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Description

The Si5325 is a low jitter, precision clock multiplier for applications requiring clock multiplication without jitter attenuation. The Si5325 accepts dual clock inputs ranging from 10 to 710 MHz and generates two clock outputs ranging from 10 to 945 MHz and select frequencies to 1.4 GHz. The

two outputs are divided down separately from a common source. The device provides virtually any frequency translation combination across this operating range.

Features

? Generates any frequency from 10 to 945 MHz and select frequencies to 1.4 GHz from an input

frequency of 10 to 710 MHz

? Low jitter clock outputs w/jitter generation as low as 0.6 ps rms (30 kHz–1.3 MHz)

? Integrated loop filter with selectable loop bandwidth (150 kHz to 2 MHz)

? Dual clock inputs w/manual or automatically controlled hitless switching

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

? Support for ITU G.709 and custom FEC ratios (255/238, 255/237, 255/236)

? LOS, FOS alarm outputs

? Digitally-controlled output phase adjust

? I2C or SPI programmable

? On-chip voltage regulator for 1.8, 2.5, or 3.3 V ±10 operation

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

? Pb-free, ROHS compliant

Applications

? SONET/SDH OC-48/OC-192 line cards

? GbE/10GbE, 1/2/4/8/10GFC line cards

? ITU G.709 and custom FEC line cards

? Optical modules

? Wireless basestations

? Data converter clocking

? xDSL

? SONET/SDH + PDH clock synthesis

? Test and measurement