SI5345A-B05576-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B05576-GMR is a 10-output jitter attenuator and clock multiplier from the Si5345 family, manufactured by Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any combination of output frequencies from any input frequency. 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 outputs and up to 250 MHz for LVCMOS outputs. It features ultra-low jitter performance of 90 fs rms and meets ITU-T G.8262 SyncE requirements. The component operates within a temperature range of -40°C to +85°C and 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 and integer synthesis.
• Features ultra-low jitter performance of 90 fs rms with digitally programmable jitter attenuation bandwidth.
• Supports hitless input clock switching between fractionally related clocks and glitchless on-the-fly frequency changes.
• Includes in-circuit programmable non-volatile memory for known power-up configuration and status monitoring capabilities.

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 suffix B05576, as this numerical sequence defines the unique clock plan stored in the non-volatile memory. Confirm that the ordering part number matches the required Rev D datasheet specifications. Ensure compatibility with the I2C or SPI serial interface used for device control and register access during integration.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when high channel count and wide frequency range are required, specifically needing 10 outputs with differential capability up to 1028 MHz. The 'A' variant supports both integer and fractional synthesis modes, unlike the 'B' or 'D' variants which may have lower frequency limits. Ensure the application requires the 64-QFN package form factor and can accommodate the necessary external crystal reference on the XA/XB pins for optimal jitter performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D family of jitter attenuators. The Si5345 variant specifically provides four inputs and ten outputs, distinguishing it from the Si5344 (4 outputs) and Si5342 (2 outputs). All family members share the same core DSPLL technology and package options appropriate to their channel count, such as the 64-QFN for the Si5345.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same family include other Si5345 variants like SI5345A-D-GM or SI5345C-D-GM, provided the specific frequency plan does not match the preprogrammed B05576 configuration. Cross-family replacement with Si5344 or Si5342 models requires verifying pin compatibility and ensuring the reduced output count meets system requirements.