CDC421A312 - Texas Instruments

CDC421A312 Low-Jitter Crystal Oscillator Clock Generator

The CDC421Axxx is a high-performance, low-phase-noise clock generator. It has an integrated low-noise, LC-based voltage-controlled oscillator (VCO) that operates within the 1.75 GHz to 2.35 GHz frequency range. It has an integrated crystal oscillator that operates in conjunction with an external AT-cut crystal to produce a stable frequency reference for a ph.

Features

1
•2 Single 3.3-V Supply
• High-Performance Clock Generator, Incorporating Crystal Oscillator Circuitry with Integrated Frequency Synthesizer
• Low Output Jitter: As low as 380 fs (RMS integrated between 10 kHz to 20 MHz)
• Low Phase Noise at 312.5 MHz:
  – Less than
  –120 dBc/Hz at 10 kHz and
  –147 dBc/Hz at 10-MHz offset from carrier
• Supports Crystal or LVCMOS Input Frequencies at 31.25 MHz, 33.33 MHz, and 35.42 MHz
• Output Frequencies: 100 MHz, 106.25 MHz, 125 MHz, 156.25 MHz, 212.5 MHz, 250 MHz, and 312.5 MHz
• Differential Low-Voltage Positive Emitter Coupled Logic (LVPECL) Outputs
• Fully.