SI5345A-D06668-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-D06668-GM is a factory preprogrammed, 10-output jitter attenuator and clock multiplier from the Si5345 family. It supports any-frequency generation with differential outputs ranging from 100 Hz to 1028 MHz and LVCMOS outputs up to 250 MHz. The device features ultra-low jitter of 90 fs rms and integrates fourth-generation DSPLL technology. It operates on a core voltage (VDD) of 1.8 V ±5% and an analog supply (VDDA) of 3.3 V ±5%. The component is housed in a 64-QFN package measuring 9x9 mm and functions within a temperature range of –40 to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional synthesis
• Integrates fourth-generation DSPLL for ultra-low jitter attenuation and digital programmability
• Supports hitless input switching between fractionally related clocks without phase offset propagation
• 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 numerical suffix against Skyworks documentation to confirm the exact preprogrammed frequency plan. Factory preprogrammed devices utilize unique ordering part numbers assigned by Skyworks. Confirm that the required serial interface protocol (I2C or SPI) matches the system design constraints before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when high channel count and wide frequency ranges are required. The 'A' variant supports integer and fractional synthesis up to 1028 MHz. Ensure the application requires the 64-QFN package size. Use ClockBuilder Pro software to validate the specific configuration stored in the NVM for the custom part number.

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. Other family members include the Si5344 (4 outputs) and Si5342 (2 outputs), which share similar architectural features but differ in pin count and I/O capacity.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements must be other factory preprogrammed Si5345A variants with compatible frequency plans. Generic Si5345A-D-GM parts require reprogramming and do not offer immediate drop-in replacement capabilities for fixed configurations.