CS4384
103 dB, 192 kHz 8-Channel D/A Converter
Features
Advanced Multi-bit Delta Sigma Architecture
24-bit Conversion
Automatic Detection of Sample Rates up to
192 kHz
103 dB Dynamic Range
-88 dB THD+N
Single-Ended Output Architecture
Direct Stream Digital
®
(DSD
™)
Mode
– Non-Decimating Volume Control
– On-Chip 50 kHz Filter
– Matched PCM and DSD Analog Output
Levels
Compatible with Industry-Standard Time
Division Multiplexed (TDM) Serial Interface
Selectable Digital Filters
Volume Control with 1/2-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 and Serial Ports
C ontrol Port Supply = 1.8 V to 5 V
Description
The CS4384 is a complete 8-channel digital-to-analog
system. This D/A system includes digital de-emphasis,
half-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 single-ended analog
outputs.
The CS4384 also has a proprietary DSD processor
which allows for volume control and 50 kHz on-chip fil-
tering without an intermediate decimation stage. It also
offers an optional path for direct DSD conversion by di-
rectly using the multi-element switched capacitor array.
The CS4384 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, and sound cards.
This product is available in 48-pin LQFP package in
Commercial (-40°C to +85°C) temperature grade. See
for complete details.
A nalog Supply = 5 V
Digital Supply = 2.5 V
Le ve l T ra nsla tor
Hardware Mode or
I
2
C /SPI Software Mode
C ontrol Data
Register/Hardware
C onfiguration
Internal Voltage
Reference
Reset
Serial A udio Port
Supply = 1.8 V to 5 V
PC M Serial
A udio Input
TDM Serial
A udio Input
DSD A udio
Input
8
Volume
C ontrols
Digital
F ilters
Multi-bit
∆Σ
Modulators
Le ve l T ra nsla tor
S e ria l Inte rfa ce
Switch-C ap
DAC and
Analog F ilters
8
E ight C hannels
of Single-E nded
O utputs
DSD Processor
-Volume control
-50 kHz filter
E xternal Mute
C ontrol
2
Mute Signals
Copyright
©
Cirrus Logic, Inc. 2008
(All Rights Reserved)
MAY '08
DS620F1
CIRRUS [ CIRRUS LOGIC ]
