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CDCE421A - Low-Jitter Crystal Oscillator Clock Generator

General Description

The CDCE421A is a high-performance, low phase noise clock generator.

It has two fully-integrated, low-noise, LC-based voltage-controlled oscillators (VCOs) that operate in the 1.750-GHz to 2.350-GHz frequency range(1).

Key Features

  • 1.
  • 2 Single Supply at 3.3 V for LVPECL or LVDS Operation.
  • High-Performance Clock Multiplier, Incorporating Crystal Oscillator Circuitry with Integrated Frequency Synthesizer.
  • Low Output Jitter: 380 fs RMS typical (from 10 kHz to 20 MHz).
  • Low Phase Noise at High Frequency (708-MHz LVPECL):.
  • Typically.
  • 109 dBc/Hz at 10 kHz and.
  • 146dBc/Hz at 10 MHz from the carrier.
  • Supports Crystal or LVCMOS Input Frequencies from 27.35 MHz to 38.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CDCE421A www.ti.com..................................................................................................................................................................................................... SCAS873 – APRIL 2009 Fully-Integrated, Wide Range, Low-Jitter Crystal Oscillator Clock Generator FEATURES 1 •2 Single Supply at 3.3 V for LVPECL or LVDS Operation • High-Performance Clock Multiplier, Incorporating Crystal Oscillator Circuitry with Integrated Frequency Synthesizer • Low Output Jitter: 380 fs RMS typical (from 10 kHz to 20 MHz) • Low Phase Noise at High Frequency (708-MHz LVPECL): – Typically –109 dBc/Hz at 10 kHz and –146dBc/Hz at 10 MHz from the carrier • Supports Crystal or LVCMOS Input Frequencies from 27.35 MHz to 38.