AD1839AASZ-REEL1 AD [Analog Devices], AD1839AASZ-REEL1 Datasheet

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AD1839AASZ-REEL1

Manufacturer Part Number
AD1839AASZ-REEL1
Description
2 ADC, 6 DAC, 96 kHz, 24-Bit Sigma-Delta Codec
Manufacturer
AD [Analog Devices]
Datasheet
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 Σ-∆ modulators with perfect differential linearity
Data-directed scrambling DACs—least sensitive to jitter
Single-ended output
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
DAC and ADC software controllable clickless mutes
Digital de-emphasis processing
Supports 256 × f
Power-down mode and soft power-down mode
Flexible serial data port with right-justified, left-justified,
TDM interface mode supports 8-in/8-out operation using a
52-lead MQFP plastic package
APPLICATIONS
DVD video and audio players
Home theater systems
Automotive audio systems
Audio/visual receivers
Digital audio effects process
Rev. B
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.
restoration for reduced idle tones and noise floor
scale
I
single SHARC® SPORT
2
S compatible, and DSP serial modes
AAUXDATA3
DAUXDATA
DSDATA1
DSDATA2
DSDATA3
S
DLRCLK
, 512 × f
ADCRN
ADCLN
ADCRP
DBCLK
ADCLP
DVDD
S
, and 768 × f
DVDD
ADC
ADC
Σ-∆
Σ-∆
ODVDD
S
master mode clocks
ALRCLK
DIGITAL
DIGITAL
FILTER
FILTER
SERIAL DATA
DGND
FUNCTIONAL BLOCK DIAGRAM
I/O PORT
ABCLK
DGND
ASDATA
AGND
CCLK
Figure 1.
AGND AGND AGND
CONTROL PORT
96 kHz, 24-Bit Sigma-Delta Codec
CLATCH
GENERAL DESCRIPTION
The AD1839A is a high performance single-chip codec that
features three stereo DACs and one stereo ADC. Each DAC
comprises a high performance digital interpolation filter, a
multibit Σ-∆ modulator featuring Analog Devices’ patented
technology, and a continuous-time voltage-out analog section.
Each DAC has independent volume control and clickless mute
functions. The ADC comprises two 24-bit conversion channels
with multibit Σ-∆ modulators and decimation filters.
The AD1839A also contains an on-chip reference with a
nominal value of 2.25 V.
The AD1839A contains a flexible serial interface that allows
glueless connection to a variety of DSP chips, AES/EBU
receivers, and sample rate converters. The AD1839A can be
configured in left-justified, right-justified, I
ble serial modes. Control of the AD1839A is achieved by means
of an SPI® compatible serial port. While the AD1839A can be
operated from a single 5 V supply, it also features a separate
supply pin for its digital interface that allows the device to be
interfaced to other devices using 3.3 V power supplies. The
AD1839A is available in a 52-lead MQFP package and is
specified for the −40°C to +85°C industrial temperature range.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
CIN
AD1839A
COUT
DIGITAL
DIGITAL
DIGITAL
CLOCK
FILTER
FILTER
FILTER
MCLK
PD/RST
© 2004 Analog Devices, Inc. All rights reserved.
M/S
V
DAC
DAC
DAC
Σ-∆
Σ-∆
Σ-∆
REF
AVDD
AVDD
2 ADC, 6 DAC,
OUTL1
OUTR1
OUTL2
OUTR2
OUTL3
OUTR3
FILTD
FILTR
2
S, or DSP compati-
AD1839A
www.analog.com

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AD1839AASZ-REEL1 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 Σ-∆ modulators with perfect differential linearity restoration for ...

Page 2

AD1839A TABLE OF CONTENTS Specifications..................................................................................... 3 Test Conditions............................................................................. 3 Timing Specifications....................................................................... 5 Absolute Maximum Ratings............................................................ 7 Temperature Range ...................................................................... 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 Typical Performance Characteristics ............................................. 9 Terminology .................................................................................... 11 Functional Overview...................................................................... 12 ...

Page 3

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

Page 4

AD1839A Parameter 1 ADC DECIMATION FILTER, 48 kHz Pass Band Pass-Band Ripple Stop Band Stop-Band Attenuation Group Delay ADC DECIMATION FILTER, 96 kHz 1 Pass Band Pass-Band Ripple Stop Band Stop-Band Attenuation Group Delay DAC INTERPOLATION FILTER, 48 kHz 1 ...

Page 5

TIMING SPECIFICATIONS Table 2. Parameter MASTER CLOCK AND RESET PDR SPI PORT t CCH t CCL t CCP t CDS t CDH t CLS t CLH t COE t COD t COTS DAC SERIAL PORT ...

Page 6

AD1839A Parameter TDM256 MODE (Master, 48 kHz and 96 kHz) t TBD t FSD t TABDD t TDDS t TDDH TDM256 MODE (Slave, 48 kHz and 96 kHz TBCH t TBCL t TFS t TFH t TBDD ...

