DS1083LR+T

Overview

The DS1083LR+T is a spread-spectrum clock modulator IC designed to reduce electromagnetic interference (EMI) in digital electronic equipment. It utilizes an integrated phase-locked loop (PLL) to accept an input clock signal between 16MHz and 134MHz, delivering a center-dithered output. The device features selectable modulation magnitudes of ±0.5%, ±1%, ±1.5%, or ±2% via external pins. It operates on a single 3.3V supply with a typical current consumption of 15mA at maximum frequency. The component is housed in a 6-lead Thin SOT23 package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Modulates input clocks from 16MHz to 134MHz using center-spread dithering
• Selectable spread-spectrum magnitudes: ±0.5%, ±1%, ±1.5%, and ±2%
• Low cycle-to-cycle jitter of 75ps typical
• Automatic dither rate adjustment based on input frequency

Applications

• LCD panels for TVs, desktop monitors, notebook, and tablet PCs
• Automotive telematics and infotainment systems
• Printers

Procurement Notes

Verify the specific ordering suffix 'T' indicates tape-and-reel packaging when sourcing this component. Confirm that the 'L' variant corresponds to the 3.3V single-supply specification. Ensure the supplier provides documentation confirming the lead-free status associated with the '+' designation. Check for availability as distribution channels may vary for this specific package type.

Selection Notes

Select the DS1083LR+T when EMI reduction is required for high-clock frequency-based digital equipment without adding mechanical shielding. Choose this part if the design requires a small 6-lead Thin SOT23 footprint. Ensure the application demands a 3.3V supply and an operating temperature range extending to +125°C. Verify that the input clock frequency falls within the 16MHz to 134MHz operational window.

Part Context

This component belongs to the DS1083L series of spread-spectrum clock modulators manufactured by Analog Devices Inc./Maxim Integrated. The 'R' suffix typically denotes the automotive-grade temperature range (-40°C to +125°C), while 'T' specifies tape-and-reel packaging. It serves as a specialized timing solution for reducing radiated emissions in consumer and automotive electronics.

Replacement Considerations

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