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Crystek Corporation Ultra-Low Phase Noise Oscillators

Crystek Corporation Ultra-Low Phase Noise Oscillators come in two different package sizes such as the CCHD-957 and CCHD-575. The CCHD-957 ultra-low phase noise Oscillators are designed specifically for High-Definition audio (HD audio). These oscillators feature a typical low close-in phase noise of -100dBc/Hz at 10 Hz offset and a noise floor of -169dBc/Hz. The CCHD-957 oscillators come with a "Standby Function" that shuts down the internal oscillator in addition to the output buffer being placed in Tri-State. Crystek Corporation Ultra-Low Phase Noise Oscillators are housed in a 9mm × 14 mm SMT package and operate with a +3.3V power supply.

The CCHD-575 ultra-low phase noise oscillators are the lowe jitter clock oscillators that come in a 5mm × 7.5mm package. These oscillators feature a typical phase jitter of 82fSec RMS at 100MHz. The CCHD-575 oscillators offer -90 dBc/Hz @ 10 Hz close-in phase noise. These oscillators come with an output driver that is capable of driving ±24mA which translates to ~600ps at 100MHz rise/fall time with a 15pF load.

Features

  • CCHD-575 Oscillators:
    • 50MHz to 130MHz frequency range
    • 0°C to +70°C temperature range
    • -55°C to +90°C storage temperature range
    • 3.3V±0.3V input voltage
    • Input current of 15mA (typical) and 25mA (maximum)
    • CMOS output:
      • Symmetry: 45%/55% (maximum) @ 50% Vdd
      • Rise/Fall Time: 2nsec (maximum) @ 20% to 80% Vdd
      • Logic: "0" = 10% Vdd maximum
      • Logic:"1" = 90% Vdd (minimum)
      • 15pF load 
      • ±24mA (maximum) output current
  • CCHD-957 Oscillators:
    • 10MHz to 50MHz frequency range
    • 0°C to +70°C operating temperature range
    • -45°C to 90°C storage temperature range
    • 3.3V±0.3V input voltage
    • 15mA (typical) and 25mA (maimum) input current
    • 1.5mA (maximum) input current (disabled mode) 
    • HCMOS output:
      • 45%/55% (maximum) @ 50%Vcc symmetry
      • 3nsec (maximum) @ 20% to 80% Vcc rise/fall time
      • Logic: "0" = 10% Vcc (maximum)
      • Logic "1" = 90% Vcc (minimum)
      • 15pF load
      • ±24mA (maximum) output current

Applications

  • CCHD-575 Oscillators:
    • DACs
    • ADCs
    • Low phase signal sources
    • Test and measurement
  • CCHD-957 Oscillators:
    • Digital Audio Broadcasting (DAB)
    • Professional CD audio equipment
    • DACs and ADCs for HD audio
Publié le: 2011-11-03 | Mis à jour le: 2022-11-11