SI5350A-B04682-GTR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Si5350A-B04682-GTR is a factory-programmable CMOS clock generator manufactured by Skyworks Solutions. It utilizes a PLL and high-resolution fractional divider 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 single supply voltage of 1.71 V to 3.6 V for both core and output buffers, consuming approximately 25 mA typically. It supports configurable spread spectrum, static phase offset, and glitchless frequency changes. The component is housed in an 8-pin QFN package and requires a 25 MHz or 27 MHz crystal reference.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple independent clock frequencies from a single crystal reference
• Supports pin-controlled glitchless frequency switching between two pre-configured rates
• Features user-selectable spread spectrum modulation for EMI reduction
• Provides separate voltage supplies for core logic and output buffers

Clock Generators, PLLs, Frequency Synthesizers Applications

• HDTV and Blu-ray player systems
• Set-top boxes and residential gateways
• Printers, scanners, and projectors
• Servers and storage arrays
• Networking and communication equipment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory programming code 'B04682' matches the required frequency plan before integration. Confirm the GTR suffix indicates tape and reel packaging suitable for automated assembly. Ensure the design accommodates the 8-pin QFN footprint and thermal requirements specified in the datasheet.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a cost-effective replacement for multiple discrete oscillators is needed. Choose the Si5350A over the Si5351 if I2C programmability is not required and fixed factory programming suffices. Verify that the required output count fits within the 8-output limit and that the 200 MHz maximum frequency meets system timing needs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5350 family of clock generators designed to replace crystals and oscillators. The 'A' variant specifically supports only crystal input references, distinguishing it from 'B' and 'C' variants that support additional input types like VCXO or external clock signals.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other factory-programmed Si5350A variants with different output counts, such as the 3-output Si5350A-Bxxxxx-GT (MSOP) or 4-output Si5350A-Bxxxxx-GM1 (QFN). Cross-family substitution with Si5351A requires verifying interface differences, as the Si5351 uses I2C configuration rather than pin-based control.