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AD1838AS Datasheet

  • AD1838AS

  • 2 ADC, 6 DAC,96 kHz, 24-Bit Codec

  • 24頁

  • AD

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a
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 Sigma-Delta Modulators with
鈥淧erfect Differential Linearity Restoration鈥?for
Reduced Idle Tones and Noise Floor
Data Directed Scrambling DACs鈥擫east
Sensitive to Jitter
Differential Output for Optimum Performance
ADCs: 鈥?5 dB THD + N, 105 dB SNR and
Dynamic Range
DACs: 鈥?5 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
2 ADC, 6 DAC,
96 kHz, 24-Bit - Codec
AD1838
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 AD1838 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 sigma-delta
modulator featuring Analog Devices鈥?patented technology,
(continued
on Page 11)
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
OUTLP1
OUTLN1
OUTRP1
OUTRN1
OUTLP2
OUTLN2
OUTRP2
OUTRN2
OUTLP3
OUTLN3
OUTRP3
OUTRN3
FILTD
FILTR
DIGITAL
FILTER
-
DAC
DIGITAL
FILTER
-
DAC
ADCLP
ADCLN
-
ADC
DIGITAL
FILTER
VOLUME
DIGITAL
FILTER
-
DAC
ADCRP
ADCRN
-
ADC
DIGITAL
FILTER
V
REF
AD1838
DGND DGND AGND AGND AGND AGND
SHARC is a registered trademark of Analog Devices, Inc.
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. 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
www.analog.com
Fax: 781/326-8703
漏 Analog Devices, Inc., 2002

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