SI5332C-D-GM1

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5332C-D-GM1 is a low-jitter, 6-output programmable clock generator from Skyworks Solutions. It utilizes MultiSynth technology to generate any-frequency outputs up to 333.33 MHz with 0 ppm synthesis error and 190 fs RMS jitter. The device supports integer and fractional modes, accepts external crystals (16–50 MHz) or differential/LVCMOS clocks, and offers user-configurable output formats including LVDS, LVPECL, HCSL, and LVCMOS. It operates on a 1.8 V, 2.5 V, or 3.3 V core supply with independent output supplies, housed in a 32-pin QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• MultiSynth technology enables any-frequency synthesis up to 333.33 MHz with 190 fs RMS jitter
• Six configurable outputs supporting LVDS, LVPECL, HCSL, and LVCMOS signal formats
• Supports both integer and fractional frequency synthesis modes
• Independent output supply pins allow mixed-voltage applications

Clock Generators, PLLs, Frequency Synthesizers Applications

• Servers and storage systems
• Ethernet switches and routers
• Small cells and mobile backhaul/fronthaul
• Industrial embedded computing

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific NVM code assigned by ClockBuilder Pro for the D suffix, as this determines the factory-programmed configuration. Confirm that the GM1 designation matches the required 32-pin QFN package and RoHS-6 compliance. Ensure the application requires the C-grade capability for frequencies up to 333.33 MHz rather than the B-grade limit of 200 MHz.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the SI5332C variant when output frequencies exceed 200 MHz, as other grades like SI5332B are limited to 200 MHz. Use the GM1 package for designs requiring up to six differential outputs or twelve LVCMOS outputs. Ensure the design accommodates an external crystal between 16 and 50 MHz or provides an appropriate input clock source for synchronous operation.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5332 family of any-frequency clock generators. The 'C' indicates support for integer and fractional modes with output frequencies up to 333.33 MHz. The 'GM1' suffix specifies the 32-pin QFN package providing up to six outputs. Other variants include GM2 (40-pin, 8 outputs) and GM3 (48-pin, 12 outputs).

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements within the same family include SI5332B-D-GM1 for applications limited to 200 MHz outputs, or SI5332A-D-GM1 if fractional mode is not required but similar pinout compatibility is needed. Verify that any substitute maintains the required jitter performance and output voltage levels.