AD9549/PCBZ, Evaluation Board for Evaluating the AD9549 8kHz to 750MHz Input Clock Generator
参考設計 著者: Analog Devices
AD9549/PCBZ, Evaluation Board for the AD9549 provides synchronization for many systems, including synchronous optical networks (SONET/SDH). The AD9549 generates an output clock, synchronized to one of two external input references of 8 kHz to 750 MHz. The external references may contain significant time jitter, also specified as phase noise. Using a digitally controlled loop and holdover circuitry, the AD9549 continues to generate a clean (low jitter), valid output clock during a loss of reference condition, even when both references have failed
