PRELIMINARY TECHNICAL DATA

REV. PrC

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a

Preliminary Technical Data

AD1836

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

World Wide Web Site: www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2001

Multichannel 96 kHz Codec

FUNCTIONAL BLOCK DIAGRAM

VOLUME

VOLUME

DIGITAL

FILTER

DAC

CLOCK

MCLK

COUT

FILTD

CONTROL PORT

CCLK

CDATA CLATCH

SERIAL

DATA

I/O

PORT

DIGITAL

FILTER

48/96kHz

ADC1L

48/96kHz

DIGITAL

FILTER

48/96kHz

ADC1R

48/96kHz

PGA

ADC2L

48kHz

DIGITAL

FILTER

48kHz

DLRCLK

DBCLK

DSDATA1

DSDATA2

DSDATA3

ALRCLK

ABCLK

ASDATA1

ASDATA2

CAPL1

CAPL2

CAPR1

CAPR2

PWRDWN/RESET

AVDD

AGND

DVDD

DGND

2

432

PGA

ADC2R

48kHz

DIGITAL

FILTER

48kHz

VOLUME

VOLUME

DIGITAL

FILTER

DAC

VOLUME

VOLUME

DIGITAL

FILTER

DAC

FILTR

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

Power-Down Mode Plus Soft Power-Down Mode

Flexible Serial Data Port with Right-Justified, Left-

TDM Interface Mode Supports 8 In/8 Out Using a

52-Lead MQFP (PQFP) Plastic Package

GENERAL DESCRIPTION

The AD1836 is a high-performance, single-chip codec pro-

viding 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.

APPLICATIONS

Home Theatre Systems

Automotive Audio Systems

DVD

Set-Top Boxes

Digital Audio Effects Processors

SHARC is a registered trademark of Analog Device, Inc.