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
Pink noise result of UCA202:
Distortion result for UCA202:
Parametric results for UCA202 (from distortion measurement):
What the acronyms stand for:
- DC: Direct current LSB: Least significant bit
- FUND: Fundamental
- THD: Total harmonic distortion
- ENOB: Effective number of bits
- SNR: Signal-to-noise ratio
- SINAD: Signal-to-noise and distortion ratio
- SFDR: Spurious-Free Dynamic Range
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:
- Phd thesis written by Eulalia Balestrieri concerning the development of the IEEE standard (133 pages)
- If you want to compare prices for Germany: http://geizhals.at/de/192295
- If you want to buy it on Amazon.com: http://www.amazon.com/Behringer-UCA202-USB-Audio-Interface/dp/B000J0IIEQ
- lxoskope – Oscilloscope for Linux, using sound card as input device. Designed for use with Behringer USB Audio Interface UCA202.
- Read more on testing sound cards in my other post.
- Custom Hardware Project USB soundcard with TI's PCM2902
- NwAvGuy blog:
- A really nice ADC and DAC CODEC chip is the AKM AK4620B (built into the RME Fireface UC for example)