI) has introduced its Model 2422H low-voltage, specialty hermetic, MEMS variable capacitive accelerometer modules.

Available in eight unique models, with standard ranges from ±2 g to ±400 g, the Model 2422H series is expressly designed for zero-to-medium frequency vibration and acceleration sensing, in commercial and industrial applications where a hermetically sealed case and +5 VDC regulated power supply are absolute requirements. Design of the Model 2422H series incorporates Silicon Designs’ own MEMS accelerometer chip, for an enhanced bias and scale factor over temperature performance specification that is unmatched in the industry, along with excellent long-term stability. Modules are packaged in a rugged, IP67 rated, hermetically sealed lightweight titanium case, for added protection from moisture, dust, corrosion, and other contaminants. Units are easily mounted via two screws, adhesive, or a magnet. The IP61 rated connector of the Model 2422H meets IP67 requirements when sealed with a boot, sleeve, or heat shrink.

The Model 2422H series produces differential analog output voltage pairs (AON & AOP) which vary with acceleration. Signal outputs are fully differential about a common mode voltage of approximately 2.5V. Modules can support either a ±4V differential or 0.5V to 4.5V single ended output, for complete measurement flexibility. They can also respond to both DC and AC (0 to 2000+ Hz) acceleration. At zero acceleration, differential voltage output is nominally 0 VDC; at ± full-scale acceleration, it is ±4 VDC. Units are also relatively insensitive to temperature changes and gradients over a standard operating temperature range of -55°C to +125°C. Each accelerometer module is shipped directly from the factory fully calibrated and serialized for traceability.

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.

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Low-Mass VC Response Accelerometers.

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. These specifications are unmatched among other industry MEMS VC accelerometer manufacturers yet are still offered by Silicon Designs at a highly competitive price point.

The Model 2220 series is available in seven unique models, with standard measurement ranges from ±2 g to ±200 g, each with a wide frequency response measuring down to zero hertz. Each accelerometer module is housed within an epoxy-sealed rugged anodized aluminum housing, with mounting via two M3 screws. Its lower mass (10 g) and compact size (1" x 1" x 0.3") can help to minimize mass loading effects, making it ideal 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 0 VDC (DC response), with typical 1% cross-axis sensitivity. Onboard voltage regulation minimizes supply variation effects. Units are designed to withstand shock inputs of up to 2000 g over a standard temperature range of –55°C to +125°C. Each module is serialized for traceability and calibrated prior to factory shipment.

The combined low mass, small dimensional size, and low-impedance outputs of the Model 2220 make the series particularly ideal 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. Non-standard g ranges, packages and connector configurations are available upon request.

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MEMS Capacitive Accelerometers.

Silicon Designs, Inc. has introduced six new series of low-cost, high-performance MEMS capacitive accelerometers, in both traditional and smaller footprints.

These include the single axis Model 2220 or triaxial Model 2470, featuring aluminum housings and a standard 1 meter integral cable; the single axis Model 2240 or triaxial Model 2480, featuring hermetically sealed titanium housings and an integral connector; and the single axis Model 2276 or triaxial Model 2476, featuring aluminum housings and an integral connector. Each model is offered in full-scale standard ranges from ±2 g to ±400 g, along with choice of ±4V differential or 0.5V to 4.5V single ended output. Their expanded temperature performance to +125°C, as well as improved scale factor and bias temperature shifts, allows them to provide excellent long-term stability with an industry-best-in-class price-for-performance ratio. The accelerometers are also relatively insensitive to temperature changes and gradients.

Depending upon selected model, units feature a simple four-wire (single axis) or eight-wire (triaxial) connection; flexible response to either DC or AC acceleration (0-2000 Hz); low-impedance outputs, supporting up to 2000 feet of cable; and flexible operation from +8 to +32 VDC power. Each device is marked on its top and bottom surfaces with a serial number for traceability. A calibration test sheet is supplied with each unit, showing measured bias, scale factor, linearity, operating current, and frequency response. A simple test sequence, using the earth’s gravity, may be used to verify operation and calibration. 

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Low-noise single axis accelerometer.

Silicon Designs has announced the added versatility of its Model 2210 Series, to include measurement capabilities on one, two, or three orthogonal axes.

Low-noise single axis Model 2210 accelerometer modules integrate a MEMS VC accelerometer chip with high-drive, low-impedance buffering for reliable, repeatable measurements. When used with a Silicon Designs mounting block, such as the Model 2330-BLK, the new accelerometer can effectively measure on either one, two, or three axes, allowing for the specification of a single part number for multiple requirements, thereby reducing in-house inventory counts.

Offered in ranges from ±2 to ±400 g, the Silicon Designs Model 2210 Series generates two analog voltage outputs which vary in response to applied acceleration. Customers can utilize either single-ended or differential output, the latter of which doubles accelerometer sensitivity over single-ended versions. The sensitive axis of the Model 2210 is perpendicular to the package bottom, with positive acceleration defined as a force pushing on the bottom of that package. Output scale factor is independent from the supply voltage of +8 to +32V. At zero acceleration, differential output voltage is nominally 0 VDC; at full scale, ±4 VDC.

Sensing elements of the Model 2210 are packaged within a compact, lightweight, anodized epoxy sealed aluminum housing, occupying a total footprint of just one square inch. Their design features a simple-yet-robust four-wire connection and internal voltage regulator, which minimizes supply voltage variation effects. Units are relatively insensitive to temperature changes and feature quick, easy self-calibration. All Silicon Designs accelerometer modules and chips are 100% designed, developed and manufactured at the company’s global corporate headquarters and MEMS fabrication facility near Seattle, Washington, USA. Each unit undergoes rigorous quality testing prior to shipment.

Model 2210 MEMS VC accelerometer modules are ideal for lower frequency vibration testing requirements, including vibration analysis, machinery control, modal analysis, robotics and crash testing. With their versatile design and performance reliability, they may be specified within a variety of aerospace, automotive, defense, energy, industrial, and test & measurement applications.

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300 discounted products to US govt customers!

Silicon Designs, Inc. (SDI) has announced the availability of more than 300 product models at discounted rates to U.S. government customers under a recently awarded U.S. General Services Administration (GSA) schedule contract. GSA Schedules, also referred to as Multiple Award Schedules and Federal Supply Schedules, establish long-term U.S. government wide contracts with commercial firms, providing employees with fast, flexible, cost-effective access to more than 11 million commercial products and services at volume discount pricing.

Based outside of Seattle, SDI specializes in the design, development and manufacture of high-reliability accelerometers with integrated amplification for zero-to-medium frequency applications. On-board voltage regulation and an internal voltage reference minimize temperature and voltage changes while eliminating additional external power regulation. Carefully regulated manufacturing processes ensure that each sensor is made to be virtually identical, allowing users to swap out parts in the same g range with few to no testing modifications, saving time and resources. This also provides test engineers with a quick plug-and-play solution for almost any application, with total trust in sensor accuracy when used within published specifications.

Notes SDI’s Director of Sales & Marketing, Kati Cole, “Silicon Designs started with a single government contract award, leading to many others in critical applications such as space, transportation, military and defense. We owe much of our success to the U.S. government, and products built for those agencies have led to further commercial product development, which in turn earned us the Tibbett’s Award from the U.S. Small Business Administration and an induction into NASA’s Space Technology Hall of Fame.”