SI5345B-B04845-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-B04845-GMR is a clock synthesizer and jitter cleaner from Skyworks Solutions, Inc. It features 10 outputs with a maximum output frequency of 350 MHz. The device supports differential inputs up to 750 MHz and LVCMOS inputs up to 250 MHz. Operating voltage ranges from 1.71 V to 3.47 V. It is housed in a QFN-64 package and operates 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 fourth-generation DSPLL technology
• Provides ultra-low jitter performance of 90 fs rms
• Supports hitless input clock switching between fractionally related clocks
• 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 B04845 suffix against the official Skyworks documentation or datasheet before procurement. Confirm that the component meets all required electrical specifications and environmental operating conditions for the intended application design.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when an application requires ten distinct output clocks derived from various input sources. Ensure the system design accommodates the QFN-64 package dimensions and thermal requirements. Verify compatibility with the desired output signal formats such as LVDS, LVPECL, LVCMOS, CML, or HCSL.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 family of jitter attenuating clock multipliers. It utilizes MultiSynth and DSPLL technologies to provide flexible clock generation capabilities. The device is designed for high-performance timing applications requiring precise frequency synthesis and low phase noise characteristics.

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 Si5345B variant?

The Si5345B variant supports a maximum output frequency of 350 MHz.

How does the device handle input clock switching?

The device supports both automatic and manual input clock switching, including hitless switching for fractionally related inputs and glitchless switching for inputs with slight frequency differences.

Is external programming required after manufacturing?

No, the device includes in-circuit programmable non-volatile memory (NVM) that allows it to power up with a known frequency configuration without external programming.