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AD1837A Arkusz danych(PDF) 1 Page - Analog Devices

Numer części AD1837A
Szczegółowy opis  2 ADC, 8 DAC, 96 kHz, 24-Bit Codec
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
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AD1837A Arkusz danych(HTML) 1 Page - Analog Devices

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AD1837A
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. 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
© 2004 Analog Devices, Inc. All rights reserved.
REV. A
2 ADC, 8 DAC,
96 kHz, 24-Bit - Codec
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 1 DAC
Supports 16-, 20-, 24-Bit Word Lengths
Multibit
-
Modulators with
Perfect Differential Linearity Restoration for
Reduced Idle Tones and Noise Floor
Data Directed Scrambling DACs—Least
Sensitive to Jitter
Single-Ended Outputs
ADCs: –95 dB THD + N, 105 dB SNR and
Dynamic Range
DACs: –92 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
Supports 256
fS, 512
fS, and 768
fS Master
Mode Clocks
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 Plastic Package
APPLICATIONS
DVD Video and Audio Players
Home Theater Systems
Automotive Audio Systems
Audio/Visual Receivers
Digital Audio Effects Processors
FUNCTIONAL BLOCK DIAGRAM
OUTL1
CONTROL PORT
CLOCK
FILTD
FILTR
ADCLP
ADCLN
ADCRP
ADCRN
DLRCLK
DBCLK
DSDATA1
DSDATA2
DSDATA3
DSDATA4
MCLK
ASDATA
ABCLK
ALRCLK
ODVDD
DVDD
AVDD
AVDD
DVDD
AGND
AGND
AGND
AGND
DGND
DGND
CIN
CLATCH
CCLK
COUT
DIGITAL
FILTER
PD/RST M/S
-
ADC
VOLUME
SERIAL DATA
I/O PORT
DIGITAL
FILTER
-
DAC
VREF
OUTR1
VOLUME
OUTL2
VOLUME
DIGITAL
FILTER
-
DAC
OUTR2
VOLUME
OUTL3
VOLUME
DIGITAL
FILTER
-
DAC
OUTR3
VOLUME
OUTL4
VOLUME
DIGITAL
FILTER
-
DAC
OUTR4
VOLUME
DIGITAL
FILTER
-
ADC
AD1837A
GENERAL DESCRIPTION
The AD1837A is a high performance single-chip codec featuring
four stereo DACs and one stereo ADC. Each DAC comprises a
high performance digital interpolation filter, a multibit
-
modulator featuring Analog Devices’ patented technology, and a
continuous-time voltage out analog section. Each DAC has inde-
pendent volume control and clickless mute functions. The ADC
comprises two 24-bit conversion channels with multibit
S-D
modulators and decimation filters.
The AD1837A also contains an on-chip reference with a nominal
value of 2.25 V.
The AD1837A contains a flexible serial interface that allows for
glueless connection to a variety of DSP chips, AES/EBU receivers,
and sample rate converters. The AD1837A can be configured in
left-justified, right-justified, I
2S, or DSP compatible serial modes.
Control of the AD1837A is achieved by means of an SPI compat-
ible serial port. While the AD1837A can be operated from a single
5 V supply, it also features a separate supply pin for its digital inter-
face, which allows the device to be interfaced to other devices using
3.3 V power supplies.
The AD1837A is available in a 52-lead MQFP package and is speci-
fied for the industrial temperature range of –40ºC to +85ºC.


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