AD1836 Datasheet, PDF (1/18 Pages) Analog Devices – Multichannel 96 kHz Codec

PRELIMINARY TECHNICAL DATA
a
Multichannel 96 kHz Codec
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—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 ؋ 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, 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
AD1836
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.
FUNCTIONAL BLOCK DIAGRAM
CCLK CDATA CLATCH COUT
MCLK
DLRCLK
DBCLK
DSDATA1
DSDATA2
DSDATA3
ALRCLK
ABCLK
ASDATA1
ASDATA2
A_IN1L
A_IN1R
CAPL1
A_IN2L1
A_IN2L2
CAPL2
CAPR1
A_IN2R1
A_IN2R2
CAPR2
SERIAL
DATA
I/O
PORT
CONTROL PORT
CLOCK
VOLUME
VOLUME
DIGITAL
FILTER
⌺⌬
DAC
⌺⌬
ADC1L
48/96kHz
⌺⌬
ADC1R
48/96kHz
DIGITAL
FILTER
48/96kHz
DIGITAL
FILTER
48/96kHz
PGA
⌺⌬
ADC2L
48kHz
DIGITAL
FILTER
48kHz
VOLUME
VOLUME
DIGITAL
FILTER
VOLUME
VOLUME
DIGITAL
FILTER
⌺⌬
DAC
⌺⌬
DAC
PGA
⌺⌬
ADC2R
48kHz
DIGITAL
FILTER
48kHz
2
PWRDWN/RESET AVDD
4
AGND
3
DVDD
V_REF
2
DGND
A_OUT1
A_OUT2
A_OUT3
A_OUT4
A_OUT5
A_OUT6
FILTD
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: [phone]
World Wide Web Site: www.analog.com
Fax: [phone]
© Analog Devices, Inc., 2001