Behringer U-Control UCA202

The Behringer U-Control UCA202 is an inexpensive (~25 EUR) small USB sound card that I bought when my older M-Audio Transit USB wasn't working well on my Seagate GoFlex Home. I'm also planning to use it on my Buffalo WZR-HP-AG300H WiFi router. This blog post documents some of its features and tests.

This sound card doesn't need any drivers for Win, Mac or Linux. The built in TI PCM2902E Audio Chip is supported by the major operating systems.

I took a couple of photos of the hardware. You can see them in my Picasa Album Behringer U-Control UCA202.

The main features are:

  • Low Latency
  • 16bit/48kHz ADC/DAC
  • Line In (2x RCA)
  • Line Out (2x RCA)
  • S/PDIF Out (TOSlink)
  • 1x Head Phone Port (3.5mm)
  • Bus powered
  • Plug and Play on Win, Mac, Linux

List of Electronic Components (Integrated Circuits)

  • IC1: TI PCM2902E Stereo Audio CODEC w/USB Interface, Single-Ended Analog Input/Output & S/PDIF
  • IC2: AIC1734-35XXA ("CA35G 009A2") 300mA Low Dropout Linear Regulator
  • IC3: VU4I (?)
  • IC4 & IC5: NJM 2740 ("A007H") Dual Operational Amplifier
  • IC6: NJM 4556A Dual High Current Operational Amplifier

ADC / DAC Quality Analysis by oleuthold

Noise measurements made using lxsndtest by Oskar Leuthold:

Pink noise result of UCA202:
Pink noise result of UCA202

Transfer function:
Transfer function

Distortion result for UCA202:
Distortion result for UCA202

Parametric results for UCA202 (from distortion measurement):
Parametric results for UCA202 (from distortion measurement)

What the acronyms stand for:

They are explained in the manual on page 10 (of 16) and the author recommends to read the following papers in order to understand these characteristics:

  • Maxim Application Notes 728 and 729: “Defining and Testing Dynamic Parameters in High-Speed ADCs”
  • IEEE Standard 1241 “IEEE Standard for Terminology and Test Methods for Analog-to-Digital Converters”
  • MT-003. “TUTORIAL. Understand SINAD, ENOB, SNR, THD, THD + N, and SFDR so You Don't Get Lost in the Noise Floor” by Walt Kester.

also worth having a look at: