PRELIMINARY TECHNICAL DATA
a
Preliminary Technical Data
Multichannel 96 kHz Codec
AD1836
FEATURES
APPLICATIONS
5 V Multichannel Audio System
Accepts 16-/18-/20-/24-Bit Data
Home Theatre Systems
Automotive Audio Systems
DVD
Set-Top Boxes
Digital Audio Effects Processors
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 ꢂ fS, 512 ꢂ fS, or 768 ꢂ 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
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.
52-Lead MQFP (PQFP) Plastic Package
FUNCTIONAL BLOCK DIAGRAM
CCLK CDATA CLATCH COUT
MCLK
DLRCLK
DBCLK
CLOCK
CONTROL PORT
DSDATA1
DSDATA2
DSDATA3
SERIAL
DATA
I/O
A
A
1
VOLUME
VOLUME
OUT
PORT
DIGITAL
FILTER
ꢀꢁ
DAC
ALRCLK
ABCLK
ASDATA1
ASDATA2
2
OUT
A
A
3
VOLUME
VOLUME
ꢀꢁ
ADC1L
48/96kHz
DIGITAL
FILTER
48/96kHz
OUT
DIGITAL
FILTER
ꢀꢁ
DAC
A
1L
IN
4
OUT
ꢀꢁ
ADC1R
48/96kHz
DIGITAL
FILTER
48/96kHz
A
1R
IN
A
A
5
VOLUME
OUT
DIGITAL
FILTER
ꢀꢁ
DAC
CAPL1
6
VOLUME
DIGITAL
ꢀꢁ
ADC2L
48kHz
A 2L1
IN
OUT
FILTER
48kHz
PGA
PGA
A
2L2
IN
FILTD
CAPL2
CAPR1
ꢀꢁ
ADC2R
48kHz
DIGITAL
FILTER
48kHz
A 2R1
IN
V
FILTR
REF
A
2R2
IN
CAPR2
2
4
3
2
PWRDWN/RESET AVDD
AGND
DVDD
DGND
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
Fax: 781/326-8703
World Wide Web Site: www.analog.com
© Analog Devices, Inc., 2001