CS4382A_05 Datasheet, PDF (1/47 Pages) Cirrus Logic – 114 dB, 192 kHz 8-Channel D/A Converter

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 whitch 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 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 (-10° to
+70°C) and Automotive grades (-40° to +85°C). The
CDB4382A Customer Demonstration board is also
available for device evaluation and implementation sug-
gestions. Please see “Ordering Information” on page 47
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.
Control & Serial Audio Port
Supplies = 1.8 V to 5 V
Digital Supply = 2.5 V
Hardware Mode or
I²C/SPI Software Mode
Control Data
Reset
Register/Hardware
Configuration
Analog Supply = 5 V
Internal Voltage
Reference
PCM Serial
Audio Input
DSD Audio
Input
Volume
8 Controls
Digital
Filters
Multi-bit ∆Σ
Modulators
DSD Processor
-50 kHz filter
Switch-Cap
DAC and
Analog Filters
8
Differential
Outputs
8
External Mute
Control
2
Mute Signals
Preliminary Product Information
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
NOVEMBER '05
DS618PP2