SI5345D-B03790-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345D-B03790-GM is a jitter attenuator and clock multiplier featuring four inputs and ten outputs. It supports differential input frequencies from 8 kHz to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 350 MHz for differential formats and up to 250 MHz for LVCMOS. The device operates on a core voltage of 1.8 V ±5% and an auxiliary supply of 3.3 V ±5%. It utilizes fourth-generation DSPLL technology with MultiSynth dividers, housed in a 64-QFN (9x9 mm) package, and functions 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.
• Features ultra-low jitter performance of 90 fs rms with digitally programmable loop bandwidth.
• Supports hitless input clock switching between fractionally related sources.
• Includes in-circuit programmable non-volatile memory for known power-up configurations.

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 B03790 suffix against the official Skyworks ordering guide or datasheet revision D. Confirm that the required serial interface protocol (I2C or SPI) matches the system design requirements before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when applications require ten configurable outputs with frequencies up to 350 MHz. Ensure the design accommodates the 64-QFN package dimensions and thermal dissipation characteristics. Verify compatibility with the ClockBuilder Pro software for generating the necessary NVM configuration data.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family, which integrates fourth-generation DSPLL and MultiSynth technologies. The 'D' designation indicates support for output frequencies up to 350 MHz, distinguishing it from the 'A' and 'C' variants that support higher frequencies or integer-only modes.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5345B-D-GM serves as a functional alternative within the same series but may differ in factory programming or specific electrical tolerances. Verify pinout compatibility and ensure the replacement part meets the specific jitter attenuation requirements of the application.