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Shock Resistance & Vibration Information
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Cost Reduction Opportunities Roadmap with MEMS Oscillators
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MEMS Applications:
-CCD Clock for VTR Camera
-Equipment Connected to PCs
-Low Profile Equipment
-Lower Cost Crystal Oscillator Replacement
-Computers and Peripherals
-Portable Electronics (MP3 Players, Games)
-Consumer Electronics such as TV’s, DVR’s, etc.
-Vibrant, Shock-Prone & Humid Environments for Industrial Equipment
-Demanding Military & Automotive Electronics
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MEMS Oscillators Featuring Discera PureSilicon Resonator™ Technology
Abracon's new MEMS Oscillators featuring Discera PureSilicon Resonator™ Technology are fabricated using the same semiconductor manufacturing techniques used in high-volume IC fabrication. Abracon and Discera have partnered to supply this latest emerging technology product as an alternative to traditional quartz based Oscillators. Abracon's valued customers will benefit from this new partnership by having direct access to these latest emerging technology frequency products from a reliable and proven supplier. Discera and Abracon will work closely together in the future to continue providing new MEMS based products for electronics timing applications.
The micromechanical based resonator oscillators set new benchmarks for shock resistance allowing new cost saving opportunities for harsh environment applications including military, automotive, instrumentation, and portable consumer electronic products. Abracon's PureSilicon Resonator™ MEMS Oscillators have been tested under random vibration ranges up to 50G and have proven to be reliable with high frequency stability over temperature cycling, aging, and vibration operation.
MEMS Oscillators are perfect for high volume consumer electronics applications where low cost and high reliability are a must. MEMS technology offers a development road map of continued miniaturization, and cost reduction opportunities that are available by utilizing MEMS Oscillator semiconductor manufacturing techniques. This combination of MEMS technology and the semiconductor model of manufacturing creates an outstanding opportunity for design and materials procurement teams to meet challenging cost-down, reliability, lead time reduction, and component miniaturization goals.
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ASFLM 5.0 x 3.2 x 0.85mm Available Now. In Stock!!
1.8Vdc to 3.3Vdc • Plastic QFN Package • CMOS output up to 150MHz |
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ASEM 3.2 x 2.5 x 0.85mm Samples Available Q2 2008
1.8Vdc to 3.3Vdc • Plastic QFN Package • CMOS output up to 150MHz |
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ASDM 2.5 x 2.0 x 0.8mm Samples Available Q3 2008
1.8Vdc to 3.3Vdc • Plastic QFN Package • CMOS output up to 150MHz |
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ASAM 2.0 x 1.6 x 0.7mm Samples Available Q2 2009
1.8Vdc to 3.3Vdc • Plastic QFN Package • CMOS output up to 150MHz |
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SHOCK RESISTANCE |
One of the areas in which micromechanical resonator oscillators perform better over quartz crystal is the shock resistance. MEMS resonator typically has mass as small as 10-14kg and its stiffness is usually as high as tens thousand of N for high frequency structures. Simulations show being able to achieve up to 100,000g shock. The resonator itself will survive the g-shock very well.
However, the impact of the g-shock for the packaging could be severe since the packaging contains most of the mass. In this particular evaluation, we flip-chip resonator on top of an oscillator ASIC with solder balls as show below in Figure 1, which probably represent a worse case package compared to ceramic package or plastic over-mold package.
If the oscillator experience 30,000g shock along x, y, and z-axis, the z-axis stress and two shear stresses are listed in Table 1. Therefore, this type of oscillator will survive 30,000g of shock. A recent test has shown that MEMS oscillators can survived the g-shock of an air gun. All of the tested 125MHz MEMS oscillator tested, did not show any performance degradation.
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Table 1:
Stress generated due to 30,000g shock in a BGA assembled MEMS oscillator.
Click on image to enlarge.
Learn more about this study in our whitepapers, click here for white paper. |
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VIBRATION OPERATION |
Silicon MEMS oscillators were tested under random vibration ranging from 2.84G to 50G. The output spectral out of the oven for a thermal cycle test, as shown below, the frequency deviation across the temperature did not change with time.
Based on results of a previous test, we know that the packaged resonator passed the Height Temperature Storage Life (HTSL), this data indicates that the resonator/oscillator package did not degrade with high temperature storage.
With all the reliability data shown in previous sections, and with the fact these oscillators have met the XO specification including jitter, power consumption, voltage variation, and temperature stability, MEMS-based silicon resonator oscillators are now ready for commercialized shipping in timing and frequency reference applications.
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Vibration Operation:
High temperature storage life + thermal cycling. Click on image to enlarge.
Learn more about this study in our whitepapers, click here for white paper.
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Shock and Vibration Information Courtesy of Discera |
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