SI5345A-B04209-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B04209-GMR is a low-jitter, 10-output jitter attenuator and clock multiplier from Skyworks Solutions. 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. Output frequencies range from 100 Hz to 1028 MHz for differential formats and up to 250 MHz for LVCMOS. It features an ultra-low jitter performance of 90 fs rms and operates within a temperature range of -40°C to +85°C. The component is housed in a 64-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional synthesis
• Features programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz
• Supports hitless input clock switching between fractionally related clocks
• Includes in-circuit programmable non-volatile memory for known 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 ordering suffix against the manufacturer's current documentation to confirm tape-and-reel packaging and factory pre-programming status. Confirm RoHS compliance and lead times directly with authorized distributors or Skyworks Solutions, Inc., as availability may vary by region and production cycle.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when high channel count and flexible frequency synthesis are required. Ensure the application supports the 64-QFN package footprint. Verify that the required output voltage levels (LVDS, LVPECL, LVCMOS, CML, HCSL) match the programmable driver settings. Confirm that the input clock sources fall within the specified differential or LVCMOS frequency ranges.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345 family of jitter attenuators and clock multipliers. It shares the same core architecture and package outline with other variants like the SI5345A-D-GM but differs in its factory pre-programmed frequency configuration. The 'B' designation typically indicates a specific frequency range capability within the broader product line.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other Si5345A variants such as SI5345A-D-GM or SI5345A-E09241-GMR, provided the specific pre-programmed frequency plan matches the design requirements. Cross-model substitution with Si5344 or Si5342 series is not recommended due to different output counts and package sizes.