Page 7

ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter Rating AVDD, DVDD, ODVDD to AGND, DGND −0 +6.0 V AGND to DGND −0 +0.3 V Digital I/O Voltage to DGND −0.3 V ...

Page 8

AD1839A PIN CONFIGURATION AND FUNCTION DESCRIPTIONS CONNECT Table 5. Pin Function Descriptions Pin No. Mnemonic 1, 39 DVDD 2 CLATCH 3 CIN 4 PD/RST 5, 10, 16, 24, 30, 34 AGND 6, 8, 12, 14, 25, 27, ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 0 –50 –100 –150 FREQUENCY (Normalized to Figure 4. ADC Composite Filter Response 5 0 –5 –10 –15 –20 –25 – FREQUENCY (Hz) Figure 5. ADC High-Pass Filter Response ...

Page 10

AD1839A 0 –50 –100 –150 0 50 100 FREQUENCY (kHz) Figure 10. DAC Composite Filter Response, f 0.10 0.05 0 –0.05 –0. FREQUENCY (kHz) Figure 11. DAC Composite Filter Response kHz (Pass-Band Section) S ...

Page 11

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

Page 12

AD1839A FUNCTIONAL OVERVIEW ADCS There are two ADC channels in the AD1839A, configured as a stereo pair. Each ADC has fully differential inputs. The ADC section can operate at a sample rate kHz. The ADCs include ...

Page 13

To maintain the highest performance possible, the clock jitter of the master clock signal should be limited to less than 300 ps rms, measured using the edge-to-edge technique. Even at these levels, extra noise or tones may appear in the ...

Page 14

AD1839A SERIAL DATA PORTS—DATA FORMAT The ADC serial data output mode defaults to the popular I format, where the data is delayed by 1 BCLK interval from the edge of the LRCLK. By changing Bits ADC ...

Page 15

LRCLK LEFT CHANNEL BCLK SDATA MSB LEFT CHANNEL LRCLK BCLK MSB SDATA LEFT CHANNEL LRCLK BCLK MSB SDATA RIGHT-JUSTIFIED MODE—SELECT NUMBER OF BITS PER CHANNEL LRCLK BCLK SDATA MSB NOTES 1. DSP MODE DOES NOT IDENTIFY CHANNEL LRCLK ...

Page 16

AD1839A t DBH DBCLK t DBL t DLS DLRCLK t DSDATA DDS LEFT-JUSTIFIED MSB MODE t DDH DSDATA COMPATIBLE MODE DSDATA RIGHT-JUSTIFIED MODE LRCLK BCLK ADC DATA LRCLK BCLK ADC DATA MSB – DDS MSB ...

Page 17

LRCLK 128 BCLKs BCLK 16 BCLKs SLOT 1 SLOT 2 SLOT 3 SLOT 4 DAC DATA LEFT 1 LEFT 2 LEFT 3 LEFT 4 MSB MSB – 1 MSB – 2 Figure 21. DAC Packed Mode 128 LRCLK 256 BCLKs ...

Page 18

AD1839A FSTDM BCLK TDM MSB TDM ASDATA1 1ST CH TDM (OUT) INTERNAL ASDATA ADC L1 MSB TDM DSDATA1 1ST CH TDM (IN) INTERNAL DSDATA1 DAC L1 AUX 2 LRCLK I S (FROM AUX ADC NO. 1) AUX 2 BCLK I ...

Page 19

LRCLK BCLK ADC NO. 1 SLAVE DATA MCLK LRCLK BCLK ADC NO. 2 SLAVE DATA MCLK LRCLK BCLK ADC NO. 3 SLAVE DATA MCLK CONTROL/STATUS REGISTERS The AD1839A has 13 control registers which are used to set ...

Page 20

AD1839A ADC Control Registers The AD1839A register map has five registers that are used to control the functionality and read the status of the ADCs. The function of the bits in each of these registers is discussed below. ADC Peak ...

Page 21

Table 11. DAC Control 1 Address R/W RES De-emphasis 15, 14, 13 0000 None 01 = 44.1 kHz 10 = 32.0 kHz 11 = 48.0 kHz Table 12. DAC Control 2 ...

Page 22

AD1839A Table 16. ADC Control 2 R/W Address RES Master/Slave Aux Mode 15, 14, 13 1101 Slave 1 = Master Table 17. ADC Control 3 R/W RES Address RES Reserved 15, 14, ...

Page 23

AUX ADC (SLAVE) DRx ASDATA RFSx ALRCLK RCLKx ABCLK SHARC (SLAVE) TFSx TCLKx DTx TFSx/ RFSx DTx L1 L2 DRx L1 L2 BCLK MSB DTx MSB DRx 47µF 600Z 5.76kΩ 5.76kΩ AUDIO + INPUT 120pF NPO 100pF NPO 237Ω OP275 ...

Page 24

... AD1839AAS-REEL −40°C to +85°C 1 AD1839AASZ −40°C to +85°C 1 AD1839AASZ-REEL −40°C to +85°C EVAL-AD1839AEB −40°C to +85° Pb-free part. © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. ...

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