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Description

The Si5328 is a jitter-attenuating precision clock multiplier for Synchronous Ethernet applications requiring sub 1 ps jitter performance and ultra-low loop bandwidth. Whencombined with a low-wander, low jitter reference oscillator, the Si5328 meets all of the wander, MTIE, TDEV, and other requirements listed in ITU-T G.8262/Y.1362. The Si5328 accepts two input clocks ranging from 8 kHz to 710 MHz and generates two output clocks ranging from 8 kHz to 808 MHz. The two outputs are divided down separately from a common source.

Features

? Fully-compliant with ITU-T G.8262, EEC options 1 and 2.

? Generates any frequency from 8kHz to 808MHz.

? Ultra-low jitter clock outputs with jitter generation as low as 0.3 ps rms (12 kHz–20 MHz)

? Integrated loopfilter with selectable loop bandwidth (0.1 Hz; 1 to 10 Hz)

? Dual clock inputs with manual or automatically controlled hitless switching

? Dual clock outputs with selectable signal format(LVPECL, LVDS, CML, CMOS)

? LOL, LOS, FOS alarm outputs

? I2C or SPI programmable

? On-chip voltage regulator for 2.5 ±10 or 3.3 V ±10 operation

? Small size: 6 x 6 mm 36-lead QFN

? Pb-free, ROHS compliant

Applications

? G.8262 Synchronous Ethernet, EEC options 1 and 2

? GbE/10GbE/100GbE Synchronous Ethernet

? Carrier Ethernet switches, routers