AD1835AASZ Analog Devices Inc, AD1835AASZ Datasheet

Audio Codec 2ADC / 8DAC 24-Bit 52-Pin MQFP

AD1835AASZ

Manufacturer Part Number
AD1835AASZ
Description
Audio Codec 2ADC / 8DAC 24-Bit 52-Pin MQFP
Manufacturer
Analog Devices Inc
Type
General Purposer
Datasheet

Specifications of AD1835AASZ

Package
52MQFP
Adc/dac Resolution
24 Bit
Number Of Channels
2ADC /8 DAC
Sampling Rate
96 KSPS
Number Of Adcs
2
Number Of Dacs
8
Operating Supply Voltage
3.3|5 V
Data Interface
Serial
Resolution (bits)
24 b
Number Of Adcs / Dacs
2 / 8
Sigma Delta
Yes
S/n Ratio, Adcs / Dacs (db) Typ
105 / 108
Dynamic Range, Adcs / Dacs (db) Typ
105 / 108
Voltage - Supply, Analog
4.5 V ~ 5.5 V
Voltage - Supply, Digital
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
52-BQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
EVAL-AD1835AEB - BOARD EVALUATION FOR AD1835A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD1835AASZ
Manufacturer:
ADI
Quantity:
30
Part Number:
AD1835AASZ
Manufacturer:
Analog Devices Inc
Quantity:
10 000
Part Number:
AD1835AASZ-REEL
Manufacturer:
Analog Devices Inc
Quantity:
10 000
REV. A
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.
FEATURES
5 V Stereo Audio System with 3.3 V Tolerant Digital
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
Data Directed Scrambling DACs—Least
Differential Output for Optimum Performance
On-Chip Volume Controls per Channel with
DAC and ADC Software Controllable Clickless Mutes
Digital De-emphasis Processing
Interface
Perfect Differential Linearity Restoration for
Reduced Idle Tones and Noise Floor
Sensitive to Jitter
ADCs: –95 dB THD + N, 105 dB SNR, and
DACs: –95 dB THD + N, 108 dB SNR, and
1024-Step Linear Scale
Dynamic Range
Dynamic Range
DSDATA1
DSDATA2
DSDATA3
DSDATA4
DLRCLK
ADCRN
DBCLK
ADCRP
ADCLP
ADCLN
DVDD
AD1835A
DVDD
ADC
ADC
-
-
ODVDD
ALRCLK
DIGITAL
DIGITAL
FILTER
FILTER
FUNCTIONAL BLOCK DIAGRAM
SERIAL DATA
I/O PORT
DGND
ABCLK
DGND
ASDATA
AGND
CCLK
CONTROL PORT
CLATCH
AGND
PRODUCT OVERVIEW
The AD1835A is a high performance, single-chip codec fea-
turing 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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
Supports 256
Power-Down Mode Plus Soft Power-Down Mode
Flexible Serial Data Port with Right-Justified, Left-
TDM Interface Mode Supports 8-In/8-Out Using a
Single SHARC
52-Lead MQFP Plastic Package
APPLICATIONS
DVD Video and Audio Players
Home Theater Systems
Automotive Audio Systems
Audio/Visual Receivers
Digital Audio Effects Processors
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
AGND AGND
Mode Clocks
Justified, I
CIN
96 kHz, 24-Bit - Codecs
COUT
CLOCK
2
MCLK
DIGITAL
DIGITAL
DIGITAL
DIGITAL
FILTER
FILTER
FILTER
FILTER
S Compatible, and DSP Serial Port Modes
®
SPORT
© 2003 Analog Devices, Inc. All rights reserved.
f
S
PD/RST M/S
, 512
V
DAC
DAC
DAC
DAC
REF
f
-
-
-
-
AVDD
S
, and 768
AVDD
2 ADC, 8 DAC,
AD1835A
OUTLP1
OUTLN1
OUTRP1
OUTRN1
OUTLP2
OUTLN2
OUTRP2
OUTRN2
OUTLP3
OUTLN3
OUTRP3
OUTRN3
OUTLP4
OUTLN4
OUTRP4
OUTRN4
FILTD
FILTR
(continued on page 11)
f
S
www.analog.com
Master

Related parts for AD1835AASZ

AD1835AASZ Summary of contents

Page 1

FEATURES 5 V Stereo Audio System with 3.3 V Tolerant Digital Interface Supports 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 ...

