SI5351A-B02449-GT

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5351A-B02449-GT is a factory preprogrammed I2C-configurable CMOS clock generator. It generates up to eight non-integer-related frequencies ranging from 2.5 kHz to 200 MHz with 0 ppm error using an internal oscillator and MultiSynth fractional divider architecture. The device operates on a core supply voltage of 2.5 V or 3.3 V and output buffer voltages of 1.8, 2.5, or 3.3 V. It features low period jitter typically less than 70 ps peak-to-peak and supports configurable spread spectrum modulation at each output.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple independent, non-integer-related clock frequencies from a single reference crystal
• Provides exact frequency synthesis with zero parts-per-million error across all outputs
• Supports glitchless frequency changes and static phase offset adjustments for precise timing control

Clock Generators, PLLs, Frequency Synthesizers Applications

• Replacing discrete crystals, crystal oscillators, and VCXOs in cost-sensitive designs
• Providing clock signals for networking and communication equipment
• Generating system clocks for servers and storage arrays
• Supplying timing references for audio/video equipment and handheld instrumentation

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory preprogrammed configuration code associated with the suffix B02449 against the target design requirements before procurement. Confirm that the required output frequencies and package type match the datasheet specifications for this variant. Ensure compatibility with the intended I2C interface voltage levels.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a fixed-frequency solution is preferred over user-programmable variants to reduce development time. Verify that the maximum output frequency requirement does not exceed 200 MHz per pin. Check if the available packages (MSOP-10, QFN-16, or QFN-20) meet the board space constraints and ensure the number of required outputs aligns with the selected package pin count.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5351 family of programmable clock generators manufactured by Skyworks Solutions. The 'A' designation indicates it utilizes an internal oscillator for free-running clock generation without requiring an external reference clock input. The 'B' suffix denotes the specific hardware revision or feature set within the broader Si5351 product line.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other factory preprogrammed variants within the Si5351A series, such as SI5351A-Bxxxxx-GM or SI5351A-Bxxxxx-GT, provided the custom frequency plan matches exactly. Generic Si5351A blank parts can be used if reprogramming via ClockBuilder Pro software is feasible.