SI5338A-B01308-GMR

Series:	*
Packaging:	Tape & Reel (TR)
Part Status:	Active
Mounting Type:	Surface Mount
Package / Case:	24-VFQFN Exposed Pad
Supplier Device Package:	24-QFN (4x4)

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Introduction

The SI5338A-B01308-GMR is a low jitter, Multiphase Clock Generator for Timing and Frequency Synthesis applications. It is designed for use in a wide variety of applications requiring precision frequency control, such as synchronous Ethernet, Synchronous Optical Network, and packet based services. This clock generator is optimized for high-speed clocking schemes, providing multiple low jitter output frequencies that can be configured and programmed to support high-performance timing networks.

Application Field

The SI5338A-B01308-GMR is an application specific clock generator designed to provide low jitter performance in frequency synthesis and timing networks. It is ideal for applications such as Synchronous Ethernet, SONET and packet based services, where precision timing and frequency control is a must. The SI5338A also provides low jitter and high accuracy clocking for other timing networks, such as high-speed data acquisition systems, RADAR, RF communications and test and measurement equipment. The clock generator provides seven selectable input frequencies, allowing for flexible and precise timing and frequency synthesis.

Working Principle

The SI5338A-B01308-GMR clock generator consists of two parts, a master oscillator and a phase locked loop (PLL). The master oscillator circuit is made up of an adjustable quartz crystal and is used to generate a clean and accurate reference frequency, while the PLL produces the clocking outputs. The master oscillator and PLL are connected by an analog-to-digital converter (ADC) which measures the difference between the reference frequency and the desired output frequency. This difference is then used to adjust the PLLs internal loop filters, thus creating the precisely tuned output frequencies.

Features and Benefits

The SI5338A-B01308-GMR clock generator offers numerous features and benefits that make it the ideal choice for high-performance timing and frequency synthesis applications. It is designed for low jitter, high accuracy clocking, with a maximum output jitter of less than 5ps (12kHz to 20MHz). Other advantages include high frequency stability, with tight tolerances maintained across a wide temperature range, and programmable multiply/divide ratios that can be configured from 1 to 10,000 times the reference frequency. The SI5338A-B01308-GMR also has adjustable slew rate and phase alignment capabilities, allowing for precise phase noise characteristics and the possibility of twin clock outputs at different phases.

Conclusion

The SI5338A-B01308-GMR is a highly versatile clock generator specifically designed to provide low jitter and high accuracy clocking for frequency synthesis and timing networks. With its low jitter performance and various frequency synthesis options, it is an ideal choice for a wide range of applications, including Synchronous Ethernet, SONET, packet based services, RADAR and test and measurement equipment. It offers a number of features and benefits, such as low output jitter, tight tolerances, programmable multiply/divide ratios, adjustable slew rate and phase alignment capabilities, making it the perfect choice for precise timing and frequency synthesis.

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