USB-2020 Hardware User’s Guide
Ver. 1.0
USB Audio Device with HID
Last Modified 06/20/2009
USB-2020 Specification
Audio Output 3.5mm stereo phone jack
Output Channels
Mono, Stereo(L + R)
Resolution
8-bit, 16-bit
Sampling Frequency
32, 44.1, 48 kHz
THD+N
< 0.02% (0 dB), < 3% (-60dB)
SNR
> 87 dB
Output Voltage
3 Vrms
Output Current
30mA
Audio Input 3.5mm stereo phone jack
Input Channels
Mono, Stereo(L + R)
Resolution
8 bits, 16 bits
Sampling Frequency
8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
THD+N
<0.1% (0 dB)
SNR
> 80 dB
Input Voltage
1.4 Vrms
Input Impedance
10k Ohm
Condenser Microphone Bias Yes
USB 1.1, 12MHz full-speed, fully compliant with USB 2.0 specification
HID volume up, volume down and mute buttons
External power input voltage 10 ~ 30 V DC
Power consumption 1.8W max.
Auto switching USB/External power
