SI5328C-C-GM

Overview

The SI5328C-C-GM is a jitter-attenuating precision clock multiplier designed for Synchronous Ethernet applications requiring sub 1 ps jitter performance and ultra-low loop bandwidth. It accepts two differential input clocks ranging from 8 kHz to 710 MHz and generates two output clocks ranging from 8 kHz to 808 MHz. The device operates from a single 2.5 V or 3.3 V supply, with typical current draw of 251 mA at 808 MHz LVPECL output. It features digitally programmable loop bandwidth (0.1 Hz to 6 Hz) and supports I²C or SPI interfaces for configuration.

Feature Summary

• Fully compliant with ITU-T G.8262/Y.1362 for Synchronous Ethernet EEC options 1 and 2
• Ultra-low jitter generation as low as 0.3 ps rms (12 kHz–20 MHz)
• Integrated DSPLL technology eliminates external VCXO and loop filter components
• Dual clock inputs with manual or automatic hitless switching capability

Applications

• GbE/10GbE/100GbE Synchronous Ethernet timing
• Carrier Ethernet switches and routers
• ITU-T G.8262 compliant network synchronization

Procurement Notes

Verify the specific suffix 'GM' against the manufacturer's ordering guide to confirm package type and tape/reel specifications. Confirm RoHS compliance status and lead times directly with Skyworks Solutions Inc. or authorized distributors prior to procurement.

Selection Notes

Select this component when sub 1 ps jitter performance and strict adherence to ITU-T G.8262 wander requirements are necessary. Ensure the design accommodates the 36-lead QFN package dimensions and provides adequate thermal management given the maximum operating temperature of 85 °C.

Part Context

The SI5328 belongs to the Si53xx family of precision clock multipliers utilizing third-generation DSPLL technology. This family integrates frequency synthesis and jitter attenuation into a highly compact solution, distinguishing it from traditional PLLs that require discrete loop filters and voltage-controlled oscillators.

Replacement Considerations

Consult the Skyworks Solutions Si53xx Family Reference Manual for cross-referencing compatible devices within the same product line. Verify pinout compatibility and electrical specifications before substituting with other models in the Si532x series.