PRODUCT OVERVIEW
The AD1895 is a 24-bit, high-performance, single-chip, secondgeneration asynchronous sample rate converter. Based upon Analog Devices, Inc. experience with its first asynchronous sample rate converter, the AD1890, the AD1895 offers improved performance and additional features. This improved performance includes a THD + N range of –115 dB to –122 dB depending on sample rate and input frequency, 128 dB (A-Weighted) dynamic range, 192 kHz sampling frequencies for both input and output sample rates, improved jitter rejection, and 1:8 upsampling and 7.75:1 downsampling ratios. Additional features include more serial formats, a bypass mode, and better interfacing to digital signal processors.

FEATURES
    Automatically Senses Sample Frequencies
    No Programming Required
    Attenuates Sample Clock Jitter
    3.3 V–5 V Input and 3.3 V Core Supply Voltages
    Accepts 16-/18-/20-/24-Bit Data
    Up to 192 kHz Sample Rate
    Input/Output Sample Ratios from 7.75:1 to 1:8
    Bypass Mode
    Multiple AD1895 TDM Daisy-Chain Mode
    128 dB Signal-to-Noise and Dynamic Range
        (A-Weighted, 20 Hz–20 kHz BW)
    Up to –122 dB THD + N
    Linear Phase FIR Filter
    Hardware Controllable Soft Mute
    Supports 256 x fS, 512 x fS or 768 x fS Master Mode
        Clock
    Flexible Three-Wire Serial Data Port with Left-Justified,
        I2S, Right-Justified (16-, 18-, 20-, 24-Bits), and TDM
        Serial Port Modes
    Master/Slave Input and Output Modes
    28-Lead SSOP Plastic Package

APPLICATIONS
    Home Theater Systems, Automotive Audio Systems, DVD, DVD-R, CD-R, Set-Top Boxes, Digital Audio Effects Processors