SI5351A-B05945-GT

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5351A-B05945-GT is an I2C-programmable CMOS clock generator featuring three LVCMOS outputs in a 10-MSOP package. It generates frequencies up to 200 MHz with 0 ppm error using a PLL and MultiSynth architecture. The device operates on a core supply of 2.5 V or 3.3 V and output supplies of 1.8, 2.5, or 3.3 V. It requires a 25 or 27 MHz crystal reference and delivers typical period jitter under 70 ps. Factory preprogrammed for specific frequency plans.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• I2C programmable configuration for custom frequency synthesis
• Zero ppm error generation across the full frequency range
• Factory preprogrammed for immediate deployment without user configuration
• Low power consumption with independent voltage supply domains

Clock Generators, PLLs, Frequency Synthesizers Applications

• XO replacement in cost-sensitive designs
• Networking and communication equipment
• Servers and storage systems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the factory preprogrammed frequency plan matches the design requirements before ordering. Confirm the 10-MSOP package availability and lead times through authorized distributors. Ensure the specific B05945 suffix corresponds to the intended clock configuration.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a fixed, factory-defined clock solution is preferred over user-programmable variants. The Si5351A variant supports only XTAL references, unlike the Si5351B which includes a VCXO. Verify that the required output count does not exceed three for the MSOP package.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5351 family of I2C programmable clock generators. The 'A' designation indicates XTAL-only reference support, while the 'Bxxxxx' suffix denotes a unique factory preprogrammed configuration code generated via ClockBuilder Pro software.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5351A variants with different preprogrammed codes (e.g., SI5351A-Bxxxxx-GT). For user-programmable flexibility, consider the blank version SI5351A-B-GT.