SI5351B-B06014-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5351B-B06014-GMR is an I2C-programmable CMOS clock generator featuring an integrated VCXO. It generates up to eight independent non-integer-related frequencies ranging from 2.5 kHz to 200 MHz with 0 ppm synthesis error. The device operates on a core supply voltage (VDD) of 2.25 V to 3.6 V and supports output buffer voltages (VDDO) of 1.71 V, 2.5 V, or 3.3 V. It utilizes a 25 MHz or 27 MHz crystal reference and provides low period jitter typically less than 70 ps peak-to-peak. The component is housed in a 20-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates a highly linear VCXO to eliminate the need for custom pullable crystals while supporting synchronous clock generation.
• Generates multiple asynchronous and synchronous clock domains simultaneously using dual PLLs and high-resolution MultiSynth fractional dividers.
• Configurable spread spectrum modulation and glitchless frequency changes allow for optimized EMI performance without signal interruption.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Replacing traditional crystals, crystal oscillators, and VCXOs in cost-sensitive designs
• Networking and communication equipment requiring precise timing synchronization
• Servers and storage systems needing flexible clock domain management

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the factory preprogrammed configuration code 'B06014' matches the required frequency plan before integration. Confirm that the GMR suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly processes.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this variant over the Si5351A when internal VCXO functionality is required for synchronous applications. Choose the Si5351C if an external CLKIN reference is preferred over the internal oscillator. Ensure the design accommodates the specific load capacitance requirements for the 25/27 MHz reference crystal.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5351 family of programmable clock generators. The 'B' designation specifically denotes the inclusion of an internal Voltage-Controlled Crystal Oscillator (VCXO), distinguishing it from the free-running Si5351A and the externally referenced Si5351C.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same series include SI5351B-Bxxxxx-GM variants with different factory presets. For applications not requiring VCXO features, SI5351A or SI5351C equivalents may be considered if pin compatibility and feature sets align.