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Analog Devices Semiconductor Electronic Components Datasheet

AD1835 Datasheet

2 ADC/ 8 DAC/ 96 kHz/ 24-Bit Codec

No Preview Available !

AD1835 pdf
PRELIMINARY TECHNICAL DATA
a
2 ADC, 8 DAC,
96 kHz, 24-Bit -Codec
Preliminary Technical Data
AD1835
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
“Perfect Differential Linearity Restoration” for
Reduced Idle Tones and Noise Floor
Data Directed Scrambling DACs—Least
Sensitive to Jitter
Differential Output for Optimum Performance
ADCs: –92 dB THD + N, 100 dB SNR,
and Dynamic Range
DACs: –95 dB THD + N, 110 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 SHARCSPORT
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 AD1835 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 sigma-
delta modulator featuring Analog Devices’ 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
DLRCLK
DBCLK
DSDATA1
DSDATA2
DSDATA3
DSDATA4
ADCLP
ADCLN
ADCRP
ADCRN
-
ADC
-
ADC
SERIAL DATA
I/O PORT
DIGITAL
FILTER
DIGITAL
FILTER
CONTROL PORT
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
CLOCK
DIGITAL
FILTER
DIGITAL
FILTER
DIGITAL
FILTER
DIGITAL
FILTER
DGND DGND AGND AGND AGND AGND
-
DAC
-
DAC
-
DAC
-
DAC
VREF
OUTLP1
OUTLN1
OUTRP1
OUTRN1
OUTLP2
OUTLN2
OUTRP2
OUTRN2
OUTLP3
OUTLN3
OUTRP3
OUTRN3
OUTLP4
OUTLN4
OUTRP4
OUTRN4
FILTD
FILTR
SHARC is a registered trademark of Analog Devices, Inc.
REV. PrA
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
© Analog Devices, Inc., 2002


Analog Devices Semiconductor Electronic Components Datasheet

AD1835 Datasheet

2 ADC/ 8 DAC/ 96 kHz/ 24-Bit Codec

No Preview Available !

AD1835 pdf
PRELIMINARY TECHNICAL DATA
AD1835–SPECIFICATIONS
TEST CONDITIONS
Supply Voltages (AVDD, DVDD) . . . . . . . . . . . . . . . . . . . . . . . . 5.0 V
Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25°C
Input Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.288 MHz, (256 ϫ fS Mode)
ADC Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0078125 kHz, –1 dBFS (Full Scale)
DAC Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0078125 kHz, 0 dBFS (Full Scale)
Input Sample Rate (fS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 kHz
Measurement Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Hz to 20 kHz
Word Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Bits
Load Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 pF
Load Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 k
Performance of all channels is identical (exclusive of the Interchannel Gain Mismatch and Interchannel Phase Deviation
specifications).
Parameter
Min Typ Max Unit
ANALOG-TO-DIGITAL CONVERTERS
ADC Resolution
Dynamic Range (20 Hz to 20 kHz, –60 dB Input)
No Filter
A-Weighted
Total Harmonic Distortion + Noise (THD + N)
Interchannel Isolation
Interchannel Gain Mismatch
Analog Inputs
Differential Input Range (± Full Scale)
Common-Mode Input Volts
Input Impedance
Input Capacitance
VREF
DC Accuracy
Gain Error
Gain Drift
Crosstalk (EIAJ Method)
100
101
–2.828
24
103
105
–93
100
0.01
2.25
4
15
2.25
+5
TBD
TBD
–88.5
+2.828
Bits
dB
dB
dB
dB
dB
V
V
k
pF
V
%
ppm/ºC
dB
DIGITAL-TO-ANALOG CONVERTERS
DAC Resolution
Dynamic Range (20 Hz to 20 kHz, –60 dBFS Input)
No Filter
With A-Weighted Filter
Total Harmonic Distortion + Noise
Interchannel Isolation
DC Accuracy
Gain Error
Interchannel Gain Mismatch
Gain Drift
Interchannel Crosstalk (EIAJ method)
Interchannel Phase Deviation
Volume Control Step Size (1023 Linear Steps)
Volume Control Range (Max Attenuation)
Mute Attenuation
De-Emphasis Gain Error
Full-Scale Output Voltage at Each Pin (Single-Ended)
Output Resistance at Each Pin
Common-Mode Output Volts
103
105
105
108
–95
100
± 4.0
0.01
150
–120
± 0.1
0.098
60
–100
± 0.1
1.0 (2.8)
115
2.25
–90
dB
dB
dB
%
%
ppm/°C
dB
Degrees
%
dB
dB
dB
Vrms (V p-p)
V
ADC DECIMATION FILTER, 48 kHz*
Pass Band
Pass-Band Ripple
Stop Band
Stop-Band Attenuation
Group Delay
20
± 0.01
24
120
910
kHz
dB
kHz
dB
µs
–2– REV. PrA


Part Number AD1835
Description 2 ADC/ 8 DAC/ 96 kHz/ 24-Bit Codec
Maker Analog Devices
Total Page 23 Pages
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