The LTC6909 is an easy to use precision oscillator that can provide 1-, 2-, 3-, 4-, 5-, 6-, 7- or 8-phase synchronized outputs. The LTC6909 also offers spread spectrum frequency modulation (SSFM), which can be enabled to improve electromagnetic compatibility (EMC) performance. Eight separate outputs provide up to eight rail-to-rail, 50% duty cycle clock signals. Using three logic inputs, the outputs are configured for phase separation, ranging from 45° to 120° (three to eight phases). The clock outputs can also be held low or configured for Hi-Z. A single resistor, combined with the phase configuration, sets the output frequency, based on the following formula: The LTC6909 can be used in applications requiring only one or two output phases. Alternatively, the LTC6908 family of parts provides the same two output signals but in a smaller SOT-23 or 2mm × 3mm DFN package. The LTC6908-1 provides complimentary (180°) outputs while the LTC6908-2 provides quadrature (90°) outputs. Applications * Synchronizing Multiple Switching Power Supplies * 1-, 2-, 3-, 4-, 5-, 6-, 7- or 8-Phase Outputs * One External Resistor Sets the Output Frequency from 12.5kHz to 6.67MHz * Optional Spread Spectrum Frequency for Improved EMI Performance * ±10% Frequency Spreading * Outputs Can Be Held Low or Floated (Hi-Z) * Three Spread Spectrum Modulation Rates fOUT/16, fOUT/32 and fOUT/64 * 400μA Supply Current * Operates from a Single 2.7V to 5.5V Supply * Fast Start-Up Time * First Cycle Accurate * Outputs Are High Impedance Until Frequency Settles * MS16 Package https://elecena.pl/product/809519/1-to-8-output-multiphase-silicon-oscillator-with-spread-spectrum-modulation 2009-02-17 https://elecena.pl/product/809519/1-to-8-output-multiphase-silicon-oscillator-with-spread-spectrum-modulation 2018-01-16 https://elecena.pl/product/809519/1-to-8-output-multiphase-silicon-oscillator-with-spread-spectrum-modulation 2025-01-19