Page 2

AD1835A–SPECIFICATIONS TEST CONDITIONS Supply Voltages (AVDD, DVDD) 5.0 V Ambient Temperature 25°C Input Clock 12.288 MHz (256 ADC Input Signal 1.0078125 kHz, –1 dBFS (Full Scale) DAC Input Signal 1.0078125 kHz, 0 dBFS (Full Scale) Input Sample Rate (f ) ...

Page 3

Parameter ADC DECIMATION FILTER, 96 kHz* Pass Band Pass-Band Ripple Stop Band Stop-Band Attenuation Group Delay DAC INTERPOLATION FILTER, 48 kHz* Pass Band Pass-Band Ripple Stop Band Stop-Band Attenuation Group Delay DAC INTERPOLATION FILTER, 96 kHz* Pass Band Pass-Band Ripple ...

Page 4

AD1835A TIMING SPECIFICATIONS Parameter MASTER CLOCK AND RESET t MCLK High MH t MCLK Low ML PD/RST Low t PDR ® SPI PORT t CCLK High CCH t CCLK Low CCL t CCLK Period CCP t CDATA Setup CDS t ...

Page 5

Parameter TDM256 MODE (Master, 48 kHz and 96 kHz) t BCLK Delay TBD t FSTDM Delay FSD t ASDATA Delay TABDD t DSDATA1 Setup TDDS t DSDATA1 Hold TDDH TDM256 MODE (Slave, 48 kHz and 96 kHz) f BCLK Frequency ...

Page 6

... Model AD1835AAS AD1835AAS-REEL AD1835AASZ* AD1835AASZ-REEL* EVAL-AD1835AEB *Z = Pb-free part. CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD1835A features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...

Page 7

DVDD CLATCH PD/RST AGND OUTLN1 OUTLP1 OUTRN1 OUTRP1 AGND AVDD OUTLN2 OUTLP2 Pin Number Mnemonic 1, 39 DVDD 2 CLATCH 3 CIN PD/RST 4 5, 10, 16, 24, 30, 35 AGND 6, 12, 25, 31 OUTLNx 7, 13, 26, 32 ...

Page 8

AD1835A–Typical Performance Characteristics 0 –50 –100 –150 0 5 FREQUENCY – Normalized to TPC 1. ADC Composite Filter Response 5 0 –5 –10 –15 –20 –25 – FREQUENCY – Hz TPC 2. ADC High-Pass Filter Response, f ...

Page 9

FREQUENCY – kHz TPC 7. DAC Composite Filter Response, f 0.10 0.05 0 –0.05 –0. FREQUENCY – kHz TPC 8. DAC Composite Filter Response, f (Pass-Band Section) REV. A 0.2 ...

Page 10

AD1835A DEFINITIONS Dynamic Range The ratio of a full-scale input signal to the integrated input noise in the pass band ( kHz), expressed in decibels (dB). Dynamic range is measured with a –60 dB input signal and ...

Page 11

Each DAC has independent volume control and clickless mute functions. The ADC comprises two 24-bit conversion channels with multibit - modulators and decimation filters. The AD1835A also contains an on-chip reference with a nominal value of ...

Page 12

AD1835A DAC I/P CLOCK SCALING 1 MCLK 2 12.288MHz 2/3 ADC O/P t CLS t CLATCH CCP CCLK CIN D15 D14 t COUT COE Table III. ADC Sample Rate Settings Sample Rate ADC Control 1 Register IMCLK/512 1100000xx0xxxxxx (48 kHz) ...

