Description

The Si5322 is a low jitter, precision clock multiplier for high-speed communication systems, including SONET OC-48/OC-192, Ethernet, and Fibre Channel. The Si5322 accepts dual clock inputs ranging from 19.44 to 707 MHz and generates two equal frequency multiplied clock outputs ranging from 19.44 to 1050 MHz. The input clock frequency and clock multiplication ratio are selectable from a table of popular SONET, Ethernet, and Fibre Channel rates.

Features

„ Selectable output frequencies ranging from 19.44 to 1050 MHz

„ Low jitter clock outputs with jitter generation as low as 0.6 psRMS(50kHz–80MHz)

„ Integrated loop filter with selectable loop bandwidth(30 kHz to 1.3 MHz)

„ Dual clock inputs with manual or automatically controlled hitless switching

„ Dual clock outputs with selectable signal format: LVPECL, LVDS, CML, CMOS

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

„ LOS alarm output

„ Pin-controlled output phase adjust

„ Pin-programmable settings

„ 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 line cards

„ Optical modules

„ Test and measurement