MK1707SITR

Clock Generators, PLLs, Frequency Synthesizers Overview

The MK1707SITR is a low EMI clock generator manufactured by IDT, now part of Renesas Electronics. It generates a dithered output clock from a high-speed input to reduce electromagnetic interference in flat panel graphics controllers. The device utilizes analog and digital PLL technology to spread the frequency spectrum, achieving typical peak reductions of 7dB to 14dB on odd harmonics. It operates within an industrial temperature range of -40°C to +85°C and supports supply voltages between 3.135V and 5.5V. The component accepts a clock input and provides a same-frequency dithered CMOS output, suitable for VGA modes ranging from 80MHz to 167MHz.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Spread spectrum output clock generation with selectable direction (center or down spread) and percentage via tri-level select pins.
• Typical EMI peak reduction of 7dB to 14dB on the 3rd through 19th odd harmonics.
• Industrial temperature rating (-40°C to +85°C) and operation at 3.3V or 5V supply voltages.
• Integrated power-down mode and Low EMI Enable (LEE) control.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Dithering LCD interface clocks for flat panel graphics controllers.
• Supporting ATI flat panel controller architectures.
• Reducing EMI in computer peripherals operating at frequencies up to 167 MHz.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify that the specific ordering suffix matches the required temperature grade and packaging format. The 'SI' suffix indicates the industrial temperature range (-40°C to +85°C), while 'TR' denotes tape and reel shipping. Confirm RoHS compliance status as non-green parts have reached end-of-life. Ensure the source document explicitly lists the full part number to validate availability and specifications.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the MK1707SITR when an industrial temperature range is required for flat panel display applications. This variant differs from commercial versions by its extended lower temperature limit. Verify that the system design accommodates the 8-pin SOIC package dimensions. Check if the specific spread spectrum configuration provided by the tri-level inputs meets the target EMI reduction requirements without external components.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the MK1707 family of low EMI clock generators originally produced by Integrated Device Technology (IDT). Following corporate acquisitions, IDT became part of Renesas Electronics Corporation. The MK1707 series is designed specifically for removing crystals and oscillators from board designs while maintaining signal integrity through spread spectrum techniques.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The datasheet references the MK1714-01/02 for crystal input options but does not list direct replacements for the MK1707SITR.