Specifications

22
AT83SND2CMP3
7524D–MP3–07/07
DAC Features • 20 bit D/A Conversion
• 72dB Dynamic Range, -75dB THD Stereo line-in or microphone interface with 20dB
amplification
• 93dB Dynamic Range, -80dB THD Stereo D/A conversion
• 74dB Dynamic Range / -65dB THD for 20mW output power over 32 Ohm loads
• Stereo, Mono and Reverse Stereo Mixer
• Left/Right speaker short-circuit detection flag
• Differential mono auxiliary input amplifier and PA driver
• Audio sampling rates (Fs): 16, 22.05, 24, 32, 44.1 and 48 kHz.
Figure 20. Stereo DAC functional diagram
Digital Signals Timing
Data Interface To avoid noises at the output, the reset state is maintained until proper synchronism is
achieved in the DAC serial interface:
• DSEL
• SCLK
• DCLK
• DOUT
The data interface allows three different data transfer modes:
Digital Filter
Digital Filter
Volume
Control
Volume
Control
Volume
Control
Volume
Control
SPKR
DRV
32
DAC
DAC
PGA
PGA
SPKR
DRV
32
HSR
HSRHSR
HSR
HSL
HSLHSL
HSL
LINEL
LINELLINEL
LINEL
LINER
LINERLINER
LINER
Serial to
Parallel
Interface
DSEL
DSELDSEL
DSEL
DCLK
DCLKDCLK
DCLK
+
++
+
+
++
+
AUXN
AUXNAUXN
AUXN
AUXP
AUXPAUXP
AUXP
AUX
PADRV
MONON
MONONMONON
MONON
MONOP
MONOPMONOP
MONOP
+
++
+
+
++
+
+
++
+
DOUT
DOUTDOUT
DOUT
SCLK
SCLKSCLK
SCLK
DAC_OLC Gain
6 to -6dB (3dB)
LLIG,RLIG Gain
20,12 to -33 dB
(3dB)
AUXG Gain
PA Gain
Line Out Gain
LLOG, RLOG
0 to -46.5dB
(1.5dB)
Master Playback
Gain
12 to -34dB (1.5dB)