SI5350A-B12247-GM1R

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5350A-B12247-GM1R is a factory-programmable, any-frequency CMOS clock generator manufactured by Skyworks Solutions. It utilizes a PLL and high-resolution fractional divider 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 single supply voltage of 1.8 V, 2.5 V, or 3.3 V for both core and output buffers. It features low output period jitter typically less than 70 ps peak-to-peak and supports configurable spread spectrum modulation. The component is housed in a 16-QFN (3x3 mm) package providing four independent LVCMOS outputs.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple independent, non-integer-related clock frequencies from a single crystal reference
• Supports glitchless frequency transitions and user-configurable spread spectrum for EMI reduction
• Includes programmable control pins for direct hardware management of power down, output enable, 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 frequency configuration against the target design requirements before procurement. Confirm that the 16-QFN package dimensions align with the PCB land pattern specifications. Ensure the selected crystal matches the internal load capacitance settings configured during manufacturing.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when a compact four-output solution is required without I2C programming overhead. Verify that the application can utilize fixed pin-control logic for feature activation rather than dynamic software configuration. Ensure the input reference frequency falls within the supported 25 MHz or 27 MHz range.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5350 family of factory-programmable clock generators. Unlike the Si5351 series which supports I2C reconfiguration, the Si5350A relies on static pin controls and pre-loaded configurations. The GM1 suffix indicates a specific tape-and-reel packaging format for automated assembly processes.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5350A variants with different output counts such as the 10-MSOP or 20-QFN packages. Cross-family substitution with Si5351 devices requires redesigning the control interface from pins to I2C.