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SM803020 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SM803020 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 14 page SM803020 Flexible Ultra-Low Jitter Clock Synthesizer 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 22, 2013 Revision 1.0 hbwhelp@micrel.com or (408) 955-1690 General Description The SM803020 is a dual-PLL clock generator that achieves ultra-low, 74.2fs_rms output jitter at 156.25MHz output frequency. It accepts a crystal input or a reference input. Each output channel is individually configurable to a differential PECL, LVDS, HCSL, or CMOS output logic level. PECL is selected by default, but can be overridden through SPI. It is packaged in a dual-row 84-pin 7mm x 7mm package. Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com. Typical Application Features • Generates twelve 156.25MHz outputs • Independently programmable output logic: − Output logic: LVPECL (default), LVDS, HCSL, LVCMOS • 74.2fs jitter at 156.25MHz (1.875MHz to 20MHz) • Selectable inputs require 39.0625MHz input frequency − XTAL (default) − Differential or single-ended reference clock (SPI selectable) • 2.5V or 3.3V operating power supply • Separate output power supplies: − Different banks can be at different levels • Industrial temperature range (–40°C to +85°C) • Green, RoHS, and PFOS compliant • Available in 84-pin 7mm × 7mm QFN package Applications • 1/10/40/100 Gigabit Ethernet |
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