DS1080CLU+

Overview

The DS1080CLU+ is a low-jitter, crystal-based clock generator with an integrated phase-locked loop (PLL) designed to generate spread-spectrum clock outputs ranging from 8MHz to 64MHz. It operates on a single 3.0V to 3.6V supply and supports an input frequency of 8MHz to 16MHz. The device features selectable clock multiplier rates of 1x, 2x, and 4x, along with center spread-spectrum dithering magnitudes of ±0.5%, ±1.0%, and ±1.5%. It includes power-down and spread-spectrum disable modes, operates within a -40°C to +125°C temperature range, and is housed in an 8-pin µSOP package.

Feature Summary

• Generates spread-spectrum clocks from 8MHz to 64MHz using an integrated PLL
• Pin-programmable clock multiplier rates: 1x, 2x, and 4x
• Selectable center spread-spectrum modulation magnitudes: ±0.5%, ±1.0%, and ±1.5%
• Low cycle-to-cycle jitter with peak values of 75ps at 8MHz output

Applications

• Cable Modems
• Cell Phones
• Computer Peripherals
• PCs
• Printers

Procurement Notes

Verify the component status as discontinued or limited availability through official Analog Devices channels. Confirm RoHS compliance and lead-free packaging specifications. Ensure the ordering suffix matches the required tape-and-reel or tube packaging format for production integration.

Selection Notes

Select this component when a low-cost, low-jitter spread-spectrum solution is required for EMI reduction. Ensure the application utilizes a parallel resonating crystal with an ESR less than 90Ω or an external clock source between 8MHz and 16MHz. Verify that the load capacitance requirements align with the calculated values based on the device's input capacitance.

Part Context

The DS1080CL series belongs to Maxim Integrated's EconOscillator family of spread-spectrum clock generators. The 'U' suffix denotes the 8-pin µSOP package, while the '+' indicates RoHS-compliant manufacturing. This specific part number represents the standard commercial/industrial temperature variant without automotive qualification markings.

Replacement Considerations

Direct pin-compatible replacements may include other members of the DS1080L family, such as the DS1080LU+, which offers similar functionality but potentially different temperature ranges or packaging options. Cross-reference electrical parameters like supply voltage and output frequency limits before substitution.