AD1859 Datasheet | Analog Devices

a Features plete, Low Cost Stereo DAC System in a Single Die Package Variable Rate Oversampling Interpolation Filter Multibit ⌺⌬ Modulator with Triangular PDF Dither Discrete and Continuous Time Analog Reconstruction Filters Extremely Low Out-of-Band Energy 64 Step (1 d B/Step) Analog Attenuator with Mute Buffered Outputs with 2 k⍀ Output Load Drive Rejects Sample Clock Jitter 94 d B Dynamic Range, - 88 d B THD+N Performance Option for Analog De-emphasis Processing with External Passive ponents ؎0.1؇ Maximum Phase Linearity Deviation Continuously Variable Sample Rate Support Digital Phase Locked Loop Based Asynchronous Master Clock On-Chip Master Clock Oscillator, Only External Crystal Is Required Power-Down Mode Flexible Serial Data Port (I2S-Justified, Left-Justified, Right-Justified and DSP Serial Port Modes) SPI- patible Serial Control Port Single +5 V Supply 28-Pin SOIC and SSOP Packages APPLICATIONS Digital Cable TV and Direct Broadcast Satellite Set-Top Decoder Boxes Digital Video Disc, Video CD and CD-I Players High Definition Televisions, Digital Audio Broadcast Receivers CD, CD-R, DAT, DCC, ATAPI CD-ROM and MD Players Digital Audio Workstations, puter Multimedia Products Stereo, Single-Supply 18-Bit Integrated ⌺⌬ DAC AD1859 PRODUCT OVERVIEW The AD1859 is a plete 16-/18-bit single-chip stereo digital audio playback subsystem. It prises a variable rate digital interpolation filter, a revolutionary multibit sigma-delta (∑∆) modulator with dither, a jitter-tolerant DAC, switched capacitor and continuous time analog filters, and analog output drive circuitry. Other Features include an on-chip stereo attenuator and mute, programmed through an SPI-patible serial control port. The key differentiating feature of the AD1859 is its asynchronous master clock capability. Previous ∑∆ audio DACs required a high frequency master clock at 256 or 384 times the intended audio sample rate. The generation and management of this high frequency synchronous...