SI5394C-A-GM Datasheet/PDFClock/Timing - Clock Generators, PLLs, Frequency Synthesizers
The SI5394C-A-GM is an ultra-low jitter clock generator designed specifically for communications and high-performance digital applications involving clocks with frequencies up to 600 MHz. It is capable of generating four different frequencies from any input frequency between 10 MHz to 599.998 MHz. The SI5394C-A-GM is outfitted with a fractional-N/integer-N phase-lock loop (PLL) and provides a unique combination of features, making it ideal for high-speed communication equipment. In addition to generating multiple output frequencies, the SI5394C-A-GM offers a wide range of features, making it an excellent choice for applications requiring low power consumption.
Applications Field
The SI5394C-A-GM has a wide range of applications in Communications and High-Performance Digital applications involving clocks with frequencies up to 600 MHz. It is suitable for a variety of applications, from Frequency Division Multiplexing to Clock Clean-up. Additionally, the SI5394C-A-GM has been designed for applications such as Portable Equipment, Industrial Automation, Server/Storage and Network Equipment, Terahertz-band (THz) Integrated Circuits, Wireless Transceivers, and High-End Telecommunications Platforms.
PLL Design
The SI5394C-A-GM utilizes a fractional-N/integer-N PLL design that allows the device to generate multiple output frequencies without sacrificing its performance. The SI5394C-A-GM is outfitted with an adjustable charge-pump voltage, allowing the user to adjust the strength of the loop and improve system jitter performance. Additionally, the SI5394C-A-GM features a range of features, such as clock output selection, spread-spectrum clock outputs, low-jitter outputs, wide bandwidth PLLs, and low power consumption.
Working Principle
The SI5394C-A-GM utilizes a fractional-N/integer-N PLL design, which allows it to generate up to four independent output frequencies from a single input reference. The PLL consists of a phase detector, a filter/VCO, and a divider. The phase detector is used to compare the frequency of the input signal to the frequency of the VCO output, and generate an output signal proportional to the phase difference. The filter/VCO then takes this output signal and turns it into a voltage that is used to adjust the frequency of the VCO. The divider is used to divide the output of the VCO into the desired output frequencies. The SI5394C-A-GM also offers Spread-Spectrum Clock outputs to reduce EMI and improve system-level performance.
Conclusion
The SI5394C-A-GM is an ultra-low jitter clock generator for communications and high-performance digital applications involving frequencies up to 600 MHz. It features a fractional-N/integer-N PLL, adjustable charge-pump voltage, clock output selection, spread-spectrum clock outputs, low-jitter outputs, wide bandwidth PLLs, and low power consumption. The SI5394C-A-GM is an ideal choice for applications requiring low power consumption and improved system jitter performance.