AT83SND2CMP3 datasheet(22/97 Pages) ATMEL

22 / 97 page

AT83SND2CMP3

7524B–MP3–05/06

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

Volume

Control

Volume

Control

Volume

Control

Volume

Control

SPKR

DRV

DAC

PGA

SPKR

DRV

HSR

HSL

LINEL

LINER

Serial to

Parallel

Interface

DSEL

DCLK

AUXN

AUXP

AUX

PADRV

MONON

MONOP

DOUT

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)

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