SI5344C-B05573-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344C-B05573-GM is a low-jitter, four-output clock synthesizer and jitter attenuator from Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any output frequency up to 1028 MHz from any input frequency. The device supports integer-only synthesis modes and features an integrated loop filter with digitally programmable bandwidth ranging from 0.1 Hz to 4 kHz. It operates on a single 1.8 V core voltage and includes in-circuit programmable non-volatile memory for configuration storage.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer-only synthesis
• Features ultra-low jitter performance of 90 fs rms
• Supports hitless input clock switching between fractionally related inputs
• Includes status monitoring for loss of signal, out-of-frequency, and loss of lock

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 factory preprogrammed configuration associated with the B05573 suffix against the required system specifications. Confirm that the integer-only synthesis capability aligns with the design requirements, as this variant does not support fractional division. Ensure compatibility with the 44-QFN package dimensions during PCB layout planning.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when integer-only frequency synthesis is sufficient for the application. The Si5344C variant offers high-frequency outputs up to 1028 MHz but lacks the fractional synthesis found in the Si5344A series. Verify that the 4-input, 4-output topology meets the system's clock distribution needs and that the 1.8 V core voltage supply is available.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5344 Rev D family, which combines DSPLL and MultiSynth technologies. The 'C' designation indicates integer-only synthesis capabilities, distinguishing it from the 'A' series which supports both integer and fractional modes. The device is designed for applications requiring precise clock generation with minimal jitter.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5344A-D-GM provides similar functionality but adds fractional synthesis capabilities. Si5344B-D-GM offers lower maximum output frequencies limited to 350 MHz. Both alternatives maintain the same package and pinout but differ in synthesis mode and frequency range.