SM802128UMG 데이터 시트보기 (PDF) - Micrel

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SM802128UMG

ClockWorksΤΜ 10GbE Octal 156.25MHz, 312.5MHz, Ultra-Low Jitter, LVPECL Frequency Synthesizer

Micrel 

Micrel, Inc.

Application Information

Input Reference

When operating with a crystal input reference, do not

apply a switching signal to REF_IN.

Crystal Layout

Keep the layers under the crystal as open as possible

and do not place switching signals or noisy supplies

under the crystal.

Crystal load capacitance is built inside the die so no

external capacitance is needed. See the Selecting a

quartz crystal for the Clockworks Flex I Family of

Precision Synthesizers application note for further

details.

Contact Micrel’s HBW applications group if you need

assistance on selecting a suitable crystal for your

application at: hbwhelp@micrel.com.

SM802128

January 2012

7

hbwhelp@micrel.com or (408) 955-1690

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