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Digitally Controlled Crystal Oscillators (DCXO)

Spectrum Control’s Digitally Controlled Crystal Oscillators (DCXO) combine the frequency stability of a crystal oscillator source with the flexibility of direct digital synthesis (DDS) in a temperature controlled housing to provide a highly accurate output signal.

The output frequency generation is controlled by a 16 bit binary word supplied from an external source.

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MIS-20079/26 Specifications

  • Output Frequency: 70 MHz
  • Frequency Deviation: ± 140 KHz
  • Frequency Increment: 4.2735 Hz
  • Output Power: 9 ± 0.8 dBm
  • Long Term Stability ± 1.5 x 10-6/yr.
  • Phase Noise: >138 dB/10 KHz
  • Isolation: ≥40 dB
  • Spurious Levels: ≥84 dBc
  • Mech Freq. Adjustment: ± 5 ppm min.
  • Operating Temp. Range: -20° to 60°C

MIS-20079/27 Specifications

  • Output Frequency: 85 MHz
  • Frequency Deviation: ± 70 KHz
  • Frequency Increment: 2.13675 Hz
  • Output Power: 0 ± 0.8 dBm
  • Long Term Stability ± 1.5 x 10-6/yr.
  • Phase Noise: >138 dB/10 KHz
  • Isolation: ≥40 dB
  • Spurious Levels: ≥64 dBc
  • Mech Freq. Adjustment: ± 5 ppm min.
  • Operating Temp. Range: -20° to 60°C