Technology AV2636 AVS

24-bit 192kHz Stereo Audio DAC

DESCRIPTION
The AV2636 is a high performance, low power
stereo audio digital to analog converter (DAC). It
is designed for high performance audio
applications such as CD player, DVD player,
home theater systems, digital TVs and set top
boxes. Based on the state of the art multi-bit
∆−Σ modulator, it also includes the digital
interpolation filters, digital volume control, digital
de-emphasis and analog low pass filters. It has
no linearity drift due to time and temperature. It
also has high tolerance to clock jitter.

The device has a serial audio interface that
accepts 16/18/20/24 digital data in I
2
S, Right-
justified or DSP mode. It can work at auto-detect
mode or programmable mode with a two-wire
serial command interface. Audio sample rates
from 8kHz to 192kHz are supported.



FEATURES

• SNR: 102 dB
• THD+N: -90 dB
• Input Sample rate: 8kHz – 192kHz
• Input data resolution: 16/18/20/24 bits
• Digital De-Emphasis for 32k/44.1k/48kHz
• Digital Volume Control
• Mute Control
• Single Power Supply 2.2V – 3.6V
• Low Clock Jitter Sensitivity
• Small 14-pin SOIC Package


APPLICATIONS

• DVD/CD Player
• Home Theatre Systems
• Digital TV and Set-Top Boxes
• Electronic Music Instrument



CHIP BLOCK DIAGRAM


SERIAL
AUDIO
INTERFACE

INTERPOLATION
DIGITAL
FILTERS

MULTI-LEVEL
∆−Σ
MODULATOR
DAC
DAC
LOW PASS
FILTER
LOW PASS
FILTER
CONTROL INTERFACE
FMTC FMTD MUTE
SC
SF
SD
AOUTL
AOUTR
MCK
VDD VCM GND
MODE
AVS Technology, Inc. 1-16 August 18, 2004
www.avstech.com