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Spread-Spectrum Crystal Multiplier

Ideal for Applications Requiring a Clock with a Precise Center Frequency, Yet Need to Modulate Frequency to Reduce EMI at the Center Frequency and Its Harmonics

Product Details

Key Features

Applications/Uses

Parametric specs for Clock Generators
End Equipment General Purpose
fIN (MHz) (min) 16
fIN (MHz) (max) 33.4
fOUT (MHz) (min) 134
fOUT (MHz) (max) 134
Fixed or Continuous Frequency Fixed
Output Levels LVCMOS
Out-
puts
1
PLLs 1
Program-
mability
Pin
Spread Spectrum Yes
Output Jitter (ps) (RMS) 75
VSUPPLY (V) 3.3
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.38
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Simplified Block Diagram

Technical Docs

Data Sheet Spread-Spectrum Crystal Multiplier Mar 19, 2013

Support & Training

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Parameters

Parametric specs for Clock Generators
End Equipment General Purpose
fIN (MHz) (min) 16
fIN (MHz) (max) 33.4
fOUT (MHz) (min) 134
fOUT (MHz) (max) 134
Fixed or Continuous Frequency Fixed
Output Levels LVCMOS
Out-
puts
1
PLLs 1
Program-
mability
Pin
Spread Spectrum Yes
Output Jitter (ps) (RMS) 75
VSUPPLY (V) 3.3
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.38

Key Features

  • Generates Spread-Spectrum Clocks from 16MHz to 134MHz
  • Selectable Clock Multiplier Rates of 1x, 2x, and 4x
  • Center Spread-Spectrum Dithering
  • Selectable Spread-Spectrum Modulation Magnitudes of ±0.5%, ±1.0% and ±1.5%
  • Spread-Spectrum Disable Mode
  • Low Cycle-to-Cycle Jitter
  • Power-Down Mode with High-Impedance Output
  • Low Power Consumption
  • 3.0V to 3.6V Single Supply Operation
  • -40°C to +125°C Temperature Operation
  • Small 8-Lead µSOP Package

Applications/Uses

  • Automotive
  • Cable Modems
  • Cell Phones
  • Computer Peripherals
  • Copiers
  • PCs
  • Printers

Description

The DS1080L is a low-jitter, crystal-based clock generator with an integrated phase-locked loop (PLL) to generate spread-spectrum clock outputs from 16MHz to 134MHz. The device is pin-programmable to select the clock multiplier rate as well as the dither magnitude. The DS1080L has a spread-spectrum disable mode and a power-down mode to conserve power.

Simplified Block Diagram

DS1080L: Typical Operating Circuit DS1080L: Typical Operating Circuit Zoom icon

Technical Docs

Data Sheet Spread-Spectrum Crystal Multiplier Mar 19, 2013

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .