PRELIMINARY TECHNICAL DATA
a
Preliminary Technical Data
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鈥擫east
Sensitive to Jitter
Differential Output for Optimum Performance
ADCs: 鈥?2 dB THD + N, 105 dB SNR and Dynamic Range
DACs: 鈥?5 dB THD + N, 108 dB SNR and Dynamic Range
On-Chip Volume Control with 鈥淎utoramp鈥?Function
Programmable Gain Amplifier for ADC Input
Hardware and Software Controllable Clickless Mute
Digital De-Emphasis Processing
Supports 256 f
S
, 512 f
S,
or 768 f
S
Master Clock
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 (PQFP) Plastic Package
Multichannel 96 kHz Codec
AD1836
APPLICATIONS
Home Theatre Systems
Automotive Audio Systems
DVD
Set-Top Boxes
Digital Audio Effects Processors
GENERAL DESCRIPTION
The AD1836 is a high-performance, single-chip codec pro-
viding three stereo DACs and two stereo ADCs using ADI鈥檚
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.
FUNCTIONAL BLOCK DIAGRAM
CCLK
CDATA CLATCH COUT
MCLK
DLRCLK
DBCLK
DSDATA1
DSDATA2
DSDATA3
ALRCLK
ABCLK
ASDATA1
ASDATA2
A
IN
1L
CONTROL PORT
SERIAL
DATA
I/O
PORT
CLOCK
VOLUME
VOLUME
DIGITAL
FILTER
A
OUT
1
DAC
A
OUT
2
ADC1L
48/96kHz
ADC1R
48/96kHz
DIGITAL
FILTER
48/96kHz
DIGITAL
FILTER
48/96kHz
DIGITAL
FILTER
48kHz
VOLUME
VOLUME
DIGITAL
FILTER
A
OUT
3
DAC
A
OUT
4
A
IN
1R
CAPL1
MUX
VOLUME
VOLUME
DIGITAL
FILTER
A
OUT
5
DAC
A
OUT
6
FILTD
A
IN
2L1
A
IN
2L2
CAPL2
CAPR1
PGA
ADC2L
48kHz
MUX
A
IN
2R1
A
IN
2R2
CAPR2
PGA
ADC2R
48kHz
DIGITAL
FILTER
48kHz
2
PWRDWN/RESET
AVDD
4
AGND
3
DVDD
V
REF
2
DGND
FILTR
SHARC is a registered trademark of Analog Device, Inc.
REV. PrC
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
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
漏 Analog Devices, Inc., 2001