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