SI5345A-B03269-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B03269-GMR is a factory preprogrammed clock synthesizer and jitter attenuator from the Si5345 family. It features four inputs and ten outputs, supporting any-frequency generation up to 1028 MHz using integer and fractional synthesis modes. The device utilizes fourth-generation DSPLL and MultiSynth technologies to achieve ultra-low jitter performance of 90 fs rms. It operates within a temperature range of -40°C to +85°C and is housed in a 64-QFN package measuring 9x9 mm.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency
• Ultra-low jitter of 90 fs rms
• Programmable jitter attenuation bandwidth: 0.1 Hz to 4 kHz
• Highly configurable outputs compatible with LVDS, LVPECL, LVCMOS, CML, and HCSL

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 B03269 against project requirements. Confirm that the ordering suffix does not alter the electrical function or pinout compared to standard Si5345A-D devices. Ensure compatibility with ClockBuilder Pro software for any necessary post-deployment adjustments.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when high channel count and flexible frequency synthesis are required. The Si5345A variant supports differential outputs up to 1028 MHz. Verify that the application requires the specific preprogrammed settings encoded in the B03269 suffix rather than a blank prototyping device.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D series of jitter attenuating clock multipliers. The Si5345A specifically denotes the high-performance version capable of generating frequencies up to 1028 MHz with both integer and fractional synthesis capabilities across all ten outputs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345A-D-GMR

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency supported by the Si5345A?

The Si5345A supports differential output frequencies ranging from 100 Hz to 1028 MHz.

Does the device support hitless input switching?

Yes, the device supports hitless input switching between two clock inputs that have a fixed phase relationship or are fractionally related.

How is the loop filter implemented in this device?

The loop filter is fully integrated on-chip, eliminating the need for external discrete components and reducing noise coupling risks.