SI5345D-B04829-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345D-B04829-GM is a 10-channel jitter attenuator and clock multiplier from Skyworks Solutions. It features four inputs and ten outputs housed in a 64-QFN package measuring 9x9 mm. The device supports differential input frequencies up to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 350 MHz for differential signals and up to 250 MHz for LVCMOS. It operates on a core voltage of 1.8 V ±5% and an I/O supply of 3.3 V ±5%. The operating temperature range is -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fourth-generation DSPLL technology.
• Provides ultra-low jitter performance with a programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz.
• Supports hitless input clock switching, free-run modes, and holdover capabilities with glitchless output frequency changes.

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 numerical suffix B04829, as this custom part number represents a unique frequency plan assigned by Skyworks. Confirm that the required evaluation board, such as the SI5345-D-EVB, is available for initial design validation. Ensure the serial interface requirements match the system's I2C or SPI constraints before finalizing the procurement order.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the SI5345D variant specifically when the application requires output frequencies limited to a maximum of 350 MHz. This model is suitable for designs needing high channel density with ten independent outputs. Verify that the input clock sources fall within the specified differential or LVCMOS ranges to ensure proper synchronization and jitter attenuation performance across the entire operating temperature range.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D family of jitter attenuators. The Si5345D distinguishes itself from the Si5345A/C variants by its restricted maximum output frequency of 350 MHz, while retaining the full 10-output architecture. It utilizes MultiSynth technology for flexible frequency synthesis and integrates non-volatile memory for persistent configuration storage without external components.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other Si5345D variants with different preprogrammed configurations, such as SI5345D-D-GM. For applications requiring higher output frequencies, the Si5345A-D-GM may be considered if the pinout and software configuration are compatible. Ensure any substitute maintains the same 64-QFN package dimensions and voltage specifications.