SI5351A-B02631-GTR

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The SI5351A-B02631-GTR is a clock generator and frequency synthesizer using an adjustable-frequency crystal and high-performance digital feedback loop. The SI5351A-B02631-GTR acts as a digital PLL, competing the output frequency with a reference frequency of 32.768kHz or 60kHz, generated from a high-performance XO. The precise multiplication rate is adjustable on the board, giving the user the ability to generate clock or timing signals anywhere from 1Hz to 100MHz.

The SI5351A-B02631-GTR is tailored for use in a variety of applications requiring precise clock synchronization. This includes RF applications such as cellular base-station infrastructure, radios, and test and measurement equipment. It can also be used in fan controllers, automotive power systems, Ethernet switches and routers, and a multitude of embedded, consumer, industrial, and medical applications requiring fast, accurate clock synchronization.

The SI5351A-B02631-GTR is powered by an external supply. It supports an operating temperature range from –40 to +85 °C and is available in a 3.3V and 5V option. The module is built with either a 4mm or 8mm XO and requires an external crystal.

The working principle of the module lies in the phase-locked loop (PLL). A power supply provides the power to the target clock frequency, which is then fixed to the reference frequency supplied by the XO. This phase-locked loop is then held in equilibrium as long as the instantaneous phase difference between the signals is below the threshold determined by the loop gain. If a phase difference occurs, the loop gain adjusts to bring the signals back into phase. As a result, the output of the PLL is a stable, precise frequency that accurately reflects the reference frequency supplied by the XO.

The SI5351A-B02631-GTR is an ideal device for applications requiring precise clock synchronization and is suitable for a wide range of applications. It offers superior performance in a compact package and features an adjustable-frequency crystal and high-performance digital feedback loop for stability and accuracy.

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