
Analog Devices
PRODUCT OVERVIEW
The AD1835 is a high-performance, single-chip codec featuring four 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: –92 dB THD + N, 100 dB SNR,
and Dynamic Range
DACs: –95 dB THD + N, 110 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