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AD1833A
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Multichannel,24-Bit, 192 kHz, - DAC
FEATURES
5 V Stereo Audio System with 3.3 V Tolerant Digital
Interface
Supports 96 kHz Sample Rates on 6 Channels and
192 kHz on 2 Channels
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
Differential Output for Optimum Performance
DACs Signal-to-Noise and Dynamic Range: 110 dB
–94 dB THD + N—6-Channel Mode
–95 dB THD + N—2-Channel Mode
On-Chip Volume Control per Channel with 1024-Step
Linear Scale
Software Controllable Clickless Mute
Digital De-emphasis Processing
Supports 256
f
S
, 512
f
S
, and 768
Clock Modes
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
Supports Packed Data Mode and TDM Mode
48-Lead LQFP Plastic Package
f
S
Master
APPLICATIONS
DVD Video and Audio Players
Home Theater Systems
Automotive Audio Systems
Set-Top Boxes
Digital Audio Effects Processors
FUNCTIONAL BLOCK DIAGRAM
AGND
DGND
FILTR FILTD
MCLK
CDATA
CLATCH
CCLK
OUTLP1
OUTLN1
OUTLP2
OUTLN2
OUTLP3
OUTLN3
OUTRP3
OUTRN3
OUTRP2
OUTRN2
OUTRP1
OUTRN1
ZERO FLAGS
DV
DD1
DV
DD2
AV
DD
RESET
SOUT
AD1833A
SPI
PORT
DATA
PORT
L/RCLK
BCLK
SDIN1
SDIN2
SDIN3
INTERPOLATOR
DAC
INTERPOLATOR
DAC
INTERPOLATOR
DAC
INTERPOLATOR
DAC
INTERPOLATOR
DAC
FILTER
ENGINE
INTERPOLATOR
DAC
GENERAL DESCRIPTION
The AD1833A is a complete, high performance, single-chip,
multichannel, digital audio playback system. It features six audio
playback channels, each comprising a high performance digital
interpolation filter, a multibit
S
-
D
modulator featuring Analog
Devices’ patented technology, and a continuous-time voltage-out
analog DAC section. Other features include an on-chip clickless
attenuator and mute capability for each channel, programmed
through an SPI compatible serial control port.
The AD1833A is fully compatible with all known DVD formats,
accommodating word lengths of up to 24 bits at sample rates of
48 kHz and 96 kHz on all six channels while supporting a 192 kHz
sample rate on two channels. It also provides the Redbook stan-
dard 50
m
s/15
m
s digital de-emphasis filters at sample rates of
32 kHz, 44.1 kHz, and 48 kHz.
The AD1833A has a very flexible serial data input port that
allows glueless interconnection to a variety of ADCs, DSP chips,
AES/EBU receivers, and sample rate converters. It can be con-
figured in right-justified, left-justified, I
2
S, or DSP serial port
compatible modes. The AD1833A accepts serial audio data in MSB
first, twos complement format. The AD1833A can be operated
from a single 5 V power supply; it also features a separate supply
pin for its digital interface that allows it to be interfaced to devices
using 3.3 V power supplies.
The AD1833A is fabricated on a single monolithic integrated
circuit and is housed in a 48-lead LQFP package for operation
from –40
∞
C to +85
∞
C.
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