DS1080LU/V+T

Overview

The DS1080LU/V+T is a low-jitter, crystal-based spread-spectrum clock generator manufactured by Analog Devices Inc./Maxim Integrated. It utilizes an integrated phase-locked loop (PLL) to generate output frequencies ranging from 16MHz to 134MHz based on a 16MHz to 33.4MHz input. The device supports selectable clock multiplication rates of 1x, 2x, and 4x, with center dithering magnitudes of ±0.5%, ±1.0%, and ±1.5%. It operates on a single 3.0V to 3.6V supply, consumes 15mA typical current, and features a power-down mode. The component is housed in an 8-lead µSOP package and is qualified for automotive applications.

Feature Summary

• Generates spread-spectrum clocks from 16MHz to 134MHz using a 1:1 PLL multiplier
• Selectable clock multiplication rates of 1x, 2x, and 4x via the CMSEL pin
• Configurable dither magnitudes of ±0.5%, ±1.0%, and ±1.5% via the SMSEL pin
• Automotive qualified part indicated by the /V suffix

Applications

• Automotive systems
• Cable modems
• Cell phones
• Computer peripherals
• Infotainment systems

Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging as defined in the manufacturer's documentation. Confirm the '/V' designation indicates automotive qualification requirements are met for the specific deployment environment. Ensure the input frequency range aligns with the 16MHz to 33.4MHz specification before procurement.

Selection Notes

Select this component when a low-jitter, single-output spread-spectrum clock is required for noise reduction in digital circuits. The device requires an external parallel resonating crystal with an ESR less than 90Ω connected between X1 and X2 pins. Load capacitors must be calculated based on the crystal specifications and the IC's input capacitance to ensure accurate frequency generation.

Part Context

The DS1080L series includes variants such as DS1080LU+, DS1080LU/V+, and their tape-and-reel equivalents. The '/V' suffix specifically denotes automotive qualification, while the 'T' suffix indicates tape-and-reel packaging. All variants share identical electrical characteristics and functionality within the -40°C to +125°C temperature range.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.