Features and Benefits
- 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
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. 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.
- Embedded Microcontrollers
- Industrial Controls
- Switch-Mode Power Supplies
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
DS1090 Reliability Data1/12/2023
Frequency Calculator for the DS109012/22/2005
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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Buy Now Pricing
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