LTC6909
Info: : PRODUCTION
searchIcon
cartIcon

LTC6909

1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation

Show More showmore-icon

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $3.10
Features
  • 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
Additional Details
show more Icon

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
Part Models 6
1ku List Price Starting From $3.10

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC6909CMS#PBF
  • HTML
  • HTML
LTC6909CMS#TRPBF
  • HTML
  • HTML
LTC6909HMS#PBF
  • HTML
  • HTML
LTC6909HMS#TRPBF
  • HTML
  • HTML
LTC6909IMS#PBF
  • HTML
  • HTML
LTC6909IMS#TRPBF
  • HTML
  • HTML

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 4, 2020

- 20_0132

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC6909CMS#PBF

PRODUCTION

LTC6909CMS#TRPBF

PRODUCTION

LTC6909HMS#PBF

PRODUCTION

LTC6909HMS#TRPBF

PRODUCTION

LTC6909IMS#PBF

PRODUCTION

LTC6909IMS#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 4, 2020

- 20_0132

arrow down

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC6909CMS#PBF

PRODUCTION

LTC6909CMS#TRPBF

PRODUCTION

LTC6909HMS#PBF

PRODUCTION

LTC6909HMS#TRPBF

PRODUCTION

LTC6909IMS#PBF

PRODUCTION

LTC6909IMS#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Recently Viewed