SI5350A-B12932-GM1

Clock Generators, PLLs, Frequency Synthesizers Overview

The Si5350A-B12932-GM1 is a factory-programmable CMOS clock generator manufactured by Skyworks Solutions. It utilizes a PLL and MultiSynth architecture to generate up to eight non-integer-related frequencies ranging from 2.5 kHz to 200 MHz with 0 ppm error. The device operates on a 25 or 27 MHz crystal reference and supports glitchless frequency changes, configurable spread spectrum, and static phase offsets. It features separate core (VDD) and output (VDDO) supply pins supporting 1.8 V, 2.5 V, or 3.3 V levels. The GM1 suffix indicates a 4-output configuration in a 20-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple independent clock frequencies from a single crystal reference
• Supports pin-controlled glitchless frequency switching for specific outputs
• Configurable spread spectrum modulation for EMI reduction
• Integrated internal load capacitors eliminate external crystal components

Clock Generators, PLLs, Frequency Synthesizers Applications

• HDTV and Blu-ray players
• Set-top boxes and residential gateways
• Servers and storage systems
• Printers and scanners

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the factory-programmed part number matches the required frequency plan. Confirm the 20-QFN package type aligns with board layout constraints. Ensure ClockBuilder Pro software is used to validate the specific configuration data associated with this unique ordering suffix before integration.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this variant when four distinct clock outputs are required within a compact footprint. The 20-QFN package provides thermal performance superior to the MSOP option. Verify that the application requires pin-based control logic rather than I2C programming, as this model lacks digital interfaces.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5350 family of custom clock generators. It serves as a direct replacement for multiple discrete crystals and oscillators. The 'B' designation identifies it as a factory-programmed unit, distinguishing it from blank devices intended for user programming via ClockBuilder Pro.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5350A-Bxxxxx-GT: Offers identical functionality but provides three outputs in a 10-MSOP package instead of four outputs in a 20-QFN.