Maxim Integrated DS1090
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 pin-programmed dither circuit.| Part No. | DS1090 |
|---|---|
| Datasheet | DS1090 Download |
| Manufacturer |  Maxim Integrated |
| Description | Spread-Spectrum EconOscillator |
| Buy | Stock & Price |
GENERAL DESCRIPTION
These features allow the DS1090 to be used in applications where a spread-spectrum clock is desired to reduce radiated emissions. A combination of factory-set prescalers and external resistor allows for output frequencies ranging from 125kHz to 8MHz. Both dither frequency and dither percentage are set using control pins.APPLICATIONS
●● Switched-Mode Power Supplies●● Servers
●● Printers
●● Embedded Microcontrollers
●● Industrial Controls Typical Operating Circuit VIN 45kΩ TO 91kΩ VCC VCC OUT JC0 DS1090 JC1 RSET J0 J1 GND DC-DC STEP-DOWN CONVERTER VOUT EconOscillator is a trademark of Maxim Integrated Products, Inc.
FEATURES
●● Low-Cost, Spread-Spectrum EconOscillator™●● Simple User Programming
●● O utput 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 +...
