Quartz Crystals and Microchip ICs
Quartz crystals have been used for almost a century to provide a frequency reference in electronic circuits. In the 1940s,the manufacturing of quartz crystals was industrialized due to a sudden need for reliable wireless communication during World War Two.Prior to that, crystals were mostly used by radio amateurs and it was with their assistance that the quartz crystal industry in the US was built-up during this time frame. At that time,natural quartz was use and only a few mines provided the required purity for a good-performing quartz crystal. Today, synthetic quartz – with its higher purity levels – has replaced natural quartz as a key component in timing and communication applications.
This application note will explain how to choose or specify a quartz crystal for use with a Microchip timing IC (see Figure 1).
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SM802xxx 、 SM803xxx 、 PL135-XX 、 PL500-17 、 PL500-37 、 PL502-3X 、 PL520-XX 、 PL586-XX 、 PL602-2X 、 PL60203X 、 PL602-37 、 PL602041 、 PL60208X 、 PL6070XX 、 PL610-01 、 PL610-32 、 PL611-XX 、 PL611s-XX 、 PL613-XX 、 PL671-XX 、 PL686-XX 、 SY89529 、 SY8953X 、 SM8400XX 、 SM843256 、 SM844256 、 SY898535 |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2016 |
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ANTC207;DS00002187A |
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393 KB |
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