REV. B
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AD1839
2 ADC, 6 DAC,
96 kHz, 24-Bit H9018-H9004 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 One DAC
Supports 16-/20-/24-Bit Word Lengths
Multibit H9018-H9004 Modulators with
Perfect Differential Linearity Restoration for
Reduced Idle Tones and Noise Floor
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 Scale
DAC and ADC Software Controllable Clickless Mutes
Digital De-emphasis Processing
Supports 256 H11547 f
S
, 512 H11547 f
S,
and 768 H11547 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
®
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 AD1839 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 H9018-H9004
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
H9018-H9004 modulators and decimation filters.
The AD1839 also contains an on-chip reference with a nominal
value of 2.25 V.
The AD1839 contains a flexible serial interface that allows
for glueless connection to a variety of DSP chips, AES/EBU
receivers, and sample rate converters. The AD1839 can be
configured in left-justified, right-justified, I
2
S, or DSP com-
patible serial modes. Control of the AD1839 is achieved by
means of an SPI
®
compatible serial port. While the AD1839
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 AD1839 is available in a 52-lead MQFP package and is
specified for the industrial temperature range of –40ºC to +85ºC.
FUNCTIONAL BLOCK DIAGRAM
OUTL1
CONTROL PORT CLOCK
FILTD
FILTR
ADCLP
ADCLN
ADCRP
ADCRN
DLRCLK
DBCLK
DSDATA1
DSDATA2
DSDATA3
DAUXDATA
MCLKASDATAABCLKALRCLKODVDDDVDD AVDDAVDDDVDD
AGNDDGND
CINCLATCHCCLK COUT
DIGITAL
FILTER
PD/RST M/S
H9018-H9004
ADC
VOLUMESERIAL DATA
I/O PORT
DIGITAL
FILTER
H9018-H9004
DAC
V
REF
OUTR1
VOLUME
OUTL2
VOLUME
DIGITAL
FILTER
H9018-H9004
DAC
OUTR2
VOLUME
OUTL3
VOLUME
DIGITAL
FILTER
H9018-H9004
DAC
OUTR3
VOLUME
DIGITAL
FILTER
H9018-H9004
ADC
AAUXDATA3
AD1839
AGND AGND AGNDDGND