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ADC-1722 Dual Analog Audio to AES Converter

The ADC-1722 is a high quality, 24-bit, analog to digital audio converter which allows conversion of two stereo analog audio channel into two AES type digital signals. Sampling rates can be set to 32, 48 or 96 kHz by an internal clock or an external reference signal. An internal digital EBU tone generator facilitates alignment of audio levels. User-defined channel identification data may be encoded in the AES status bits. An input audio signal status is also available indicating input signal silence or overload. The ADC-1722 is compatible with both AES3 and AES-3id digital audio standards.

FEATURES

  • Single or dual stereo channel use (select proper rear)
  • 1 external reference input (Word Clock or AES3-id DARS)
  • 2 AES outputs per stereo channel
  • Balanced AES3 or unbalanced AES3-id outputs
  • 24-bit A to D conversion (16, 20 or 24 bits output word length)
  • 32, 48 and 96 kHz sampling rates
  • -96 to +12 dB of gain adjustment (by 0.5 dB steps)
  • 0 dBFS programmable analog (0 to +28 dBu, 1 dB steps) level mapping
  • Internal EBU tone generator
  • Adjustable silence detection threshold
  • Overload detection and reporting

SPECIFICATIONS

Inputs
  • Signal: Balanced analog stereo audio
  • Impedance: >12 kΩ
  • Reference: Word Clock or AES-3id
  • Impedance: 75Ω
Outputs
  • AES3
    • Level: 4 Vp-p
    • Impedance: 110Ω balanced
    • Jitter: 0.011 UI peak (50 Hz to 100 kHz)
  • AES-3id (SMPTE 276M)
    • Level: 1.0 Vp-p
    • Impedance: 75Ω unbalanced
    • Jitter: 0.011 UI peak (50 Hz to 100 kHz)
Processing Performance
  • Quantization: 24 bits
  • Sampling: 32, 48, 96 kHz
  • SNR: >113 dB (a weighted)
  • 0 dBFS: 0 to +28 dBu (1 dB step)
  • Distortion: < -100 dB (0.001%)
  • Crosstalk: < -100 dB (20 Hz to 20 kHz)
  • Freq. response: ±0.1 dB (20 Hz to 20 kHz)
  • Latency: 810 μs at 48 kHz
  • Tone generator: -18 dBFS 1 kHz sine wave interrupted on left channel (250 ms/3s) EBU R49

 

Miscellaneous
  • Signal presence threshold: From -72 to -54 dBFS (6 dB steps)
  • Silence detect delay: From 0 to 255s (1s steps)
Electrical
  • Power: 5W

ORDERING INFORMATION

Densité 2 frame Densité 3 frame Description
ADC-1722 ADC-1722-3RU Dual analog audio to AES converter
ADC-1722-75-SRP ADC-1722-75-SRP-3RU Single rear connector panel, 75 ohm
ADC-1722-110-SRP ADC-1722-110-SRP-3RU Single rear connector panel, 110 ohm
ADC-1722-75-DRP ADC-1722-75-DRP-3RU Double rear connector panel, 75 ohm
ADC-1722-110-DRP ADC-1722-110-DRP-3RU Double rear connector panel, 110 ohm
 
Remote control iControl, iControl Solo, RCP-200

DOCUMENTS & DOWNLOADS

DATASHEETS

ADC-1722: Dual Analog Audio to AES Converter Datasheet

The ADC-1722 from Grass Valley, a Belden Brand, is a high quality, 24-bit, analog to digital audio converter which allows conversion of two stereo analog audio channel into two AES type digital signals.

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