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2 ADC, 6 DAC,

96 kHz, 24-Bit - Codec

AD1839

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 - Modulators with

Perfect Differential Linearity Restoration for

Reduced Idle Tones and Noise Floor

Data Directed Scrambling DACs鈥擫east

Sensitive to Jitter

Single-Ended Output

ADCs: 鈥?5 dB THD + N, 105 dB SNR and

Dynamic Range

DACs: 鈥?2 dB THD + N, 108 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 f

S

, 512 f

S,

and 768 f

S

Master

Mode Clocks

Power-Down Mode Plus Soft Power-Down Mode

Flexible Serial Data Port with Right-Justified, Left-

Justified, I

2

S Compatible, and DSP Serial Port Modes

TDM Interface Mode Supports 8 In/8 Out Using a

Single SHARC

廬

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

PRODUCT OVERVIEW

The AD1839 is a high performance single-chip codec featuring

three stereo DACs and one stereo ADC. Each DAC comprises

a high performance digital interpolation filter, a multibit -

modulator featuring Analog Devices鈥?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

- modulators and decimation filters.

The AD1839 also contains an on-chip reference with a nominal

value of 2.25 V.

The AD1839 contains a flexible serial interface that allows

for glueless connection to a variety of DSP chips, AES/EBU

receivers, and sample rate converters. The AD1839 can be

configured in left-justified, right-justified, I

2

S, or DSP com-

patible serial modes. Control of the AD1839 is achieved by

means of an SPI

廬

compatible serial port. While the AD1839

can be operated from a single 5 V supply, it also features a

separate supply pin for its digital interface that allows the device

to be interfaced to other devices using 3.3 V power supplies.

The AD1839 is available in a 52-lead MQFP package and is

specified for the industrial temperature range of 鈥?0潞C to +85潞C.

FUNCTIONAL BLOCK DIAGRAM

DVDD DVDD ODVDD ALRCLK ABCLK ASDATA CCLK CLATCH CIN COUT

MCLK

PD/RST M/S

AVDD AVDD

AAUXDATA3

DLRCLK

DBCLK

DSDATA1

DSDATA2

DSDATA3

DAUXDATA

SERIAL DATA

I/O PORT

CONTROL PORT

VOLUME

VOLUME

VOLUME

VOLUME

VOLUME

CLOCK

OUTL1

DIGITAL

FILTER

-

DAC

OUTR1

OUTL2

DIGITAL

FILTER

-

DAC

OUTR2

OUTL3

DIGITAL

FILTER

-

DAC

OUTR3

ADCLP

ADCLN

-

ADC

DIGITAL

FILTER

VOLUME

ADCRP

ADCRN

-

ADC

DIGITAL

FILTER

FILTD

AD1839

V

REF

FILTR

REV. B

DGND DGND AGND AGND AGND AGND

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective companies.

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

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

漏 2003 Analog Devices, Inc. All rights reserved.

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