MK1707

MK1707 Low EMI Clock Generator Description The MK1707 generates a low EMI output clock from a clock input. The part is designed to dither the LCD interface clock for flat panel graphics controllers. The device uses ICS’ proprietary mix of analog and digital Phase Locked Loop (PLL) technology to spread the frequency spectrum of the output, thereby reducing the frequency amplitude peaks by several dB. The MK1707 offers both centered and down spread from a high speed clock input. Refer to the MK1714-01/02 for a crystal input and the widest selection of input frequencies and multipliers. ICS offers many other clocks for computers and computer peripherals. Consult us when you need to remove crystals and oscillators from your board. Features Packaged in 8-pin SOIC Available in Pb-free package Industrial temperature range available Provides a spread spectrum output clock Supports ATI’s flat panel controllers Guaranteed to +85°C operation Accepts a clock input, provides same frequency dithered output Good for all VGA modes from 80 to 167 MHz Peak reduction by 7dB - 14dB typical on 3rd - 19th odd harmonics Low EMI feature can be disabled Includes Power-down Operating voltage of 3.3 V or 5 V Advanced, low-power CMOS process Block Diagram VDD S1:0 Spread Direction Low EMI Enable 2 PLL Clock Synthesis and Spread Spectrum Circuitry Input Buffer Clock Out ICLK GND MDS 1707 G Integrated Circuit Systems, Inc. ● 1 525 Race Street, San Jose, CA 95126 ● R...