SI5338G-B-GMR

Overview

The Skyworks SI5338G-B-GMR is an I2C-programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent output drivers with zero ppm precision. The device supports flexible input references including external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz). Outputs support LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats. Key electrical parameters include a core supply voltage of 1.8 V, 2.5 V, or 3.3 V, typical core current of 45 mA, and package type QFN-24.

Feature Summary

• Low phase jitter of 0.7 ps RMS typical
• Independent glitchless frequency adjustment in 1 ppm steps
• Configurable spread spectrum (SSC) with 0.5% to 5.0% deviation
• Supports PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4 systems
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix 'GMR' against the manufacturer's official documentation to confirm tape-and-reel packaging and exact factory configuration. Ensure compatibility with I2C/SMBus interface requirements for system integration.

Selection Notes

Select this component when independent any-frequency synthesis is required for multiple clock domains. Verify that the target application frequencies fall within the supported ranges: up to 710 MHz for differential outputs and up to 200 MHz for CMOS outputs. Confirm power supply constraints match the 1.8 V, 2.5 V, or 3.3 V core options.

Part Context

This part belongs to the Si5338 family of programmable clock generators. It replaces discrete crystal oscillators by providing four independent clock signals from a single reference source. The device integrates NVM programming capabilities for standalone operation after initial configuration.

Replacement Considerations

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