SI5345B-B05722-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-B05722-GMR is a factory preprogrammed clock synthesizer and jitter cleaner from the Si5345 family. It features four inputs and ten outputs, supporting any-frequency generation up to 350 MHz. The device utilizes fourth-generation DSPLL and MultiSynth technologies for ultra-low jitter performance of 90 fs rms. It operates on a single 1.8 V core supply and accepts differential or LVCMOS input frequencies ranging from 8 kHz to 750 MHz. The component is housed in a 64-QFN package and supports I2C/SPI serial interfaces with in-circuit programmable non-volatile memory.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis.
• Provides ultra-low jitter attenuation with a bandwidth that is digitally programmable from 0.1 Hz to 4 kHz.
• Supports hitless input clock switching between fractionally related inputs and glitchless on-the-fly frequency changes.
• Includes status monitoring for loss of signal, out-of-frequency, and loss of lock conditions.

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 B05722 suffix against the design requirements. Confirm the RoHS compliance and Pb-free status as indicated in the datasheet. Ensure the QFN-64 thermal pad soldering process meets the recommended land pattern specifications for reliable operation.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a fixed, preconfigured clock solution is required to simplify board design. The Si5345B variant is appropriate for applications where output frequencies do not exceed 350 MHz. Verify that the external crystal frequency falls within the 25 to 54 MHz range for optimal jitter performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family, which combines DSPLL and MultiSynth technologies. The 'B' designation indicates a maximum output frequency limit of 350 MHz, distinguishing it from the 'A' and 'C' variants which support higher frequencies. The 'GMR' suffix denotes tape and reel packaging.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345B-D-GMR