SI5351A-B02131-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5351A-B02131-GMR is a factory preprogrammed I2C programmable clock generator from Skyworks Solutions. It generates up to eight non-integer-related frequencies ranging from 2.5 kHz to 200 MHz using an internal oscillator and MultiSynth fractional dividers. The device operates on a core supply voltage of 2.25 V to 3.6 V and output buffer voltages of 1.71 V to 3.6 V. It features low period jitter, typically less than 70 ps peak-to-peak, and supports spread spectrum modulation. The component is housed in a 20-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple independent non-integer-related frequencies with zero ppm synthesis error
• Configurable spread spectrum modulation selectable at each output
• Supports static phase offset and glitchless frequency changes
• Separate voltage supply pins provide level translation for core and output buffers

Clock Generators, PLLs, Frequency Synthesizers Applications

• Audio/video equipment
• Printers, scanners, projectors
• Handheld instrumentation
• Laser range finders
• Residential gateways

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory preprogrammed configuration associated with the B02131 suffix against the design requirements before procurement. Confirm that the 20-QFN package dimensions match the PCB footprint. Ensure the I2C address settings align with the system bus topology. Check RoHS compliance status if required by local regulations.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when replacing crystals or oscillators with a need for multiple asynchronous clock domains. The Si5351A variant is suitable for designs requiring only free-running clocks without external reference synchronization. Consider the power consumption and thermal characteristics relative to the number of active outputs. Verify compatibility with the host controller's I2C interface speed.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5351 family of CMOS clock generators. It utilizes the MultiSynth architecture to replace discrete timing components. The 'A' designation indicates it uses an internal oscillator for free-running operation. The 'B02131' suffix denotes a specific factory preprogrammed frequency plan. The 'GMR' suffix indicates tape and reel packaging.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5351A-B02131-GM

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency supported by the Si5351A?

The device can generate any frequency up to 200 MHz on each of its outputs.

Does the Si5351A support synchronous clock generation?

No, the Si5351A generates free-running clocks using an internal oscillator. Synchronous generation requires the Si5351C variant which accepts an external CLKIN.

How is the crystal load capacitance configured?

Internal load capacitors are provided and can be selected to be 0, 6, 8, or 10 pF. Additional external load capacitance of less than 2 pF can be used if needed.