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Inside the ADS RDX-150-EF USB interface
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December 09, 2011, 10:34:56 PM
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  • BSD2000
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I just picked up a cheap USB recording interface, an ADS RDX-150-EF for $14. It uses a Burr Brown PCM2902E AD/DA chipset and a TI OPA4374A op-amp. It's a very simple design with only three main components. Here's a few pictures:

Packaging and front of the unit:
[attach=1]

Rear connections:
[attach=2]

Inside shot:
[attach=3]

Closeup of the chips:
[attach=4]

Specifications:

Capture:
  • Bit Rate: 16-bit
  • Sampling Rate: 8, 11, 16, 22.05, 32 44.1 or 48 kHz
  • THD+N: 0.01%
  • SNR: 80 dB
Playback:
  • Bit Rate: 16-bit
  • Sampling Rate: 32, 44.1 and 48 kHz
  • THD+N: 0.005%
  • SNR: 96 dB
Input/Output:
  • Audio Input: RCA Stereo (Left and Right); SPDIF (Toslink)
  • Audio Output: RCA Stereo (Left and Right); SPDIF (Toslink)
  • Power: USB bus powered (no external supply needed)
  • USB: Type B USB 1.1 and USB 2.0 compatible as a full speed device
LEDs:
  • Power
  • SPDIF signal
Unit Dimensions:
1.1 x 5.6 x 3.25-inches (H x W x D, approximate)

Once I thoroughly test the unit I will post an extensive review with samples.
« Last Edit: September 14, 2014, 09:52:36 AM by Admin »
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