SI5345D-B03778-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345D-B03778-GMR is a jitter attenuating clock multiplier from the Si5345 family, manufactured by Skyworks Solutions. It features four inputs and ten outputs housed in a 64-QFN package measuring 9x9 mm. The device 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 signals and up to 250 MHz for LVCMOS. It operates on a core voltage of 1.8 V ±5% and an auxiliary voltage of 3.3 V ±5%, with a specified operating 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 fourth-generation DSPLL and MultiSynth technologies.
• Provides ultra-low jitter performance of 90 fs rms with digitally programmable jitter attenuation bandwidth.
• Supports free-run, synchronous, and holdover modes with automatic or manual hitless input clock switching.

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 ensure compatibility with required packaging options such as tape and reel. Confirm that the factory preprogrammed configuration matches the intended application requirements before finalizing procurement orders.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when fractional synthesis is required with output frequencies capped at 350 MHz. Ensure the design accommodates the 64-QFN 9x9 mm footprint and provides appropriate power supply decoupling for the 1.8 V and 3.3 V rails. Utilize ClockBuilder Pro software for optimal loop bandwidth and frequency configuration.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D series, which integrates DSPLL and MultiSynth technologies for high-performance clock generation. The 'D' variant specifically limits the maximum output frequency to 350 MHz, distinguishing it from the 'A' and 'C' variants that support frequencies up to 1028 MHz.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same family include SI5345B-D-GMR for lower frequency requirements or SI5345A-D-GM for higher frequency needs. Verify pinout and package compatibility when substituting with other Si5345 variants.