General Description
The DS1083L is a spread-spectrum clock modulator IC that reduces EMI in high-clock, frequency-based, digital electronic equipment.
Using an integrated phase-locked loop (PLL), the DS1083L accepts an input clock signal in the range of 16MHz to 134MHz and delivers a spread-spectrum modulated output clock signal. The PLL modulates, or dithers, the output clock about the center input frequency at a pin-selectable magnitude. The DS1083L automatically adjusts the dither rate based on the input clock frequency to maximize the EMI reduction.
FEATUREs
♦ Modulates a 16MHz to 134MHz Clock with Center Spread-Spectrum Dithering
♦ Selectable Spread-Spectrum Modulation Magnitudes of:
±0.5%
±1%
±1.5%
±2%
♦ Low 75ps Cycle-to-Cycle Jitter
♦ Automatic Dither Cycle Rate Adjustment to Maximize EMI Reduction
♦ Low Cost
♦ Low Power Consumption
♦ 3.3V Single Voltage Supply
♦ -40°C to +125°C Operating Temperature Range
♦ Small 6-Lead Thin SOT23 Package
APPLICATIONs
LCD Panels for TVs, Desktop Monitors, Notebook and Tablet PCs
Automotive Telematics and Infotainment
Printers