Description

The Si5319 is a jitter-attenuating precision M/N clock multiplier for applications requiring sub 1 ps jitter performance. The Si5319 accepts one clock input ranging from 2 kHz to 710 MHz and generates one clock output ranging from 2 kHz to 945 MHz and select frequencies to 1.4 GHz. The Si5319 can also use its crystal oscillator as a clock source for frequency synthesis. The device provides virtually any frequency translation combination across this operating range. The Si5319 input clock frequency and clock multiplication ratio are programmable through an I2C or SPI interface.

Features

Generates any frequency from 2 kHz to 945 MHz and select frequencies to 1.4 GHz from an input frequency of 2 kHz to 710 MHz

Ultra-low jitter clock outputs with jitter generation as low as 0.3 ps rms (50 kHz–80 MHz)

Integrated loop filter with selectable loop bandwidth (60 Hz to 8.4 kHz)

„Meets OC-192 GR-253-CORE jitter specifications

Clock or crystal input with manual clock selection

Clock output selectable signal format (LVPECL, LVDS, CML, CMOS)

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

Supports various frequency translations for Synchronous Ethernet

LOL, LOS alarm outputs

I2C or SPI programmable

On-chip voltage regulator for 1.8 V ±5, 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/STM-16 and OC-192/STM-64 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

Synchronous Ethernet

Test and measurement

Discrete PLL replacement

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