SI5344D-B05546-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344D-B05546-GMR is a clock synthesizer and jitter cleaner from Skyworks Solutions, belonging to the Si5344 Rev D series. It features four inputs and four outputs housed in a 44-QFN 7x7 mm package. The device generates any combination of output frequencies ranging from 100 Hz to 350 MHz using fourth-generation DSPLL and MultiSynth technologies. It supports differential input frequencies up to 750 MHz and LVCMOS inputs up to 250 MHz. Key electrical parameters include an ultra-low jitter performance of 90 fs rms, a core voltage (VDD) of 1.8 V ±5%, and an analog supply (VDDA) of 3.3 V ±5%. The operating temperature range is -40 to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional and integer synthesis modes.
• Features programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz for optimized noise filtering.
• Supports hitless input clock switching between fractionally related clocks without phase offset propagation.
• Includes in-circuit programmable non-volatile memory to ensure known frequency configuration upon power-up.

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 ordering suffix against the manufacturer's current documentation to confirm availability status and packaging options. Confirm that the factory preprogrammed configuration matches the required system specifications before procurement. Check for any product change notifications or errata updates relevant to the Rev D silicon revision.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when low jitter performance below 350 MHz is required with flexible input/output configurations. Ensure the design accommodates the 44-QFN 7x7 mm package dimensions and thermal requirements. Verify compatibility with the I2C or SPI serial interface for configuration via ClockBuilder Pro software.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5344 family within the broader Si5345/44/42 Rev D series. While sharing the same core architecture and package as other variants like the Si5344B-D-GM, the 'D' suffix indicates support for higher output frequencies up to 1028 MHz, though this specific model is configured for the 350 MHz range. It differs from the Si5345 which offers ten outputs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements within the same family include SI5344B-D-GMR or SI5344A-D-GMR, provided the frequency range and pinout compatibility are verified. Cross-family substitution requires careful evaluation of the package outline and register map differences.