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LMK04000 Family Low-Noise Clock Jitter Cleaner with Cascaded PLLs
www.DataSheet4U.com
July 24, 2009
LMK04000 Family
Low-Noise Clock Jitter Cleaner with Cascaded PLLs
1.0 General Description
The LMK04000 family of precision clock conditioners provides low-noise jitter cleaning, clock multiplication and distribution without the need for high-performance voltage controlled crystal oscillators (VCXO) module. Using a cascaded PLLatinumâ„¢ architecture combined with an external crystal and varactor diode, the LMK04000 family provides sub-200 femtosecond (fs) root mean square (RMS) jitter performance. The cascaded architecture consists of two high-performance phase-locked loops (PLL), a low-noise crystal oscillator circuit, and a high-performance voltage controlled oscillator (VCO).