8402AYILFT

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The 8402AYILFT is a combination IC device made up of a low jitter PLL, VCXO, and fractional-N synthesis to generate low jitter clock frequencies for a variety of timing applications. It is suitable for use in timing applications where high performance and low-jitter signal sources are essential. This device is part of the Networking, Telecommunications and Computers (NTC) product family. The 8402AYILFT is especially useful for generating high-performance, low-jitter clocks for use in ASICs, FPGAs, and VLSI designs.

Application Field

The 8402AYILFT is designed for applications where it is necessary to generate low jitter clock signals. Low jitter clocks are essential in many networking and communications applications where timing is a critical area of performance, such as:

• Gigabit Ethernet
• SONET/SDH
• Gigabit/10 Gigabit Fibre-Channel
• Networking backplanes
• High-speed storage area networks
• High-speed memory buses
• Microprocessor and chip set clock trees
• Telecommunications applications
• PCI Express
• Wireless broadband

The 8402AYILFT is suitable for use in low power applications, such as portable electronic devices, where low power and high performance requirements must be met.

Working Principle

The 8402AYILFT is a combination IC device made up of a low jitter PLL, VCXO, and fractional-N synthesis to generate low jitter clock frequencies for a variety of timing applications. It is designed to offer superior jitter performance with the flexibility to programably switch between a variety of frequencies. The device uses a combination of a VCXO and a fractional-N synthesizer to achieve the highest jitter specifications. The 8402AYILFT consists of a low jitter PLL, a VCXO, and a fractional-N synthesis scheme to generate frequency sources or program clock outputs.

The PLL is used for low jitter, high resolution signal conversion. It operates in closed loop with feedback from the VCXO. The PLL output is then multiplied by the fractional-N synthesizer to generate higher frequencies from lower resolution sources. This results in the generation of low jitter, high resolution signal outputs. The VCXO is used to supplement the PLL to ensure high levels of jitter performance. The device also offers the flexibility to programably switch between frequencies.

In addition to its frequency synthesis capabilities, the 8402AYILFT offers a range of high performance features that make it suitable for a variety of timing applications. These features include: programmable reference selection, high frequency output selection, programmable output level selection, low drift VCXO operation, single-ended and differential inputs/outputs, low power consumption, and optional pins for additional timing control.

Conclusion

The 8402AYILFT is a combination IC device made up of a low jitter PLL, VCXO, and fractional-N synthesis to generate low jitter clock frequencies for a variety of timing applications. With its combination of a low jitter PLL and VCXO, the 8402AYILFT offers superior jitter performance with the flexibility to programably switch between frequencies. The device is suitable for use in a wide range of applications, such as networking and telecommunications, where timing is critical.

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