SI5351B-B05625-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5351B-B05625-GM is a factory preprogrammed I2C programmable clock generator from Skyworks Solutions. It utilizes the 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 features an internal VCXO for synchronous clock generation and supports fixed-frequency crystal references of 25 or 27 MHz. It operates on core supply voltages of 2.5 V or 3.3 V and output voltages of 1.8, 2.5, or 3.3 V. The component is housed in a 20-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple asynchronous and synchronous clock outputs using a PLL/VCXO architecture
• Configurable spread spectrum modulation selectable at each output
• Supports static phase offset and glitchless frequency changes
• Separate voltage supply pins enable level translation between core and output buffers

Clock Generators, PLLs, Frequency Synthesizers Applications

• Audio/video equipment
• Printers, scanners, projectors
• Handheld instrumentation
• Residential gateways
• Networking and communication systems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory preprogramming code associated with the suffix B05625 against the required system timing specifications. Confirm that the 20-QFN package dimensions match the target PCB land pattern. Ensure the I2C address configuration aligns with the system bus requirements before finalizing the procurement order.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this variant when both free-running and synchronous clock domains are required within a single design. The internal VCXO eliminates the need for external pullable crystals. Verify that the application requires the eight-output capacity provided by the 20-QFN package rather than the fewer outputs available in smaller packages.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5351 family of CMOS clock generators. The 'B' designation indicates the inclusion of an internal Voltage Controlled Crystal Oscillator (VCXO), distinguishing it from the XTAL-only Si5351A and the CLKIN-synchronized Si5351C. The 'GM' suffix denotes the 20-QFN package type.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other factory preprogrammed variants within the Si5351B series, such as SI5351B-Bxxxxx-GM, provided the custom frequency plan matches the system requirements.