SI5338G-A-GM

Overview

The SI5338G-A-GM is a programmable clock generator from the Si5338 family, manufactured by Skyworks Solutions. It features four output drivers capable of synthesizing any frequency up to 710 MHz using patented MultiSynth technology. The device supports flexible input references including external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential inputs (up to 710 MHz). Outputs are independently configurable for formats such as LVPECL, LVDS, HCSL, and CMOS with supply voltages of 1.5, 1.8, 2.5, or 3.3 V. It operates on a single core supply (1.8, 2.5, or 3.3 V) with typical current consumption of 45 mA. Key electrical parameters include a maximum output frequency of 710 MHz, a phase jitter of 9 ps RMS, and an operating temperature range of –40 °C to +85 °C.

Feature Summary

• Four independent output drivers supporting frequencies up to 710 MHz
• Low phase jitter specification of 9 ps RMS
• Flexible input reference options: Crystal, CMOS, SSTL/HSTL, and Differential
• Independent output voltage configuration per driver (1.5V, 1.8V, 2.5V, 3.3V)

Applications

• Ethernet switch/router timing
• PCIe Gen1/2/3/4 common clock generation
• Processor and FPGA clocking
• Telecom line cards

Procurement Notes

Verify the specific suffix 'G' against the manufacturer's ordering guide to confirm pinout compatibility and package type. Confirm that the 9 ps RMS jitter rating aligns with system requirements, as other variants in the series offer lower jitter specifications. Ensure I2C pull-up voltages match the controller interface levels.

Selection Notes

Select this variant when high-frequency synthesis up to 710 MHz is required alongside moderate jitter performance. Verify that the 45 mA typical core current fits the power budget. Check if the specific output format combinations (LVPECL/LVDS vs. CMOS) meet the target load requirements without exceeding individual buffer supply currents.

Part Context

This component belongs to the Si5338 family of low-jitter clock generators. While it shares the MultiSynth architecture with other models like the SI5338Q-B-GMR, the SI5338G-A-GM is distinguished by its higher phase jitter specification (9 ps RMS compared to 0.7 ps RMS in Q-series parts) and support for higher output frequencies up to 710 MHz.

Replacement Considerations

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