SI5345A-B03682-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B03682-GMR is a low-jitter, 10-output clock synthesizer and jitter attenuator from Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency combination from any input source. 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.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis modes.
• Features programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz for optimized performance.
• Supports hitless input clock switching with automatic or manual selection capabilities.
• Includes in-circuit programmable non-volatile memory (NVM) for persistent configuration storage.

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 package type and tape-and-reel specifications. Ensure compatibility with the ClockBuilder Pro software version used for configuration. Confirm that the factory preprogrammed configuration matches the required application parameters before deployment.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when high-frequency generation up to 1028 MHz is required alongside ultra-low jitter performance. The Si5345A variant specifically supports both integer and fractional synthesis modes across all outputs. Verify that the system design accommodates the QFN-64 package dimensions and thermal requirements for the specified operating temperature range.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345 family of jitter attenuators, which also includes the Si5344 and Si5342 variants. These devices share common architectural features such as the DSPLL core and MultiSynth technology but differ in the number of available output clocks. The Si5345 provides the highest channel count within this series.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5345A variants with different factory preprogramming configurations. Cross-family substitution with Si5344 or Si5342 requires verifying pin compatibility and ensuring the reduced output count meets system requirements.