MAX31D80T-UGQ+T

Clock Generators, PLLs, Frequency Synthesizers Overview

The MAX31D80T-UGQ+T is a spread-spectrum clock generator featuring an internal phase-locked loop (PLL). It generates a down-dithered frequency-modulated clock output ranging from 2MHz to 134MHz. The device accepts an input clock or crystal between 8MHz and 134MHz, buffering the input signal on a separate pin. Factory-programmable for specific input/output frequency combinations, it operates at a 3.3V supply voltage with a typical current of 22mA. The component is housed in a compact 10-pin TDFN package with an exposed pad and supports an extended temperature range of -40°C to +125°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates down-dithered spread-spectrum clocks with programmable magnitude up to -3% via SMSEL pins
• Factory-programmable output frequencies within the 2MHz to 134MHz range
• Accepts 8MHz to 134MHz clock inputs or 8MHz to 34MHz crystals
• Includes a buffered XOUT pin that replicates the input frequency

Clock Generators, PLLs, Frequency Synthesizers Applications

• Graphics Cards
• Set-Top Boxes
• Automotive Infotainment Systems
• Printers

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the factory-programmed output frequency configuration matches the design requirements before procurement, as the 'xxx' suffix indicates specific settings. Confirm the lead-free/RoHS-compliant status indicated by the '+' suffix. Ensure the tape-and-reel packaging format aligns with automated assembly equipment capabilities.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model over the MAX31C80 variant when down-dithering is required rather than center-dithering. Verify that the input source falls within the 8MHz to 134MHz range. Check if the user-configurable dither magnitude options provided by the SMSEL pins meet the electromagnetic interference (EMI) reduction targets for the application.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the MAX31C80/MAX31D80 family of spread-spectrum clock generators. While the MAX31C80 provides center-dithered modulation, the MAX31D80 specifically offers down-dithered modulation. Both share identical pinouts, packages, and electrical characteristics, differing primarily in the dither mode selected during manufacturing.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The MAX31C80T-UGQ+T serves as a functional alternative if center-dithered modulation is acceptable instead of down-dithered. Other variants within the MAX31C80/MAX31D80 series may be considered if different factory-programmed input/output frequency combinations are needed.