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Product Overview

DC1705B-A demonstration board is for the evaluation of LTC6946-1, an ultralow noise and spurious integer-N frequency synthesizer with integrated VCO. IC includes a reference divider, phase-frequency detector (PFD) with phase-lock indicator, ultralow noise charge pump, integer feedback divider, and VCO output divider. The charge pump contains selectable high and low voltage clamps useful for VCO monitoring. The integrated low noise VCO uses no external components. It is internally calibrated to the correct output frequency with no external system support. The part features a buffered, programmable VCO output divider with a range of 1 through 6, providing a wide frequency range. A DC590 USB serial controller board is used for SPI communication with the LTC6946, controlled by the supplied PLLWizard software.
  • Low noise integer-N PLL with integrated VCO
  • Excellent spurious performance
  • Output divider (1 to 6, 50% Duty cycle)
  • Output buffer muting
  • Low noise reference buffer
  • Charge pump current adjustable
  • Configurable status output
  • SPI compatible serial port control
  • PLLWizard software design tool support
  • VCO frequency range 2.240Ghz to 3.740Ghz


Wireless; Defence, Military & Aerospace; Test & Measurement; Communications & Networking
Companion with DC590B USB Serial Controller Board. Sold separately
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Product Specifications, Documents & More

  • Application Sub Type: Frequency Synthesizer
  • Features: Ultralow Noise and Spurious Integer-N Frequency Synthesizer with VCO
  • Kit Application Type: Clock & Timing
  • Kit Contents: Demonstration Board, User Guide
  • SVHC: No SVHC (17-Dec-2014)
  • Silicon Core Number: LTC6946-1
  • Silicon Manufacturer: Linear Technology

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