SI5346A-B03082-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5346A-B03082-GMR is a dual DSPLL jitter attenuator manufactured by Skyworks Solutions. It integrates two independent DSPLLs within a 44-QFN 7x7 mm package, providing four outputs with frequencies ranging from 100 Hz to 720 MHz. The device supports input frequencies up to 750 MHz and achieves ultra-low jitter of 95 fs rms. Operating voltages include VDD at 1.8 V and VDDA at 3.3 V. It features I2C/SPI control, in-circuit programmable non-volatile memory, and operates across a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual DSPLL architecture enabling any-frequency conversion from any input source
• Ultra-low jitter performance of 95 fs rms for high-precision timing applications
• Flexible crosspoint routing allowing any input to connect to any output clock
• Supports hitless switching, holdover modes, and glitchless frequency changes

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN Muxponders and Transponders
• 10/40/100G network line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• Broadcast video systems

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 and factory pre-programming configurations. Confirm that the designated part number matches the intended electrical specifications and package type before finalizing procurement orders.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a compact dual-DSPLL solution is required for jitter attenuation. Ensure the design accommodates the 44-QFN 7x7 mm footprint and provides appropriate power supplies for VDD and VDDA pins. Verify that the application requires differential or LVCMOS outputs within the specified frequency ranges.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device belongs to the Si5347/46 family of jitter attenuators utilizing fourth-generation DSPLL technology. While the Si5347 offers quad DSPLLS and eight outputs in a larger package, the Si5346 provides a dual-DSPLL configuration in a smaller form factor, maintaining similar performance characteristics and flexibility for space-constrained designs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5346B-D-GMR serves as a functional alternative within the same series, offering identical dual DSPLL capabilities but with a reduced maximum output frequency range of 350 MHz compared to the 720 MHz capability of the Si5346A variant.