SI5335D-B04348-GMR

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Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

The Silicon Labs SI5335D-B04348-GMR is a flexible, fully-integrated timing generator combining a wide frequency range up to 500.0MHz and a dual-loop, Spread-Spectrum programmable PLL supporting jitter-optimized clock generation in networking, telecom and consumer electronics applications.

The SI5335D-B04348-GMR includes an oscillator which can drive frequencies from 150 MHz up to 500 MHz. The PLL synchronizes to external clock inputs from 25MHz to 350MHz and can generate clock outputs from any of the inputs. The jitter meeting the requirements of stringent standards may be achieved through fractional-N divider implementation and spread-spectrum clock output.

The SI5335D-B04348-GMR is designed with a digital signal processor that allows it to be programmed and configured with Silicon Labs\' ClockBuilder Pro software suite. The software provides robust testing and programming of fractional-N and spread-spectrum clock-generation functions supported in the device.

The SI5335D-B04348-GMR includes a comprehensive feature set to adapt to application and environmental variation such as spread-spectrum frequency settings, master or slave operation, and feedback loop damping settings. The device also provides data output port configuration options and phase offset settings to allow end-customer flexibility.

The SI5335D-B04348-GMR is offered in a 16-pin, 4x4 mm side-brazed QFN or a 14-pin, SOIC package. It operates from a 1.8V supply voltage and supports industrial temperature range from -40°C to +85°C.

The working principle of the SI5335D-B04348-GMR is based on the operation of a voltage-controlled oscillator (VCO) that is modulated by a digital signal processor (DSP). The DSP contains a phase detector and a loop filter. The phase detector measures the phase difference between its two inputs, which are either from a reference clock or from another VCO. This phase difference controls the voltage of the loop filter and adjusts the VCO frequency.

The VCO then outputs a clock signal that is fed to Field Programmable Clock Divider (FPCD). The FPCD is programmed using ClockBuilder Pro software and its output is used to generate clock signals with various frequencies and edge rates. A fractional-N divider is then used to create more precise clock signals to meet jitter requirements. A spread-spectrum output can also be generated by adding a dithering signal to the VCO output.

The SI5335D-B04348-GMR can be used in a wide range of applications, including telecom and networking systems, monitors, industrial equipment, and consumer electronics. It can also be used to generate clocks for complex multi-processor SoC architectures. The device\'s operating temperature range makes it suitable for a range of applications, including automotive and avionics, as well as aerospace and defense.

In summary, the Silicon Labs SI5335D-B04348-GMR is a highly integrated timing generator combining a wide frequency range up to 500.0MHz and a dual-loop, Spread-Spectrum programmable PLL. The device can be programmed and configured with Silicon Labs\' ClockBuilder Pro software suite, and its output port can be used to generate clock signals with various frequencies and edge speeds to meet jitter requirements. The device is suitable for a wide range of applications, including telecom and networking systems, monitors, industrial equipment, and consumer electronics.

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