DS1080LU/V+

Overview

The DS1080LU/V+ 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 16MHz to 33.4MHz crystal or clock input
• Selectable clock multiplier rates of 1x, 2x, and 4x via the CMSEL pin
• Configurable spread-spectrum modulation 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
• PCs

Procurement Notes

Verify that the ordering suffix /V confirms automotive qualification status as defined in the manufacturer's documentation. Ensure the specific package variant matches the required footprint, as the standard designation refers to the 8-lead µSOP form factor. Cross-reference the datasheet revision history to confirm parameter updates regarding supply current limits and dither rates before finalizing procurement specifications.

Selection Notes

Select this component when a low-jitter, programmable spread-spectrum clock source is required for EMI reduction in high-speed digital circuits. The device allows configuration of multiplication factors and dither depths through external pin connections. Ensure the external crystal meets the specified ESR limit of less than 90Ω and parallel load capacitance requirements for proper oscillator operation within the -40°C to +125°C temperature range.

Part Context

The DS1080LU/V+ belongs to the DS1080L family of spread-spectrum crystal multipliers. The 'LU' designation indicates a lead-free/RoHS-compliant version in an 8-lead µSOP package. The '/V' suffix specifically denotes that this unit has undergone qualification for automotive reliability standards, distinguishing it from the commercial grade DS1080LU+ while maintaining identical electrical performance characteristics.

Replacement Considerations

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