SI5344D-B-GM

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The SI5344D-B-GM is a low power, Clock/Timing Clock Generator, Phase Locked Loop (PLL), and Frequency Synthesizer component manufactured by Silicon Labs. This component is composed of an Analog Front End, Digital Front End, PLL, and Clock Divider. Its function is to drive a variety of external signal requirements such as PCI-Express, SAS, SATA, and DDR bus standards.

The component utilises a high performance PLL to synthesise a wide frequency range from reference inputs to guide the internal oscillator output signals. The PLL used incorporates a fractional-N architecture and architecture with an on-chip Fractional Phase Select (FPS) frequency divider. This allows the user to precisely synthesize the desired output frequency regardless of the frequency of the reference input. Additionally, the component also features low additive jitter, wide temperature range tolerance and low power consumption.

The component also features two very versatile control mechanism: PIN programming, and I2C programming. These provide users with the option to select the desired frequency output, configure the features and set the various timings of the component.

The analog front end of the component takes input from the two reference clocks. It then converts these into digital data and sends it to the digital front end. The digital front end then processes the input data and sends it to the PLL, which is then used to generate a harmonic of the reference clock, providing the desired output frequency.

The PLL includes a feedback controller that adjusts the phase and frequency of the output signal to match the reference clock. The feedback loop is used to maintain the accuracy and stability of the generated output signals. This ensures that the synthesized outputs are within the tolerance range set by the reference input.

The component also includes a clock divider placed after the PLL. The output of the PLL is fed into this circuit, and its output is divided, adjusted, and routed to the desired output pins. This circuit is used to eliminate phase noise, divide frequencies, and is used to divide the output signal into various formats, such as multiple frequencies, multiple phase-locked signals, or a combination of the two.

The features of this component provide users with the capability to drive a variety of external signal requirements such as PCI-Express, SAS, SATA and DDR bus standards. The SI5344D-B-GM can thus be used as a low power and reliable clock generation, PLL and frequency synthesis solution for a variety of applications such as aerospace and automotive, computing, consumer electronics and communications systems.

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