Description

The MK1705A generates a low EMI output clock from a clock or crystal input. The part is designed to dither the LCD interface clock or other clocks for ATI’s flat panel graphics controllers. The device uses ICS/MicroClock’s proprietary mixture of analog and digital Phase-Locked Loop (PLL) technology to synthesize the frequency, and our patented technique to spread the frequency spectrum of the output, thereby reducing the frequency amplitude peaks by several dB.

Features

• Packaged in 8 pin SOIC

• Provides a spread spectrum output clock

• Supports ATI’s flat panel controllers

• Accepts a clock input, provides same frequency dithered output

• Good for all VGA modes from 40 to 167 MHz

• Peak reduction by 7dB - 14 dB typical on 3rd-19th odd harmonics

• Low EMI feature can be disabled

• 3.3 V or 5 V ±10 supply voltage

• Advanced, low power CMOS process