CS4365
114 dB, 192 kHz
6
-Channel D/A Converter
Features
!
Advanced Multi-bit Delta Sigma Architecture
!
24-bit Conversion
!
Automatic Detection of Sample Rates up to 192
Description
The CS4365 is a complete 6-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 differential analog
outputs.
The CS4365 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 CS4365 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 45.
kHz
!
114 dB Dynamic Range
!
-100 dB THD+N
!
Direct Stream Digital 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 & Serial Ports
Control Port Supply = 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
Serial Audio Port
Supply = 1.8 V to 5 V
PCM Serial
Audio Input
TDM Serial
Audio Input
DSD Audio
Input
6
Volume
Controls
Digital
Filters
Multi-bit
∆Σ
Modulators
Serial Interface
Level Translator
Switch-Cap
DAC and
Analog Filters
6
6
Six Channels of
Differential
Outputs
DSD Processor
-Volume control
-50 kHz filter
External Mute
Control
6
Mute Signals
Copyright
©
Cirrus Logic, Inc. 2005
(All Rights Reserved)
MAY '05
DS670PP1
CIRRUS [ CIRRUS LOGIC ]
