
Analog Devices
GENERAL DESCRIPTION
The AD1836 is a high-performance, single-chip codec providing three stereo DACs and two stereo ADCs using ADI’s patented multibit sigma-delta architecture. An SPI port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1836 operates from a 5 V supply, with provision for a separate output supply to interface with low-voltage external circuitry. The AD1836 is available in a 52-lead MQFP (PQFP) package.
FEATURES
5 V Multichannel Audio System
Accepts 16-/18-/20-/24-Bit Data
Supports 24 Bits and 96 kHz Sample Rate
Multibit Sigma-Delta Modulators with Data Directed
Scrambling
Data-Directed Scrambling ADCs and DACs—Least
Sensitive to Jitter
Differential Output for Optimum Performance
ADCs: –92 dB THD + N, 105 dB SNR and Dynamic Range
DACs: –95 dB THD + N, 108 dB SNR and Dynamic Range
On-Chip Volume Control with “Autoramp” Function
Programmable Gain Amplifier for ADC Input
Hardware and Software Controllable Clickless Mute
Digital De-Emphasis Processing
Supports 256 x fS, 512 x fS, or 768 x fS Master Clock
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 (PQFP) Plastic Package
APPLICATIONS
Home Theatre Systems
Automotive Audio Systems
DVD
Set-Top Boxes
Digital Audio Effects Processors