SI5350A-B11984-GM1

Clock Generators, PLLs, Frequency Synthesizers Overview

The Si5350A-B11984-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 single supply voltage of 1.8 V, 2.5 V, or 3.3 V and accepts a 25 MHz or 27 MHz crystal reference. It features glitchless frequency changes, configurable spread spectrum, and low output period jitter typically below 70 ps pp.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple independent frequencies using high-resolution fractional dividers
• Supports pin-controlled glitchless frequency switching between two pre-configured rates
• Configurable spread spectrum for electromagnetic interference reduction
• Integrated internal load capacitors eliminate external crystal components

Clock Generators, PLLs, Frequency Synthesizers Applications

• HDTV and set-top boxes
• Audio/video equipment and gaming consoles
• Printers, scanners, and projectors
• Residential gateways and networking equipment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory programming parameters associated with the B11984 suffix against the ClockBuilder Pro configuration file. Confirm that the 16-QFN package dimensions match the target PCB land pattern requirements. Ensure the selected crystal matches the 25 MHz or 27 MHz specification required by the programmed design.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a fixed-frequency solution is preferred over I2C programmability to reduce system complexity. The GM1 suffix indicates a four-output variant in a 16-QFN package. Verify that the required output count does not exceed four channels and that the application supports the pin-based control logic rather than digital interface configuration.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5350 family of custom clock generators designed to replace discrete crystals and oscillators. The 'A' designation specifies XTAL-only input capability without VCXO or CLKIN support. The 'GM1' suffix identifies the specific 16-QFN package containing four independent clock outputs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5350A variants with different output counts such as the 10-MSOP (3 outputs) or 20-QFN (8 outputs). Cross-family substitution with Si5351 requires verification of I2C versus pin-control compatibility.