SI5344A-B05769-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344A-B05769-GMR is a factory preprogrammed clock synthesizer and jitter attenuator from the Si5344 family. It features four inputs and four outputs, supporting integer and fractional frequency synthesis with output frequencies up to 1028 MHz. The device utilizes fourth-generation DSPLL technology to achieve ultra-low jitter performance of 90 fs rms. It operates within a temperature range of -40°C to +85°C and is housed in a 44-QFN package measuring 7x7 mm.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis modes.
• Integrates fourth-generation DSPLL technology for ultra-low jitter attenuation and high-performance clock multiplication.
• Supports hitless input clock switching between fractionally related sources and glitchless on-the-fly output frequency changes.
• 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 factory preprogrammed configuration associated with the B05769 suffix against project requirements. Confirm that the standard 44-QFN package dimensions and pinout match the PCB layout. Ensure compatibility with the I2C or SPI serial interface used for status monitoring and control.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when an ultra-low jitter solution is required for applications demanding precise frequency generation across a wide range. The Si5344A variant supports differential outputs up to 1028 MHz, suitable for high-speed digital interfaces. Verify that the input frequency range aligns with the available reference clocks, considering both differential and LVCMOS options.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D family of jitter attenuators. The Si5344 model specifically provides four inputs and four outputs in a compact 44-QFN package. It shares core technologies like MultiSynth and DSPLL with the larger Si5345 and smaller Si5342 variants, offering scalable channel counts for different system complexity levels.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other factory preprogrammed parts within the Si5344A series, such as SI5344A-Dxxxxx-GMR, provided the preprogrammed configuration matches the design needs. Generic blank prototypes like SI5344A-D-GMR require custom programming via ClockBuilder Pro software.