FemtoClock™ Crystal-to-LVCMOS/LVTTL Frequency Synthesizer

General Description The 840004-01 is a 4 output LVCMOS/LVTTL Synthesizer optimized to generate Ethernet reference clock frequencies. Using a 25MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL1:0): 156.25MHz, 125MHz, an

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FemtoClock Crystal-to-LVCMOS/LVTTL Frequency Synthesizer

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FemtoClock® Crystal-to-LVCMOS/LVTTL Frequency Synthesizer

The 840004-01 is a 4 output LVCMOS/LVTTL Synthesizer optimized to generate Ethernet reference clock frequencies. Using a 25MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL1:0): 156.25MHz, 125MHz, and 62.5MHz. The 840004-01 us ·Four single-ended LVCMOS/LVTTL outputs 17Ω typical output impedance\n·Selectable crystal oscillator interface or single-ended input\n·Output frequency range: 56MHz - 175MHz\n·VCO range: 560MHz - 700MHz\n·RMS phase jitter at 156.25MHz (1.875MHz – 20MHz): 0.52ps (typical)Phase Noise:Offset ;

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FEMTOCLOCKS??CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER

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