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Analogue-Audio

 

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data sheet
(144 KB)

 


HXDA D/A Converter

16-channel Analogue-output Board with 24-bit D/A Converters
    HXDA D/A Converter Board
  • 16 channels
  • Dynamic range: 120 dB(A) @ 15 dBu (typ.)
  • THD&N: <0.001% @ 4 dBu (typ.)
  • Outputs galvanically isolated in pairs
  • Decreased power consumption
This output board features eight 2-channel 24-bit D/A converters producing a maximum output level of 15 dBu with a dynamic range of 120 dB(A). Exceptional balancing specifications, transformer isolation, low output impedance, and optimal dynamic range provide versatile connectivity for power amplifiers or analogue tape machines. The two channels of each output pair are balanced but share a common potential. Each output pair is floating with respect to the other pairs.
Thanks to the circuit design and the manufacturing quality, no calibration is required; therefore manually adjustable electronic components are not incorporated.
This board was specifically designed to meet the requirements of radio applications (15 dBu maximum output level) or static installations featuring a large number of channels (for example, feeding power amplifiers in a sound-reinforcement environment).
 

 

HXDA DSUB

 

HXDA RJ45

Stage Tec D/A-Converter Technology

›  Negligible converter inaccuracies  Stage Tec D/A converters produce a stable and almost perfect conversion curve, showing virtually no errors over the entire conversion range.

›  Ultra-Low THD  Stage Tec D/A converters offer ultra-low THD over a wide level range, making them ideally suited to applications such as monitoring, large sound-reinforcement systems, and high-quality analogue recording.

›  Homogenous Noise Spectrum  Stage Tec D/A converters have a homogenous noise spectrum over the entire conversion range. The intrinsic noise is practically imperceptible even at very low input levels.

›  Low Latencies  Thanks to the ultra-low latency, the HXDA board is ideally suited to live-sound applications.

Transformer-Insulated Output Stage

Thanks to an innovative and sophisticated design, all channels feature transformer-insulated output circuits. This provides the following benefits when compared with traditional switch-based solutions:

  • Insusceptibility to magnetic fields
  • Low THD&N at both low and high levels and even at low frequencies
  • Low output impedance
  • Transformer-Insulated Output Stage
    Precision balancing
  • Compact dimensions and low weight

RJ45 Ports

The HXDA is available with an RJ45 port. This provides for quick and economical wiring using standard S/STP lines particularly in static installations. The port wiring complies with the EN 50173 standard. The mounting width of the RJ45 version is just 4 HP on the Base Device.
The RJ 45-ADP adapter PCB is available for connecting signal sources requiring XLR ports. This allows an XLR extension to be accomplished via a multicore S/STP or UTP multicore (CAT5) cable. The RJ-45 wiring is the same as on the HXDA board.

Low Space Requirements

The HXDA requires just 4 HP in the Base Device.

Application Note

With regard to the common earth potential shared by the individual channel pairs, the outputs should not be connected to patchbays. Ground loops may occur when using single-channel output signals.
The HXDA is perfectly suited to stereo or multichannel applications.
 

 
Versions
HXDA-RJ

version with RJ45 ports

HXDA-DSUB version with 25-pole D-Sub terminal
 
 
HXDA Specifications
  Unless otherwise indicated, all data given relate to the following conditions: All measurements comply with the IRT standards (»IRT Pflichtenheft 3/2«, issued in July 1982 and »IRT Pflichtenheft 3/5«, issued in October 1990) and AES standards (AES-17, issued in 1998). Reference frequency: 1 KHz. Sample rate: 48 KHz. Full-scale level: 0 dBFS = 15  dBu.
Outputs 16 channels per board
EN 50173-compliant RJ45 port for S/STP lines (CAT5)
25-pol. D-Sub
electrically balanced outputs, output pairs galvanically isolated
Channel configuration short-circuit-proof
insusceptible to inadvertent phantom-power routing
analogue muting for supply-voltage enabling / disabling
Output level 0 to 15 dBu @ > 600 ohm load adjustable in 1-dB steps
Dielectric strength common-mode voltage < ±200 V DC, < 250 V AC (max. 1 min.)
ESD protection 15 kV
Frequency response 20 to 20,000 Hz (+0 dB, -0.2 dB), integrated DC filter
Output impedance 19 ohm (typ.)
Output-impedance CMR > 60 dB @ 20 to 20,000 Hz
90 dB @ 50 Hz (typ.)
80 dB @ 20 KHz (typ.)
Offset voltage < 10 mV (0.1 mV typ.)
Gain range -63 to 15 dB (and mute), digitally adjustable in 1-dB steps; click-free adjustment
THD&N 0.001% @ 15 dBu (typ.)
< 0.01% @ -20 to +15 dBu (typ.); < 0.02% granted
< 0.001% @ 4 dBu (typ.)
< 0.18% @ -60 dBFS
Dynamic range @0 dBFS = 15  dBu typ. 120 dB(A)
typ. 117 dB RMS
Idle-channel noise -116 dBFS (RMS) (typ.)
-112 dBFS (CCIR 1K) (typ.)
-101 dBFS (CCIR 2K RMS) (typ.)
Crosstalk attenuation > 100 dB (20 to 20,000 Hz); > 130 dB (typ.)
HF resistance HF-demodulation resistant according to IRT standards (»IRT-Pflichtenheft 3/5«) and European standards
EMC EN 55022, Class B, EN 55013
D/A conversion Delta-Sigma converters
24-bit resolution, 128 times oversampling
sample rates 44.1; 48; 88.2; 96 KHz
Propagation delay < 0.23 ms @ 48 KHz sample rate
    upward

Stage Tec Entwicklungsgesellschaft für professionelle Audiotechnik mbH, D-12459 Berlin, Tabbertstr. 10
Phone: +49 30 639902-0, Fax: +49 30 639902-32, , © 2002-2008 Stage Tec Berlin

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