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XR81102

Exar
Part Number XR81102
Manufacturer Exar
Description LVPECL Clock Synthesizer
Published Nov 23, 2016
Detailed Description XR81102 Universal Clock - High Frequency LVPECL Clock Synthesizer General Description The XR81101-CA02 is a clock synth...
Datasheet PDF File XR81102 PDF File

XR81102
XR81102

Overview
XR81102 Universal Clock - High Frequency LVPECL Clock Synthesizer General Description The XR81101-CA02 is a clock synthesizer operating at a 3.
3V/2.
5V supply with Integer divider, using a 25MHz parallel resonant crystal reference input provides a 125MHz LVPECL outputs.
The device is optimized for use with a 25MHz crystal (or system clock) and generates a 125MHz output clock for GE applications.
The LVPECL outputs have very low phase noise jitter of sub 150fs, while consuming extremely low power.
The application diagram below shows a typical synthesizer configuration with any standard crystal oscillating in fundamental mode.
Internal load capacitors are optionally available to minimize/eliminate external crystal loads.
A system clock can also be used to overdrive the oscillator for a synchronous timing system.
The typical phase noise plot below shows the jitter integrated over the 1.
875MHz to 20MHz range that is widely used in WAN systems.
These clock devices show a very good high freq...


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