SI5350C-B04506-GT

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5350C-B04506-GT is a factory-programmable CMOS clock generator featuring a dual PLL and MultiSynth fractional divider architecture. It generates up to eight non-integer-related frequencies ranging from 2.5 kHz to 200 MHz with 0 ppm error. The device supports glitchless frequency changes, configurable spread spectrum, and static phase offsets. It operates from a low-cost fixed-frequency crystal (25 or 27 MHz) or an external reference clock input (10–100 MHz). Supply voltages for the core and outputs are independently selectable at 1.8 V, 2.5 V, or 3.3 V. The part is housed in a 20-QFN package providing eight output clocks.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates free-running and synchronized clocks using a dual PLL architecture
• Supports exact frequency synthesis with zero parts-per-million error
• Allows glitchless frequency transitions via user-configurable control pins
• Features independent voltage supply pins for level translation

Clock Generators, PLLs, Frequency Synthesizers Applications

• HDTV, DVD/Blu-ray, and set-top box systems
• Audio/video equipment and gaming consoles
• Printers, scanners, and projectors
• Handheld instrumentation devices
• Residential gateways and networking communication equipment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory programming configuration associated with the B04506 suffix against the required system timing specifications. Confirm that the 20-QFN package dimensions and pinout align with the target PCB land pattern. Ensure the selected crystal frequency matches the device's supported inputs of 25 MHz or 27 MHz if utilizing the internal oscillator.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source. The dual PLL architecture enables synchronous and free-running clocks simultaneously. Verify that the output count meets the design needs, as this variant provides eight outputs. Consider the power consumption requirements, noting typical core current varies with the number of active outputs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device belongs to the Si5350 family of factory-programmable clock generators. It serves as a replacement for discrete crystals, oscillators, and PLL circuits. The Si5350C specifically supports both crystal and external clock inputs, offering greater flexibility than variants restricted to crystal-only operation.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5350C variants with different output counts or packages, such as the 10-MSOP or 16-QFN versions, provided the custom timing configuration is replicated. Generic clock generators lacking the MultiSynth architecture may not support glitchless frequency changes or identical jitter performance.