SL28SRC01BZIT

Clock Generators, PLLs, Frequency Synthesizers Overview

The SL28SRC01BZIT is a low-power PCI Express Gen 2 and Gen 3 clock generator manufactured by Silicon Laboratories. It operates on a 3.3V supply within an industrial temperature range of -40°C to 85°C. The device generates one pair of 100 MHz differential SRC clocks from a 14.318 MHz crystal input, utilizing integrated 33 ohm series termination resistors. It supports spread spectrum clocking via the SSON pin with a triangular profile for EMI reduction. Key performance metrics include cycle-to-cycle jitter below 50 ps, long-term accuracy of ±100 ppm, and PCIe Gen 2 RMS phase jitter of 3.1 ps. The component is housed in a 16-pin TSSOP package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates low-jitter 100 MHz differential serial reference clocks optimized for PCI Express Gen 2 and Gen 3 applications
• Features integrated push-pull output buffers with built-in 33 ohm series termination resistors, eliminating the need for external grounding resistors
• Supports electromagnetic interference (EMI) reduction through a triangular spread spectrum clock profile enabled via the SSON pin

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI Express Gen 2 and Gen 3 system clock generation
• High-speed digital interface timing synchronization
• Industrial equipment requiring low jitter clock sources

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify that the ordering suffix BZIT corresponds to the 16-pin TSSOP package with tape and reel packaging. Confirm the industrial temperature grade (-40°C to 85°C) matches the application requirements. Ensure the crystal loading capacitance calculations account for stray and internal capacitances to maintain specified frequency accuracy.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a dedicated low-power clock generator for PCI Express interfaces is required. The integrated termination resistors simplify PCB layout compared to discrete solutions. Verify compatibility with the required 14.318 MHz parallel resonance crystal specifications to ensure proper frequency operation and ppm tolerance compliance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The SL28SRC01BZIT belongs to the SL28SRC01 family of PCI Express clock generators. The 'B' indicates the first silicon revision, 'Z' denotes the TSSOP package, and 'T' specifies tape and reel packaging. This part is designed as a direct replacement for legacy clock generators in high-speed serial link designs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Check datasheet documentation for specific approved substitute part numbers. Ensure any replacement maintains the 16-pin TSSOP footprint and 3.3V operating voltage. Verify that alternative components support the same 100 MHz differential output and PCIe Gen 2/3 jitter specifications.