describe
The Si5328 is a jitter attenuation precision clock multiplier used to synchronize Ethernet applications, requiring jitter performance of less than 1 ps and ultra-low loop bandwidth. When combined with a low drift, low jitter reference oscillator, the Si5328 meets all drift, MTIE, TDEV, and other requirements listed in ITU-T G.8262/Y.1362.
The Si5328 accepts two input clocks from 8 kHz to 710 MHz and generates two output clocks from 8 kHz to 808 MHz. The two outputs are separated from a common source. The Si5328 can also use TCXO as a clock source for frequency synthesis. The device provides almost any combination of frequency conversions within this operating range.
The Si5328 input clock frequency and clock multiplication ratio can be programmed through the I2C or SPI interface. Si5328 is the third generation DSLL based on Silicon Lab ® Technology that provides frequency synthesis and jitter attenuation in a highly integrated PLL solution, eliminating the need for external VCXO and loop filter components.
The DSLL loop bandwidth is digitally programmable, providing jitter performance optimization at the application level. Running from a single 2.5 or 3.3 V power supply, the Si5328 is the ideal choice for Ethernet timing applications that provide clock multiplication and jitter attenuation in high-performance, synchronous Ethernet timing applications.
features
• Fully compliant with ITU-T
G.8262, EEC options 1 and 2.
• Generate any frequency from
8 kHz to 808 MHz.
• Ultra low jitter clock output
Jitter generation as low as 0.3 ps
Root mean square (12 kHz – 20 MHz)
• Integrated loop filter
Selectable loop bandwidth
(0.1 Hz; 1 to 10 Hz)
• Dual clock input with manual or
Automatic control miss
switch
• Dual clock output with
Optional signal format
（LVPECL、LVDS、CML、CMOS）
• LOL, LOS, FOS alarm outputs
• Me
2C or SPI programmable
• On chip voltage regulator for
2.5 ± 10% or 3.3 V ± 10%
activity
• Small size: 6 x 6 mm 36 lead
Quality Fund
• Lead free, ROHS compliant
application
• G.8262 synchronous Ethernet,
EEC Options 1 and 2
GbE/10GbE/100GbE
Synchronous Ethernet
• Operator Ethernet switches,
Router
