CS4222
20-Bit Stereo Audio Codec with Volume Control
Features
Description
The CS4222 is a highly integrated, high performance,
20-bit, audio codec providing stereo analog-to-digital
and stereo digital-to-analog converters using delta-sig-
ma conversion techniques. The device operates from a
single +5 V power supply, and features low power con-
sumption. Selectable de-emphasis filter for 32, 44.1, and
48 kHz sample rates is also included.
The CS4222 also includes an analog volume control ca-
pable of 113.5 dB attenuation in 0.5 dB resolution. The
analog volume control architecture preserves dynamic
range during attenuation. Volume control changes are
implemented using a "soft" ramping or zero crossing
technique.
Applications include reverb processors, musical instru-
ments, DAT, and multitrack recorders.
The CS4222 is packaged in a 28-pin plastic SSOP.
ORDERING INFORMATION
CS4222-KS -10° to +70° C 28-pin SSOP
CDB4222
Evaluation Board
I
l
99 dB 20-bit A/D Converters
l
99 dB 20-bit D/A Converters
l
110 dB DAC Signal-to-Noise Ratio (EIAJ)
l
Analog Volume Control
l
Soft Mute Capability
l
Differential Inputs/Outputs
l
On-chip Anti-aliasing and Output Smoothing
Filters
l
De-emphasis for 32, 44.1 and 48 kHz
l
Stand-Alone or Control Port Mode
l
Single +5 V power supply
-
0.5 dB Step Resolution
-
113.5 dB Attenuation
SCL/CCLK SDA/CDIN
AD0/CS
SMUTE
MCLK
VD
VA
RST
DEM1
DEM0
Control Port
Digital Filters
with De-Emphasis
LRCK
SCLK
SDIN
SDOUT
Serial Audio Data Interface
Analog Low
Pass and
Output Stage
Left
DAC
Right
DAC
Left
ADC
Right
ADC
Volume
Control
Volume
Control
AOUTL+
AOUTL-
AOUTR+
AOUTR-
AINL-
AINL+
AINR-
AINR+
Digital Filters
DGND
AGND
Preliminary Product Information
Cirrus Logic, Inc.
Crystal Semiconductor Products Division
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.crystal.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright
©
Cirrus Logic, Inc. 1997
(All Rights Reserved)
JAN ‘97
DS236PP3
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