SI5338N-B03677-GMR

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SI5338N-B03677-GMR Application Field and Working Principle

The SI5338N-B03677-GMR is a clock/timing - application specific device. It is a highly integrated, low noise and low power consumption PLL frequency synthesizer. This 28 lead, 5mmx5 mm SQFN package device clocks supports for a wide frequency range from 12 KHz to 800 MHz and comes with 8 selectable output. Therefore this device is designed for any system requiring a high resolution clock. Some applications include communication, enterprise computing, embedded system, consumer electronics, instrumentation and test equipment.

This device offers single loop, dual loop, fan out, and spread spectrum technologies to reduce EMI and noise in applications. The device has an internal or external reference clock for synchronization, so users can easily consider gain precision and ultra-low jitter performance. It can be configured as either integer-N or fractional-N synthesis mode based on external oscillator available.

Internal Structures and Working Principle

The SI5338N-B03677-GMR is made up of two main components. The first component is the PLL frequency synthesizer which is based on SERDES and includes an internal charge pump, dividers and phase detectors. This component takes in a reference input and generates a desired output frequency. The second component is an internal Voltage Control Oscillator (VCXO). This component uses the output from the PLL to determine the correct operating frequency.

The device operates by dividing a master reference clock down to a desired reference frequency. This reference frequency is then sent to the PLL for frequency multiplication. By altering the feedback loop impedance, the PLL is able to adjust the output frequency to the desired output frequency. The output is then sent to the VCXO where it is compared to the desired frequency. If the output is higher or lower than the desired frequency, the VCXO will adjust the frequency of the clock output to the desired frequency.

Conclusion

The SI5338N-B03677-GMR is a highly integrated and versatile clock/timing-specific component. It is able to offer users a variety of applications with low noise and low power consumption. With its internal and external reference clock, users can achieve gain precision and ultra-low jitter performance and maintain a desired frequency output. The device offers single loop, dual loop, fan out, and spread spectrum technologies to reduce EMI and noise. In this way, the SI5338N-B03677-GMR is suitable for communication, enterprise computing, embedded system, consumer electronics, instrumentation and test equipment applications.

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