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Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

The Silicon Laboratories SI5335D-B02751-GMR Clock Generator is a highly integrated, low phase noise, jitter attenuator, fanout buffer and clock mux or source select device that supports multiple high speed and low jitter outputs for different interfaces. It offers the correct combination of performance, cost and flexibility to satisfy applications from entry level feature phones up to the most advanced smartphones.

The SI5335D-B02751-GMR’s Clock Generator is a highly integrated, best-in-class jitter attenuator that can easily integrate into any system. On-chip,there is a buffered PLL and VCO, as well as an integrated, multi-bit LDO. All of these features help to simplify system design and reduce design costs. The SI5335D-B02751-GMR also offers a variety of integrated features and flexibility to maximize system performance and minimize system complexity.

Application Fields

The SI5335D-B02751-GMR is suitable for a wide range of applications including mobile handsets, digital broadcasting and digital management. It has a frequency up to 192 MHz and is powered by a low power 1.8/2.1V supply. In addition, it can support multiple output frequencies, from 24.5MHz to 192MHz and the output frequency range can be adjusted by a single end input frequency (SEIF). It can also support output data rate up to 125 MHz with multiple types of output signals.

The SI5335D-B02751-GMR can also support DDR2/3 3 PLLs and complex control/data multiplexing schemes, as well as high order jitter attenuation and clock stability. This makes the device suitable for a wide range of applications, such as mobile handsets, digital broadcasting, digital management systems, video burst interfaces, and embedded applications.

Working Principles

The SI5335D-B02751-GMR has two inputs: divided clock input and input frequency. The device then uses a PLL to multiply the divided clock signal according to user-defined settings. It then constructs a stable output clock with embedded jitter attenuation. The device also contains an LDO for powering the device and other circuitry, such as a Band-Pass-Filter, to ensure clean signal output.

The device also uses several different components to provide optimum output waveforms and jitter attenuation. These components are the clock generator, the PLL, the jitter attenuator, and the Output Multiplexer. The clock generator is used to generate the output clock waveforms according to user-defined settings. The PLL then multiplies the input frequency to create a stable output frequency. The jitter attenuator then attenuates the jitter created by the clock generator, while the Output Multiplexer is used to multiplex data and control signals.

In addition, the SI5335D-B02751-GMR also includes an on-chip Voltage-Controlled Temperature Coefficient (VCTCXO). This provides the flexibility to adjust the output frequency range over a wide frequency range and allows the device to be compatible with different operating temperature ranges. This also allows the device to maintain its accuracy and stability over its entire operating temperature range.

The SI5335D-B02751-GMR also includes an on-chip spread-spectrum modulator, which provides additional flexibility to reduce RFI interference from other systems. This feature also allows the device to meet the toughest EMC standards, ensuring that the device is suitable for a wide range of applications.

Conclusion

The Silicon Laboratories SI5335D-B02751-GMR Clock Generator is a highly integrated, low jitter and low phase noise device that can support multiple high speed and low jitter outputs. It is suitable for a variety of applications, including mobile handsets, digital broadcasting, digital management systems, and more, due to its wide frequency output range and low phase noise. Furthermore, the integrated features of the device allow for superior jitter attenuation and clock stability, ensuring reliable operation and compatibility with a wide range of systems.

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