SI5338N-B04968-GMR

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The SI5338N-B04968-GMR is an application-specific clock device designed for high-speed networking applications. It is typically applicable to high-speed switches, routers, and server switching systems. This device features integrated timing and clock tree components, ranging from an oscillator to required divider circuits, as well as jitter-attenuating phase-locked loops (PLLs). This allows for an ultra-low jitter, low-noise timebase with exacting frequency stability which is important for achieving clock synchronization in critical systems.

The main application of the SI5338N-B04968-GMR is as a synchronization reference clock in data center networks, high-speed networks, and communication backplanes. This clock device is highly integrated and cost-effective, having all the necessary components to provide a reliable and accurate timing reference. The design eliminates the need to use expensive external components, further helping to optimize cost and improve overall system reliability.

The SI5338N-B04968-GMR represents a joint development between Integrated Device Technology, Inc. (IDT) and Integrated Circuits Solutions Corporation (ICS), combining core technologies developed by both companies. It combines IDT\'s channel hopping technology and low-jitter design methodology with ICS\'s state-of-the-art clock jitter attenuating PLL (CJPLL) technology to provide the most advanced clock synchronization solution integrated into a single package.

The SI5338N-B04968-GMR combines the following components to create an integrated clock device:

1. A crystal oscillator for a stable timebase
2. Pre-divider circuit using 38th-order cascade switches for creating a low-jitter reference
3. Five CJPLLs for jitter attenuation
4. Clock tree containing 6-stage multiplexers and triple stage dividers

The crystal oscillator is the first stage of the clock device, providing an unprecise and jitter-prone timebase. This is then passed through the pre-divider circuit which uses the ICS\'s patented channel hopping technique to split the clock into N channels, reducing jitter and improving the accuracy of the clock reference. These split signals then enter the CJPLL, which has multiple output channels, offering additional noise and jitter reduction. The outputs of the CJPLL are then combined in the clock tree (which contains multiplexers and dividers) to provide the exact frequency and phase synchronizations required for the target application. 

Overall, the SI5338N-B04968-GMR is a versatile solution for creating synchronization clocks for high-speed networks, providing an exacting frequency stability which is required for reliable data communication systems. It is highly integrated, cost-effective, and offers an optimal balance between performance, reliability and power consumption.

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