Datasheet Linear Technology LTC6909IMS#PBF — Datenblatt

LTC6909
1 to 8 Output, Multiphase
Silicon Oscillator with Spread
Spectrum Modulation
Features Description 1-, 2-, 3-, 4-, 5-, 6-, 7-or 8-Phase Outputs
n One External Resistor Sets the Output Frequency
from 12.5kHz to 6.67MHz
n Optional Spread Spectrum Frequency for Improved
EMI Performance
n ±10% Frequency Spreading
n Outputs Can Be Held Low or Floated (Hi-Z)
n Three Spread Spectrum Modulation Rates
fOUT/16, fOUT/32 and fOUT/64
n 400µA Supply Current
n Operates from a Single 2.7V to 5.5V Supply
n Fast Start-Up Time
n First Cycle Accurate
n Outputs Are High Impedance Until Frequency Settles
n MS16 Package The LTC®6909 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. n Applications Synchronizing Multiple Switching Power Supplies n L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents including 6342817, 6614313, …