Page 13

The format is similar to the Motorola SPI format except the input data-word is 16 bits wide. The maximum serial bit clock frequency is 12.5 MHz and may be completely asynchronous to the sample rate of the ADCs and DACs. ...

Page 14

AD1835A t ABH ABCLK t ABL t ALS ALRCLK ASDATA LEFT-JUSTIFIED MSB MODE ASDATA COMPATIBLE MODE ASDATA RIGHT-JUSTIFIED MODE t DBH DBCLK t DBL t DLS DLRCLK t DDS DSDATA LEFT-JUSTIFIED MSB MODE DSDATA ...

Page 15

LRCLK 128 BCLKs BCLK 16 BCLKs ADC SLOT 1 SLOT 5 SLOT 2 SLOT 3 SLOT 4 DATA LEFT RIGHT MSB MSB – 1 MSB – 2 Figure 7. ADC Packed Mode 128 LRCLK 256 BCLKs BCLK 32 BCLKs SLOT ...

Page 16

AD1835A 2 Pin Name I 2 ASDATA ( DSDATA1 ( DSDATA2 (I)/AAUXDATA1 ( DSDATA3 (I)/AAUXDATA2 ( DSDATA4 (I)/AAUXDATA3 (I) I ALRCLK (O) LRCLK for ADC ABCLK (O) BCLK for ADC DLRCLK (I)/AUXLRCLK(I/O) ...

Page 17

LRCLK BCLK ADC No. 1 SLAVE DATA MCLK LRCLK BCLK ADC No. 2 SLAVE DATA MCLK LRCLK BCLK ADC No. 3 SLAVE DATA MCLK Figure 14. Auxiliary Mode Connection (Master Mode) to SHARC LRCLK BCLK ADC No. 1 MASTER DATA ...

Page 18

AD1835A CONTROL/STATUS REGISTERS The AD1835A has 15 control registers which are used to set the operating mode of the part. The other two registers, ADC Peak 0 and ADC Peak 1, are read-only and should not be programmed. ...

Page 19

Register Address Register Name 0000 DACCTRL1 0001 DACCTRL2 0010 DACVOL1 0011 DACVOL2 0100 DACVOL3 0101 DACVOL4 0110 DACVOL5 0111 DACVOL6 1000 DACVOL7 1001 DACVOL8 1010 ADCPeak0 1011 ADCPeak1 1100 ADCCTRL1 1101 ADCCTRL2 1110 ADCCTRL3 1111 Reserved Address R/W RES De-emphasis ...

Page 20

AD1835A Table VIII. DAC Volume Control Function Address R/W RES DAC Volume 15, 14, 13 0010 = DACL1 0 0 0000000000 = Mute 0011 = DACR1 0000000001 ...

Page 21

CASCADE MODE Dual AD1835A Cascade The AD1835A can be cascaded to an additional AD1835A which, in addition to six external stereo ADCs, can be used to create a 32-channel audio system with 16 inputs and 16 outputs. The cascade is ...

Page 22

AD1835A 47 F 600Z 5.76k 5.76k AUDIO + INPUT 120pF NPO 100pF NPO OP275 V REF 5.76k 5.76k 750k OP275 V REF Figure 18. Typical ADC Input Filter Circuit V 237 (2.25V) ADCxN 1nF NPO 100pF NPO OUTx 1nF NPO ...

Page 23

MAX REV. A OUTLINE DIMENSIONS 52-Lead Metric Quad Flat Package [MQFP] (S-52-1) Dimensions shown in millimeters 1.03 2.45 0.88 MAX 0. SEATING PLANE 7.80 REF 0.23 0.11 VIEW A 7 PIN ...

Page 24

AD1835A Revision History Location 12/03—Data Sheet changed from REV REV. A. Changes to ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . ...

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