Multichannel 96 kHz Codec
AD1836A
FEATURES
5 V multichannel audio system
Accepts 16-/18-/20-/24-bit data
Supports 24-bit and 96 kHz sample rate
Multibit 危-鈭?modulators with data directed
scrambling
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 "auto-ramp" function
Programmable gain amplifier for ADC input
Hardware and software controllable clickless mute
Digital de-emphasis processing
Supports 256 脳 f
S
, 512 脳 f
S
, or 768 脳 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
APPLICATIONS
Home theater systems
Automotive audio systems
DVD recorders
Set-top boxes
Digital audio effects processors
PRODUCT OVERVIEW
The AD1836A is a high performance, single-chip codec that
provides three stereo DACs and two stereo ADCs using ADI鈥檚
patented multibit 危-鈭?architecture. An SPI廬 port is included,
allowing a microcontroller to adjust volume and many other
parameters. The AD1836A operates from a 5 V supply, with
provision for a separate output supply to interface with low
voltage external circuitry. The AD1836A 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
ADC1L
CONTROL PORT
SERIAL
DATA
I/O
PORT
CLOCK
VOLUME
VOLUME
DIGITAL
FILTER
危-鈭?/div>
DAC
DAC1L
DAC1R
危-鈭?/div>
ADC1L
48kHz/96kHz
危-鈭?/div>
ADC1R
48kHz/96kHz
DIGITAL
FILTER
48kHz/96kHz
DIGITAL
FILTER
48kHz/96kHz
危-鈭?/div>
ADC2L
48kHz
DIGITAL
FILTER
48kHz
VOLUME
VOLUME
DIGITAL
FILTER
危-鈭?/div>
DAC
DAC2L
DAC2R
ADC1R
CAPL1
MUX
VOLUME
VOLUME
ADC2L1
ADC2L2
CAPL2
CAPR1
DIGITAL
FILTER
危-鈭?/div>
DAC
DAC3L
DAC3R
FILTD
PGA
MUX
ADC2R1
ADC2R2
CAPR2
PGA
危-鈭?/div>
ADC2R
48kHz
DIGITAL
FILTER
48kHz
2
PD/RST
AVDD
4
AGND
3
DVDD
V
REF
2
DGND
FILTR
Figure 1.
Rev. 0
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.
Specifications subject to change without notice. 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 owners.
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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