SI5351B-B06014-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5351B-B06014-GM is an I2C-programmable CMOS clock generator manufactured by Skyworks Solutions. It features a PLL/VCXO architecture with MultiSynth fractional dividers, enabling the generation of up to eight non-integer-related frequencies ranging from 2.5 kHz to 200 MHz with 0 ppm error. The device includes an internal VCXO for synchronous clock applications and supports fixed-frequency crystal references at 25 or 27 MHz. It operates on core supply voltages of 2.5 V or 3.3 V and output buffer voltages of 1.8, 2.5, or 3.3 V. The component is housed in a 20-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates up to eight independent clock outputs with zero ppm frequency error using high-resolution MultiSynth fractional dividers.
• Integrates a highly linear Voltage-Controlled Crystal Oscillator (VCXO) to replace custom pullable crystals and multiple PLLs.
• Supports configurable spread spectrum modulation selectable at each output to minimize electromagnetic interference.
• Provides glitchless frequency changes and programmable rise/fall time control for precise signal integrity management.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Replacing crystals, crystal oscillators, VCXOs, and phase-locked loops in cost-sensitive designs
• Audio and video equipment requiring precise multi-domain clocking
• Networking and communication infrastructure components
• Servers and storage systems needing low jitter synchronization

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory preprogrammed configuration associated with the B06014 suffix against system requirements before integration. Confirm that the 20-QFN package dimensions align with the target PCB land pattern. Ensure the design accommodates the recommended operating temperature range and voltage sequencing constraints specified in the datasheet.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this variant when both free-running asynchronous clocks and synchronous VCXO-controlled outputs are required within a single device. The Si5351B is appropriate for designs replacing multiple discrete timing components. Verify that the application does not require external reference clock inputs, which is a feature reserved for the Si5351C variant.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5351 family of I2C-configurable clock generators. The 'B' designation indicates the inclusion of an internal VCXO, distinguishing it from the Si5351A (XTAL only) and Si5351C (CLKIN reference). The part utilizes the MultiSynth architecture to provide flexible frequency synthesis across various consumer and industrial electronics.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5351B-B-GM is the blank version of the same functional device. Si5351A-B-GM provides identical packaging but lacks the VCXO functionality. Si5351C-B-GM offers CLKIN support instead of VCXO. Verify pin compatibility and software register configurations when substituting these variants.