PRODUCT OVERVIEW
The AD1838 is a high performance single-chip codec featuring three stereo DACs and one stereo ADC. Each DAC comprises a high performance digital interpolation filter, a multibit sigma-delta modulator featuring Analog Devices’ patented technology, and a continuous-time voltage out analog section. Each DAC has independent volume control and clickless mute functions. The ADC comprises two 24-bit conversion channels with multibit sigma-delta modulators and decimation filters.

FEATURES
    5 V Stereo Audio System with 3.3 V Tolerant
    Digital Interface
    Supports up to 96 kHz Sample Rates
    192 kHz Sample Rate Available on One DAC
    Supports 16-/20-/24-Bit Word Lengths
    Multibit Sigma-Delta Modulators with
        “Perfect Differential Linearity Restoration” for
        Reduced Idle Tones and Noise Floor
    Data Directed Scrambling DACs—Least
        Sensitive to Jitter
    Differential Output for Optimum Performance
        ADCs: –95 dB THD + N, 105 dB SNR and
        Dynamic Range
        DACs: –95 dB THD + N, 108 dB SNR and
        Dynamic Range
    On-Chip Volume Controls per Channel with
        1024 Step Linear Scale
    DAC and ADC Software Controllable Clickless Mutes
    Digital De-Emphasis Processing
    Supports 256 x fS, 512 x fS, and 768 x fS Master
        Mode Clocks
    Power-Down Mode Plus Soft Power-Down Mode
    Flexible Serial Data Port with Right-Justified, Left
        Justified, I2S-Compatible, and DSP Serial Port Modes
    TDM Interface Mode Supports 8 In/8 Out Using a
        Single SHARC® SPORT
    52-Lead MQFP Plastic Package

APPLICATIONS
    DVD Video and Audio Players
    Home Theater Systems
    Automotive Audio Systems
    Audio/Visual Receivers
    Digital Audio Effects Processors