CS4382A
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 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,
one-dB step size volume control, ATAPI channel mix-
ing, selectable fast and slow digital interpolation filters
followed by an oversampled, multi-bit delta sigma mod-
ulator which includes mismatch shaping technology that
eliminates distortion due to capacitor mismatch. Follow-
ing this stage is a multi-element switched capacitor
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 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.
ORDERING INFORMATION
See page 41.
Control & Serial Audio Port
Supplies = 1.8 V to 5 V
Digital Supply = 2.5 V
Analog Supply = 5 V
Level Translator
Hardware Mode or
I
2
C/SPI Software Mode
Control Data
Register/Hardware
Configuration
Internal Voltage
Reference
Reset
PCM Serial
Audio Input
Level Translator
Serial Interface
8
Volume
Controls
Digital
Filters
Multi-bit
∆Σ
Modulators
Switch-Cap
DAC and
Analog Filters
8
8
Differential
Outputs
DSD Audio
Input
DSD Processor
-50 kHz filter
External Mute
Control
2
Mute Signals
Copyright
©
Cirrus Logic, Inc. 2005
(All Rights Reserved)
APR '05
DS618PP1
CIRRUS [ CIRRUS LOGIC ]
