SI5344B-B03301-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344B-B03301-GM is a factory preprogrammed clock multiplier and jitter attenuator from the Si5344 Rev D family. It features four inputs and four outputs housed in a 44-QFN package. The device generates any combination of output frequencies up to 350 MHz from any input frequency using fourth-generation DSPLL and MultiSynth technologies. Key electrical parameters include an ultra-low jitter performance of 90 fs rms, a differential input frequency range of 8 kHz to 750 MHz, and an LVCMOS input range of 8 kHz to 250 MHz. Output frequencies are configurable from 100 Hz to 350 MHz for LVCMOS and up to 1028 MHz for differential outputs. The core voltage (VDD) operates at 1.8 V ±5%, while the analog supply (VDDA) is 3.3 V ±5%. The unit supports I2C or SPI serial interfaces and includes in-circuit programmable non-volatile memory.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL and MultiSynth technologies for any-frequency clock generation and jitter attenuation.
• Features fully integrated on-chip loop filter to eliminate noise coupling risks associated with discrete solutions.
• Supports free-run, synchronous, and holdover modes with automatic and manual input clock switching capabilities.
• Includes in-circuit programmable non-volatile memory ensuring known frequency configuration upon power-up.

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN muxponders and transponders
• 10/40/100 G networking line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• SONET/SDH line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering part number against the manufacturer's current documentation to confirm the factory preprogrammed configuration matches the design requirements. Ensure the component meets RoHS-6 compliance standards. Check for any product change notifications or errata related to the Rev D silicon revision before finalizing procurement specifications.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when a fixed, factory-configured clock solution is required rather than field-programmable flexibility. The 'B' suffix indicates support for output frequencies up to 350 MHz. Confirm that the application requires the specific preprogrammed settings assigned by Skyworks, as these cannot be altered via standard user programming methods after manufacturing.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5344 Rev D series, which offers 4 inputs and 4 outputs in a 7x7 mm 44-QFN package. It shares architectural similarities with the Si5345 (10 outputs) and Si5342 (2 outputs). The 'GM' suffix denotes the lead-free, RoHS-compliant QFN package type used across the family.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same family include SI5344A-D-GM, SI5344C-D-GM, and SI5344D-D-GM. Note that these variants differ in maximum output frequency ranges and synthesis mode support (integer vs. fractional). Verify compatibility if replacing with a generic Si5344-D-GM, as the B03301 variant contains unique factory programming.