Cirrus Logic CS4382A - Manual

Copyright
© Cirrus Logic, Inc. 2009
(All Rights Reserved) http://www.cirrus.com
114 dB, 192 kHz 8-Channel D/A Converter
Features
 Advanced Multi-bit Delta Sigma Architecture
 24-bit Conversion
 Up to 192 kHz Sample Rates
 114 dB Dynamic Range
 -100 dB THD+N
 Direct Stream Digital ® (DSD ™ ) Mode
 On-chip 50 kHz Filter
 Matched PCM and DSD Analog Output Levels
 Selectable Digital Filters
 Volume Control with 1 dB Step Size and Soft
Ramp
 Low Clock-jitter Sensitivity
 +5 V Analog Supply, +2.5 V Digital Supply
 Separate 1.8 to 5 V Logic Supplies for the
Control & Serial Ports
Description
The CS4382A is a complete 8-channel digital-to-analog
system. This D/A system includes digital de-emphasis,
1 dB step size volume control, ATAPI channel mixing,
selectable fast and slow digital interpolation filters fol-
lowed by an oversampled, multi-bit delta-sigma
modulator which includes mismatch shaping technolo-
gy that eliminates distortion due to capacitor mismatch.
Following this stage is a multi-element switched capac-
itor stage and low-pass filter with differential analog
outputs.
The CS4382A also has a proprietary DSD processor
which allows for 50 kHz on-chip filtering without an in-
termediate decimation stage. The CS4382A is available
in a 48-pin LQFP package in both Commercial (-40°C to
+85°C) and Automotive grades (-40°C to +105°C). The
CDB4382A Customer Demonstration board is also
available for device evaluation and implementation sug-
gestions. Please see
“Ordering Information” on page 48
for complete details.
The CS4382A accepts PCM data at sample rates from
4 kHz to 216 kHz, DSD audio data, and delivers excel-
lent sound quality. These features are ideal for multi-
channel audio systems including SACD players, A/V re-
ceivers, digital TV’s, mixing consoles, effects
processors, sound cards, and automotive audio
systems.
C o n tro l & S erial A u d io P o rt
S u p p lies = 1.8 V to 5 V
R e giste r/H a rdwa re
C onfigura tion
Inte rna l V olta ge
R e fe re nce
R es et
S
e
ria
l In
te
rfa
c
e
L
e
ve
l T
ra
n
sl
a
tor
Le
ve
l T
ra
n
sl
a
to
r
D ig ital S u p p ly = 2.5 V
H ard w are Mo d e o r
I 2 C /S P I S o ftw are Mo d e
C o n tro l D ata
A n alo g S u p p ly = 5 V
D ifferen tial
O u tp u ts 8
8
P C M S erial
A u d io In p u t
V olume
C ontrols
D igita l
F ilte rs
S witch-C a p
D A C a nd
A na log F ilte rs
Multi-bit ∆Σ
Modula tors
D S D A u d io
In p u t
D S D P roce ssor
-50 kH z filte r
E xte rna l Mute
C ontrol
Mu te S ig n als
2
8
CS4382A
JAN '09
DS618F2