SI5346A-D-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5346A-D-GMR is a dual DSPLL jitter attenuator in a 44-QFN package. It provides four outputs with any-frequency conversion from inputs up to 750 MHz, generating outputs up to 720 MHz. The device achieves ultra-low jitter of 95 fs rms (12 kHz–20 MHz). It operates on a 1.8 V core and 3.3 V I/O supply within a -40°C to +85°C range.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual independent DSPLLs enable flexible routing of any input to any output.
• Supports hitless switching between frequency-locked clock sources.
• Includes automatic holdover mode for maintaining timing during input loss.
• Features programmable loop bandwidths ranging from 0.1 Hz to 4 kHz.

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN Muxponders and Transponders
• 10/40/100G network line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the 'R' suffix indicates tape-and-reel packaging rather than tray. Confirm the 'D' revision matches current design requirements. Ensure ClockBuilder Pro software compatibility for configuration. Check RoHS-6 compliance status. Validate factory pre-programming options if specific configurations are needed.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model for applications requiring two independent timing paths in a compact form factor. Compare against Si5347 for quad-DSPLL needs. Verify input/output voltage levels match system requirements. Consider Fastlock feature for rapid lock acquisition times.

Clock Generators, PLLs, Frequency Synthesizers Part Context

Part of the Si5347/46 Rev D family utilizing fourth-generation DSPLL technology. The Si5346 serves as the dual-DSPLL variant of the Si5347 quad-DSPLL device. Both share identical functional blocks but differ in package size and output count.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5346A-D-GM is the tray-packaged equivalent. Si5347A-D-GMR offers quad-DSPLL functionality in a larger package. Si5346B variants support lower maximum output frequencies.