SI5375B-A-GL

Clock Generators, PLLs, Frequency Synthesizers Overview

The Si5375B-A-GL is a highly integrated, four-PLL jitter-attenuating precision clock multiplier utilizing Skyworks' third-generation DSPLL technology. It accepts input clocks from 2 kHz to 710 MHz and generates independent outputs up to 808 MHz with virtually any frequency translation. The device delivers ultra-low jitter performance of 350 fs rms (12 kHz–20 MHz) and 410 fs rms (50 kHz–80 MHz). It operates on a single 1.8 V or 2.5 V supply with high PSRR on-chip voltage regulators. Configuration is managed via an I2C interface, supporting programmable loop bandwidths as low as 60 Hz without external components.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Four independent DSPLL engines providing any-frequency synthesis and jitter attenuation
• Ultra-low jitter generation capability meeting ITU-T G.8251 and Telcordia GR-253-CORE OC-192 specifications
• Integrated digitally programmable loop filter eliminating the need for external VCXO and loop filter components
• Supports simultaneous free-run and synchronous operation with automatic/manual hitless input clock switching

Clock Generators, PLLs, Frequency Synthesizers Applications

• High density any-port, any-protocol, any-frequency line cards
• ITU-T G.709 OTN custom FEC systems
• 10/40/100G optical transport networks
• OC-48/192 and STM-16/64 SONET/SDH equipment
• GbE/10GbE Synchronous Ethernet and Carrier Ethernet switches

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'A-GL' against the manufacturer's official ordering guide to confirm package type, lead-free status, and temperature range. Ensure the selected variant matches the required output signal format and operating conditions for the target application design.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when sub-1 ps jitter performance and independent timing domains are required for high port count applications. Evaluate thermal management requirements due to significant heat dissipation; consider using a 1.8 V supply or implementing airflow to maintain reliability within the -40 °C to +85 °C operating range.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The Si5375 belongs to the Si53xx Any-Frequency Precision Clocks family. It is designed for applications requiring precise clock multiplication and jitter attenuation where traditional PLL solutions would necessitate external loop filters and VCXOs. The integration of four fully independent DSPLLs allows for complex timing architectures in a single package.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.