SI5351C-B06452-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5351C-B06452-GMR is an I2C-programmable CMOS clock generator from Skyworks Solutions, designed to replace crystals, oscillators, and PLLs. It features eight LVCMOS outputs capable of generating non-integer-related frequencies up to 200 MHz with 0 ppm error. The device synchronizes to an external reference clock (CLKIN) ranging from 10 to 100 MHz. Key electrical parameters include a core supply voltage of 2.5 V or 3.3 V, output buffer voltages of 1.8 V, 2.5 V, or 3.3 V, and a typical period jitter of less than 70 ps peak-to-peak. It operates within a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• I2C programmable architecture for flexible frequency synthesis
• Synchronization capability via external CLKIN input
• Zero ppm frequency synthesis error across all outputs
• Configurable spread spectrum modulation at each output

Clock Generators, PLLs, Frequency Synthesizers Applications

• XO replacement in cost-sensitive designs
• Networking and communication equipment
• Servers and storage systems
• Printers, scanners, and projectors

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory preprogrammed configuration associated with the B06452 suffix using ClockBuilder Pro software before procurement. Confirm that the required external crystal frequency matches the device's internal oscillator specifications. Ensure the design supports the necessary I2C interface levels and power sequencing requirements for reliable operation.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this variant when synchronization to an external reference clock is required rather than free-running generation. Verify that the application requires eight independent outputs. Consider the package type based on available board space, as the 20-QFN offers the full eight-output capability. Ensure the system can accommodate the specified core and output supply voltage ranges.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5351 family of programmable clock generators. The 'C' designation indicates support for an external clock input (CLKIN), distinguishing it from the A and B variants which rely on internal crystals or VCXOs respectively. The part utilizes the MultiSynth fractional divider architecture for high-resolution frequency generation.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same family include other Si5351C variants with different factory programming codes. When substituting, ensure the new part supports the same number of outputs and compatible package dimensions. Verify that the replacement part's I2C register map remains identical to maintain software compatibility.