SI5338A-A-GMR

Overview

The SI5338A-A-GMR is an I2C-programmable quad clock generator utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports a core supply voltage of 1.8, 2.5, or 3.3 V and operates within a temperature range of –40 to +85 °C. The device features a typical phase jitter of 0.7 ps RMS and allows for glitchless frequency adjustments in 1 ppm steps. Outputs support LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats with frequencies up to 710 MHz.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers
• Low phase jitter of 0.7 ps RMS typ
• High precision synthesis allows true zero ppm frequency accuracy on all outputs
• Flexible input reference: External crystal (8 to 30 MHz), CMOS (5 to 200 MHz), SSTL/HSTL (5 to 350 MHz), Differential (5 to 710 MHz)

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4
• Broadcast video/audio timing
• Processor and FPGA clocking
• MSAN/DSLAM/PON

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Ensure the I2C pull-up voltage aligns with the system design requirements, as register configuration may be necessary for voltages below 2.5 V.

Selection Notes

Select this component when low jitter and flexible output format configuration are required. Verify that the desired output frequencies do not exceed the limits for single-ended formats (e.g., 200 MHz for CMOS). Confirm compatibility with the target PCIe generation if used for common clock applications.

Part Context

The SI5338A-A-GMR belongs to the Si5338 family of programmable clock generators. It replaces multiple discrete oscillators by providing four independent clocks from a single reference source. The 'GMR' suffix typically indicates a reel packaging format suitable for automated surface-mount assembly.

Replacement Considerations

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