CS4385 Datasheet, PDF (1/56 Pages) Cirrus Logic – 114 dB, 192kHz 8-CHANNEL D/A CONVERTER

CS4385
114 dB, 192 kHz 8-Channel D/A Converter
Features
z Advanced Multi-bit Delta Sigma Architecture
z 24-Bit Conversion
z Automatic Detection of Sample Rates up to
192 kHz
z 114 dB Dynamic Range
z -100 dB THD+N
z Direct Stream Digital Mode
– Non-decimating volume control
– On-chip 50 kHz filter
– Matched PCM and DSD analog output levels
z Compatible with Industry-standard Time
Division Multiplexed (TDM) Serial Interface
z Selectable Digital Filters
z Volume Control with 1/2-dB Step Size and
Soft Ramp
z Low Clock Jitter Sensitivity
z +5 V Analog Supply, +2.5 V Digital Supply
z Separate 1.8 to 5 V Logic Supplies for the
Control & Serial Ports
I
Description
The CS4385 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 mixing,
selectable fast and slow digital interpolation filters fol-
lowed by an oversampled, multi-bit delta sigma
modulator which includes mismatch shaping technology
that eliminates distortion due to capacitor mismatch. Fol-
lowing this stage is a multi-element switched capacitor
stage and low-pass filter with differential analog outputs.
The CS4385 also has a proprietary DSD processor
which allows for volume control and 50 kHz on-chip filter-
ing 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 CS4385 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
CS4385-CQZ -10 to 70 °C 48-pin LQFP, Lead-Free
CS4385-DQZ -40 to 85 °C 48-pin LQFP, Lead-Free
CDB4385
Evaluation Board
C ontrol Port Supply = 1.8 V to 5 V
Digital S upply = 2.5 V
A nalog S upply = 5 V
Hardware Mode or
I²C /SP I S oftw are Mode
C ontrol Data
Reset
Serial A udio Port
Supply = 1.8 V to 5 V
P C M S erial
A udio Input
TDM Serial
A udio Input
DSD A udio
In p u t
Re giste r/Hardwa re
C onfigura tion
Inte rnal Voltage
R e fe re nc e
V olume
8 C ontrols
Digita l
F ilte rs
Multi-bit ∆Σ
Modula tors
DSD Processor
-Volume control
-50 kHz filter
Switch-C a p
DAC and
A na log F ilte rs
8
E ight C hannels
of Differential
O utputs
8
E xterna l Mute
C ontrol
2
Mute Signals
Advance 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. 2004
(All Rights Reserved)
OCT ‘04
DS671A1