SI5338H-B08548-GMR

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The SI5338H-B08548-GMR is an integrated clock generator and jitter attenuator that belongs to the Clock/Timing - Application Specific category. The device is designed to accurately generate multiple high-performance output frequencies from a single reference clock input. The device utilizes Silicon Labs’ proprietary Integrated FemtoClock PLL technology for low jitter and wide frequency range outputs.

Features of the SI5338H-B08548-GMR

• Integrates phase-locked loop (PLL) and jitter attenuation for low jitter
• Integrated output drivers for up to 8 differential clock outputs
• Wide frequency range of 2.5 to 950 MHz
• Low power mode suitable for low-power operations
• Integrated Spread Spectrum control to reduce EMI

Application Fields

The SI5338H-B08548-GMR is a application-specific clock/timing device that can be used to address a wide variety of timing solutions. Typical applications include data communications, video/imaging, telecommunications, broadcast, consumer electronics, solid-state lighting, robotics, process control, and medical electronics. The device is especially well-suited for networks and communications applications where reliability is a key concern.

Working Principle

The SI5338H-B08548-GMR is based on Silicon Labs’ proprietary Integrated FemtoClock PLL technology. The device is able to generate multiple high-performance output frequencies from a single reference clock input. The device utilizes a low-cost voltage-controlled oscillator (VCO) to generate an accurate clock signal. The VCO signal is divided down to provide different output frequencies. The input reference clock is compared to the VCO output frequency to perform phase correction. The frequency of the VCO is then adjusted to match the input reference frequency, and the corrective signal is used to dynamically adjust the VCO frequency.

The device also incorporates a jitter attenuator for further noise reduction. The jitter attenuator uses a narrow bandwidth filter to reduce jitter in the output signal. Once the output frequency of the PLL has been determined, the jitter attenuator conducts the necessary phase lock loop (PLL) calculations in order to determine the correct compensation values for phase and frequency noise reduction.

Conclusion

The SI5338H-B08548-GMR is a Clock/Timing - Application Specific device that is designed to generate multiple high-performance output frequencies from a single reference clock input. The device utilizes Silicon Labs’ proprietary Integrated FemtoClock PLL technology and a jitter attenuator for low jitter and wide frequency range output. The device is suitable for a wide variety of applications, including data communications, video/imaging, telecommunications, broadcast, consumer electronics, and much more.

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