SI5351A-B05563-GTR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5351A-B05631-GTR is a factory preprogrammed I2C programmable clock generator from the Si5351 series, manufactured by Skyworks Solutions. It features three LVCMOS outputs and operates with an XTAL reference frequency of 25 or 27 MHz. The device generates output frequencies up to 200 MHz with 0 ppm error using MultiSynth fractional dividers. It functions within a core supply voltage range of 2.25 V to 3.6 V and an output buffer voltage range of 1.71 V to 3.6 V. Typical period jitter is less than 70 ps peak-to-peak. The component is housed in a 10-pin MSOP package and supports an operating temperature range from -40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• I2C user-definable configuration for generating any frequency up to 200 MHz
• Highly linear VCXO architecture available in specific variants for synchronous clock generation
• Configurable spread spectrum modulation selectable at each output
• Glitchless frequency changes and adjustable output delay capabilities

Clock Generators, PLLs, Frequency Synthesizers Applications

• Replacing crystals, crystal oscillators, and VCXOs in cost-sensitive designs
• Audio and video equipment synchronization
• Networking and communication infrastructure timing
• Servers and storage system clock distribution

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the exact factory preprogrammed frequency plan associated with the suffix B05631 using ClockBuilder Pro software before integration. Confirm that the 10-MSOP package dimensions match the target PCB footprint. Ensure the I2C pull-up voltages align with the supported range of 2.25 V to 3.6 V for reliable communication.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this variant when three independent LVCMOS outputs are required without external programming hardware. The Si5351A version relies solely on an internal oscillator driven by a fixed-frequency crystal, unlike the Si5351B which includes a VCXO or the Si5351C which supports an external CLKIN reference. Verify that the maximum output frequency requirement does not exceed 200 MHz.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5351 family of I2C-programmable CMOS clock generators. The 'A' designation indicates it uses only a crystal reference for free-running clocks, distinguishing it from the VCXO-enabled Si5351B and the external-reference Si5351C. The 'GTR' suffix denotes tape and reel packaging for surface-mount assembly.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other Si5351A variants with different output counts or packages, such as Si5351A-B-GT (blank, 3 outputs) or Si5351A-B-GM (blank, 8 outputs). For identical preprogrammed functionality, verify equivalent part numbers via Skyworks ClockBuilder Pro.