General Description
The DS1090 is a low-cost, dithered oscillator intended to be used as an external clock for switched-mode power supplies and other low-frequency applications. The dithering or sweeping function reduces peak-radiated emissions from the power supply at its fundamental frequency, as well as harmonic frequencies. The device consists of a resistor-programmed master oscillator, factory-programmed clock prescaler, and a pinprogrammed dither circuit.

FEATUREs
♦ Low-Cost, Spread-Spectrum EconOscillator™
♦ Simple User Programming
♦ Output Frequency Programmable from 125kHz to 8MHz
♦ Dither Percentage Programmable from 0% to 8%
♦ Dither Rate Programmable (fMOSC / 512, 1024, 2048, or 4096 )
♦ 3.0V to 5.5V Single-Supply Operation
♦ CMOS/TTL-Compatible Output
♦ Operating Temperature Range: -40°C to +85°C

APPLICATIONs
    Switched-Mode Power Supplies
    Servers
    Printers
    Embedded Microcontrollers
    Industrial Controls
    Automotive Applications