SI5351A-B06527-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5351A-B06527-GMR is a factory preprogrammed I2C-configurable CMOS clock generator from the Si5351 series. It generates up to eight non-integer-related frequencies ranging from 2.5 kHz to 200 MHz with zero ppm frequency synthesis error. The device utilizes an internal oscillator and accepts a fixed-frequency crystal reference of 25 or 27 MHz. It features low output period jitter, typically less than 70 ps peak-to-peak, and supports configurable spread spectrum modulation at each output. The component operates within a temperature range of -40°C to +85°C and is housed in a 20-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple independent, non-integer-related clock frequencies using high-resolution MultiSynth fractional dividers
• Configurable spread spectrum modulation selectable at each individual output for EMI reduction
• Supports static phase offset adjustment and programmable rise/fall time control
• Provides glitchless frequency changes and separate voltage supply pins for level translation

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 suffix B06527 against the target design requirements before procurement. Confirm that the 20-QFN package dimensions align with the PCB land pattern. Ensure the I2C interface voltage levels match the system controller logic.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this variant when a fixed, factory-defined clock tree is required without on-site programming. The Si5351A architecture relies solely on an internal oscillator and external crystal, lacking the VCXO found in the Si5351B or the CLKIN input of the Si5351C. Verify that the maximum output frequency and number of outputs meet the application needs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Skyworks Si5351 family of programmable clock generators. The 'A' designation indicates it uses an internal oscillator for free-running clocks. The 'Bxxxxx' suffix denotes a unique factory preprogrammed configuration created via ClockBuilder Pro software. The 'GMR' suffix specifies the tape and reel packaging format for surface-mount assembly.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5351A-B-GM (Blank Configuration)

Clock Generators, PLLs, Frequency Synthesizers FAQ

Does the SI5351A-B06527-GMR include a Voltage Controlled Crystal Oscillator (VCXO)?

No, the Si5351A variant does not include a VCXO. Only the Si5351B version provides the integrated VCXO functionality.

What is the typical period jitter performance of this device?

The typical output period jitter is less than 70 ps peak-to-peak, measured under standard operating conditions.

Can the output frequencies be modified after manufacturing?

No, the B06527 suffix indicates a factory preprogrammed part. The configuration is fixed and cannot be reconfigured via I2C like the blank versions.