Features and Benefits

  • Factory-Programmed Square-Wave Generator from 33.3MHz to 66.6MHz
  • Center Frequency Remains Constant Independent of Dither Percentage
  • No External Timing Components Required
  • EMI Reduction
  • Variable Dither Frequency
  • User Programmable Down to 130kHz with Divider (Dependent on Master Oscillator Frequency)
  • ±1%, ±2%, ±4%, or ±8% Selectable Dithered Output
  • Glitchless Output-Enable Control
  • I²C-Compatible Serial Interface
  • Nonvolatile Settings
  • Power-Down Mode
  • Programmable Output Power-Down/Disable Mode

Product Details

The DS1089L is a clock generator that produces a spread spectrum (dithered) square-wave output of frequencies from 130kHz to 66.6MHz. The DS1089L is shipped from the factory programmed at a specific frequency. The DS1089L is pin-for-pin compatible with the DS1087L, however, the DS1089L dithers at equal percentages above and below the center frequency. The user still has access to the internal frequency divider, selectable ±1%, ±2%, ±4%, or ±8% dithered output, dithering rate, and programmable output powerdown/disable mode through an I²C-compatible programming interface. All the device settings are stored in nonvolatile (NV) EEPROM allowing it to operate in stand-alone applications. The DS1089L also has power-down and output-enable control pins for power-sensitive applications.


  • Cable Modems
  • Computer Peripherals
  • Copiers
  • POS Terminals
  • Printers

Product Lifecycle icon-recommended 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.

Product Recommendations

DS1089L Companion Parts

Recommended Related Parts

Design Resources

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.

PCN-PDN Information

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