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.
Key Features
Applications/Uses
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)
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