SI5344B-B02953-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5344B-B02953-GM is a jitter attenuator and clock multiplier from the Si5344 Rev D family. It features four inputs and four outputs in a 44-QFN package. The device generates any output frequency up to 350 MHz from any input frequency using fourth-generation DSPLL technology. Key electrical parameters include an ultra-low jitter of 90 fs rms, a core voltage (VDD) of 1.8 V ±5%, and an analog supply (VDDA) of 3.3 V ±5%. It supports differential inputs from 8 kHz to 750 MHz and LVCMOS inputs from 8 kHz to 250 MHz. Outputs support LVDS, LVPECL, LVCMOS, CML, and HCSL formats.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency
• Ultra-low jitter performance of 90 fs rms
• Programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz
• Supports free-run, synchronous, and holdover modes with automatic or manual input switching

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 B02953 against official Skyworks documentation to confirm factory preprogrammed configuration details. Ensure compatibility with ClockBuilder Pro software for final validation of the non-volatile memory settings before integration into production designs.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when low jitter and flexible frequency synthesis are required for networking applications. The Si5344B variant specifically targets frequencies up to 350 MHz. Verify that the 4-input, 4-output architecture meets system requirements compared to the 10-output Si5345 or 2-output Si5342 variants.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5344 Rev D series, which utilizes MultiSynth and DSPLL technologies. It is designed for high-performance clock generation and jitter cleaning. The device integrates a fully on-chip loop filter and supports serial interface programming via I2C or SPI.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Compatible substitutes within the same family include SI5344A-D-GM for higher frequency support up to 1028 MHz, or SI5344C-D-GM for integer-only synthesis. For different output counts, consider SI5345B-D-GM or SI5342B-D-GM.