SI5350C-B03478-GT

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5350C-B03478-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 10-TFSOP/10-MSOP package providing three LVCMOS outputs.

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
• Enables glitchless frequency transitions and configurable spread spectrum modulation
• Provides user-configurable control pins for output enable, power down, and frequency selection

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-programmed configuration associated with the suffix B03478 against the target system requirements. Confirm that the 10-MSOP package meets the board layout constraints. Ensure the required output frequencies fall within the supported range of 2.5 kHz to 200 MHz. Validate that the selected supply voltages align with the destination logic levels.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a custom timing solution is required without the overhead of I2C programming interfaces. The pin-programmable variant eliminates the need for external configuration controllers. Verify that the application requires only three outputs, as other package options provide four or eight outputs. Ensure the design can accommodate the necessary crystal or reference clock source.

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 multiple discrete crystals, oscillators, and PLLs. The Si5350C specifically supports both crystal inputs and external clock inputs via the CLKIN pin. It is designed to reduce board space and power consumption in portable and high-density electronic designs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other factory-programmed variants within the Si5350C family, such as SI5350C-Bxxxxx-GT. For applications requiring more outputs, consider the 16-QFN or 20-QFN packages. If I2C programmability is acceptable, the Si5351 series offers similar functionality with software configuration.