Si5328 Synchronous Ethernet Clock
Skyworks Solutions Inc. Si5328 Synchronous Ethernet Clock is a jitter-attenuating precision clock multiplier for Synchronous Ethernet applications requiring sub 1ps jitter performance and ultra-low loop bandwidth. When combined 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 8kHz to 710MHz and generates two output clocks ranging from 8 kHz to 808MHz. The two outputs are divided down separately from a common source. The Si5328 can also use the TCXO as a clock source for frequency synthesis. The device provides virtually any frequency translation combination across this operating range. The Si5328 input clock frequency and clock multiplication ratio are programmable through an I2C or SPI interface.
