SI5345A-B03332-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B03332-GM is a factory preprogrammed clock synthesizer and jitter attenuator from Skyworks Solutions. It features four inputs and ten outputs, supporting differential frequencies up to 1028 MHz and LVCMOS up to 250 MHz. The device utilizes fourth-generation DSPLL and MultiSynth technologies for ultra-low jitter performance of 90 fs rms. It operates on a 1.8 V core voltage and 3.3 V analog supply within a temperature range of -40°C to +85°C. The component 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 using integer and fractional synthesis modes.
• Supports hitless input clock switching between fractionally related clocks and glitchless on-the-fly output frequency changes.
• Includes in-circuit programmable non-volatile memory (NVM) to ensure known frequency configuration upon power-up.
• Integrates a fully on-chip loop filter with digitally programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz.

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 B03332 suffix against project requirements. Confirm that the standard Si5345A-D-GM base part number matches the required electrical specifications before procurement. Ensure compatibility with the ClockBuilder Pro software for any necessary post-installation adjustments or verification of the stored NVM data.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a fixed, preconfigured clock solution is preferred over field-programmable devices. The Si5345A variant supports high-frequency differential outputs up to 1028 MHz. Verify that the required input/output signal formats (LVDS, LVPECL, LVCMOS, CML, HCSL) align with the system design. Consider the 64-QFN package dimensions for PCB layout constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 family of jitter attenuators. It shares the same physical package and core architecture as the Si5344 and Si5342 variants but offers ten output channels compared to four or two. The 'A' designation indicates support for high-frequency differential outputs, while the custom suffix denotes a specific factory-loaded configuration.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other factory preprogrammed Si5345A parts with matching configurations. Generic alternatives require reprogramming via ClockBuilder Pro. Verify pinout compatibility with the 64-QFN package when substituting with other Si5345 series members.