CS4365_07 Datasheet, PDF (1/52 Pages) Cirrus Logic – 114 dB, 192 kHz 6-Channel D/A Converter

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 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
 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
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.
Following this stage is a multi-element switched capac-
itor 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 is available in a 48-pin LQFP package in
both Commercial (-40° to +85°) and Automotive
(-40° to +105°) grades. The CDB4365 Customer Dem-
onstration board is also available for device evaluation
and implementation suggestions. Please see “Ordering
Information” on page 51 for complete details.
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
receivers, digital TV’s, mixing consoles, effects proces-
sors, sound cards, and automotive audio systems.
Control Port Supply = 1.8 V to 5 V
Digital Supply = 2.5 V
Analog Supply = 5 V
Hardware Mode or
I²C/SPI Software Mode
Control Data
Reset
Serial Audio Port
Supply = 1.8 V to 5 V
PCM Serial
Audio Input
TDM Serial
Audio Input
DSD Audio
Input
Register/Hardware
C onfigura tion
Internal Voltage
Reference
Volume
6 Controls
Digital
F ilte rs
Multi-bit ∆Σ
Modulators
S witch-C a p
DAC and
Analog F ilters
6
Six Channels of
Differential
O utputs
6
DSD Processor
-Volume control
-50 kHz filter
External Mute
C ontrol
6
Mute Signals
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2007
(All Rights Reserved)
APRIL '07
DS670F1