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7.5 Audio & I/O Interfaces
Speaker Interface
Parameter
Connector type
Audio output*
* For details see following sections.
Audio Processor (Codec)
VLSI VS1053B Decoding features:
Format
PCM 16bit linear
PCM 8bit logarithmic
(µLaw / aLaw)
MPEG1 & MPEG2
Layer 3 (MP3)
HE-AAC v2, SBR +
PS (AAC+)
Ogg Vorbis
Speaker output and D/A Conversion
Speaker (8 Ohm) output audio path and D/A conversion (Micronas MAS3587F) typical values:
Parameter
Full Scale Output Voltage (Peak-to-peak) 8 Ohm load*
Max output power on 8 Ohm speaker
Frequency response (-3dB) @ 48 kHz sample rate PCM
Frequency response with treble +2 (+0.5dB @ 5 kHz)
Frequency response with treble +3 (+1.4dB @ 7 kHz)
Output signal-to-noise ratio (SNR)
Dynamic Range
Total Harmonic Distortion (THD @ -3dBFS = 2.8W)
Total Harmonic Distortion (THD @ -0.4dBFS = 5W)
Speaker (16 Ohm) output audio path and D/A conversion (Micronas MAS3587F) typical values:
Parameter
Full Scale Output Voltage (Peak-to-peak) 16 Ohm load*
Max output power on 16 Ohm speaker
Frequency response (-3dB) @ 48 kHz sample rate PCM
Output signal-to-noise ratio (SNR)
Dynamic Range
Total Harmonic Distortion (THD @ -3dBFS = 1.5W)
Total Harmonic Distortion (THD @ -0.4dBFS = 2.72W)
*Output level software controllable
Built-in Parts
Parameter
Green Status LED Current (max.)
Red Status LED Current (max.)
Details
Weidmuller 2 pin male terminal
Speaker output 8 Ohm 5 Watt
Sampling rate / Bit rate & type
8, 16, 22.05, 24, 32, 44.1, 48 kHz
8, 16, 22.05, 24, 32, 44.1, 48 kHz
8 to 48 kHz / 32..320 kbps, constant bitrate (CBR) and
variable bit rate (VBR)
8 to 48 kHz / up to 576 kbps, with or without Spectral Band
Replication (SBR), with or without Parametric Stereo (PS)
48 kHz / 500 kbps
Value
Unit
18.86
V
PP
6.67
V
RMS
5.56
W
RMS
20..11'600
Hz
20..13'000
Hz
20..15'000
Hz
-90
dB
90
dB
0.665
%
1.96
%
Value
Unit
19.53
V
PP
6.9
V
RMS
3.0
W
RMS
25..20'000
Hz
-76.5
dB
76.5
dB
0.296
%
0.296
%
Value
Unit
6
mA
7
mA
BARIX AG | 23/26
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