SI5345B-B04297-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345B-B04297-GM is a factory preprogrammed, low-jitter clock multiplier and jitter attenuator featuring 10 outputs. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency combination from any input. The device supports differential inputs up to 750 MHz and LVCMOS inputs up to 250 MHz, with output frequencies ranging from 100 Hz to 350 MHz. It operates on a single 1.8 V core supply 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 and fractional synthesis
• Features ultra-low jitter performance of 90 fs rms
• Supports hitless input clock switching between fractionally related clocks
• Includes in-circuit programmable non-volatile memory for power-up configuration

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 B04297 suffix against the manufacturer's current ordering guide to confirm the exact preprogrammed frequency plan. Factory preprogrammed devices are assigned unique numerical sequences representing their specific configuration. Confirm package availability and lead times directly with authorized distributors as stock levels vary.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a fixed, preconfigured clock solution is required without field programming. Ensure the maximum output frequency requirement does not exceed 350 MHz, as higher frequencies require the Si5345A or C variants. Verify that the application requires the specific frequency plan associated with the B04297 suffix.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 family of jitter attenuators. The 'B' designation indicates a maximum output frequency limit of 350 MHz, distinguishing it from the 'A' and 'C' variants which support frequencies up to 1028 MHz. The 'GM' suffix denotes the QFN-64 package type.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5345B-D-GM serves as the base model for custom programming. Si5345A-D-GM provides higher frequency support up to 1028 MHz. Si5345C-D-GM offers integer-only synthesis up to 1028 MHz.