8V19N474 Overview
The 8V19N474 is a fully integrated FemtoClock NG Jitter Attenuator and Clock Synthesizer designed as a high-performance clock solution for conditioning and frequency/phase management of 10/40/100/400 Gigabit-Ethernet line cards. The device delivers excellent phase noise performance as required to drive physical layer devices, and provides the clean clock frequencies (e.g., 625MHz, 500MHz, 312.5MHz, 250MHz,...
8V19N474 Key Features
- High-performance clock RF-PLL
- Optimized for low phase noise: -153dBc/Hz (1MHz offset; 156.25MHz clock)
- Integrated phase noise (12kHz-20MHz) of 75fs RMS typical
- Dual-PLL architecture
- 1st-PLL stage with external VCXO for clock jitter attenuation
- 2nd-PLL stage with internal FemtoClock NG PLL at 2500MHz
- Two clock banks with one integer frequency divider and three differential outputs
- Two clock banks with one integer frequency divider and two differential outputs
- One clock bank with one fractional output divider and one differential output
- One VCXO-PLL output bank with one selectable LVDS/two LVCMOS outputs