Control Port Supply = 1.8 V to 5 V Analog Supply = 5 VDigital Supply = 2.5 V
Hardware Mode or
I
2
C/SPI Software Mode
Control Data
Reset
Serial Audio Port
Supply = 1.8V to 5 V
PCM Serial
Audio Input
TDM Serial
Audio Input
DSD Audio
Input
Mute Signals
Eight Channels of
Differential
Outputs
CS4385/65
Cirrus Logic, Inc. · 2901 Via Fortuna · Austin TX 78746 USA · T 512-851-4000 · T 800-888-5016 · F 512-851-4977
Product Bulletin 0154-1004-PB-LP © 2004 Cirrus Logic, Inc. All rights reserved. Product information is subject to change without notice. Cirrus Logic and Leading the Digital
Entertainment Revolution are trademarks of Cirrus Logic, Inc. Other brand and product names may be trademarks or service marks of their respective owners.
These new Cirrus Logic®8 and 6-channel
digital-to-analog converters provide
precisely what designers need in today's
multichannel audio applications. They
deliver premium analog performance and
sound quality by utilizing low-latency digital
filtering, fifth-order, multi-bit, Delta-Sigma
digital-to-analog conversion, logarithmic
digital-volume control and switched-
capacitor analog filtering. Both ICs use
patented automatic mode selection based
on sample rate detection to support PCM
data at sample rates from 4 kHz to 192
kHz, and a dedicated interface is included
for DSD audio data. Design the CS4385
(8-channel), and CS4365 (6-channel) into
your next-generation home theater
systems, high-performance sound cards,
SACD and DVD players, A/V receivers,
automotive audio systems, mixing
consoles, and effects processors.
For SACD applications, these D/A
converters include a patented Direct
Stream Digital processor, which includes a
volume-control engine that does not
decimate the data stream, thereby
maintaining the native sampling rate of
2.8224 MHz and preserving the integrity of
the SACD data format. Also included is an
on-chip 50 kHz filter that complies with
recommendations in the SACD standards.
Cirrus Logic's techniques for providing
SACD volume control and filtering offers
manufacturers the ability to add SACD at
no additional cost in the analog section of
their products.
Ease of design, a high level of integration,
and a flexible feature set allows
manufacturers to minimize time to market
while maximizing performance and
consumer affordability.
New High-performance D/A Converters are
Ideal for SACD & DVD-Audio Systems
Designed for Multichannel Applications
8.7 mm
IC dimensions
(pin-to-pin nominal)
48-pin LQFP
8.7 mm
CS4385
Outstanding Audio Fidelity
•8-channel (CS4385)
• 6-channel (CS4365)
• 24-bit conversion
•114 dB dynamic range
• -100 dB THD+N
• Advanced multi-bit Delta-Sigma
architecture
• Up to 192 kHz sample rates for
DVD-Audio equipment
• Direct Stream Digital mode (SACD)
•Non-decimating volume control
• On-chip 50 kHz filter
• Dedicated inputs
• Supports industry-standard TDM
interface
• Selectable low-latency digital filters
• Volume control with soft ramp
• 0.5 dB step size
•Zero crossing click-free transitions
• Low clock jitter sensitivity
•µC or stand-alone operation
• 6 mute output pins (CS4365)
• 2 mute output pins (CS4385)
•Pin-compatible devices for easy
upgrade path
•Available in a 48-Pin LQFP
• CS4385 Price: $5.48 (10K)
• CS4365 Price: $4.29 (10K)
CS4385/65
