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Ceramic resonators As demonstrated by , and on display at Electronica 2006, Hall B5.325, Murata ceramic resonators now out-perform crystal oscillators on stability. Oscillators have traditionally been larger, heavier and more power-hungry than resonators. However, in recent years, the stability of Murata's ceramic resonators has progressively approached that of crystal oscillators. It has now surpassed it, with the CSTCE-SK devices providing a replacement for ±500ppm oscillators, eroding the only remaining advantage they had over ceramic resonators. Other advantages for the Murata resonators include a rise time that is approximately 100 times faster. There is also a load capacitor built-in, which reduces the PCB area requirement and the boardassembly workload. Devices with this high stability are now in production for 24 MHz and 30 MHz frequencies, supporting applications such as the latest highspeed USB interfaces. Higher frequencies will become available soon. They are available on plastic tape in 3000-piece, 180-mm reels, or 9000- piece, 330mm reels, and withstand the rigours of reflow soldering. Optical positioning is recommended for mounting these parts.
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EDI-new-products-17/10/2006 |
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