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SM840004-11 Fiches technique(PDF) 1 Page - Micrel Semiconductor |
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SM840004-11 Fiches technique(HTML) 1 Page - Micrel Semiconductor |
1 / 10 page SM840004-11 62.5/125MHz Gigabit Ethernet, 4 Output, Ultra-Low Jitter Clock Synthesizer RotaryWave is a trademark of Multigig, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( 408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com July 2010 M9999-070110-A hbwhelp@micrel.com or (408) 955-1690 General Description The SM840004-11 clock synthesizer was designed for Gigabit Ethernet applications. The device design is optimized for 62.5MHz and 125MHz using a standard 25MHz fundamental parallel resonant crystal, with unparalleled stability and accuracy over the full operating range, and provides an easy fit for Jitter and Phase Noise standards for these high performance interfaces. The SM840004-11 design includes a unique power reduction methodology, along with a patented RotaryWave™ architecture, that provides a stable clock with very low noise for optimized performance. This yields an overall improved Bit Error Rate (BER) and improved waveform integrity. Datasheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Features • Generates 4 optimized LVCMOS clock outputs • RMS phase jitter @ 125MHz: ~55 fs (typ) • Integrated loop filter components • Operates with either a 3.3V or 2.5V supply • Power consumption 65mA (typ @ 2.5V) • Selectable output frequency: 125MHz or 62.5MHz • Input frequency of 25MHz • Fundamental parallel resonant crystal interface • Pin compatible with the ICS/IDT840004-11 • Industrial temperature range: –40°C to +85°C • Green, RoHS-compliant and PFOS-compliant ___________________________________________________________________________________________________________ Block Diagram |
Numéro de pièce similaire - SM840004-11 |
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Description similaire - SM840004-11 |
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