CS4225
Digital Audio Conversion System
Features
Description
The CS4225 is a single-chip, stereo analog-to-digital
and quad digital-to-analog converter using delta-sigma
conversion techniques. Applications include CD-quality
music, FM radio quality music, telephone-quality
speech. Four D/A converters make the CS4225 ideal for
surround sound and automotive applications.
The CS4225 is supplied in a 44-pin plastic package with
J-leads (PLCC) or as a die.
ORDERING INFORMATION
CS4225-KL
0° to 70° C
CS4225-BL
-40° to 85° C
CS4225-YU -40° to 85° C
CDB4225
44-pin PLCC
44-pin PLCC
die
Evaluation Board
l
Stereo 16-bit A/D Converters
l
Quad 16-bit D/A Converters
l
Sample Rates From 4 kHz to 50 kHz
l
>100 dB DAC Signal-to-Noise Ratio
l
Variable Bandwidth Auxiliary 12-bit A/D
l
Programmable Input Gain & Output
Attenuation
l
+5V Power Supply
l
On-chip Anti-aliasing and Output Smoothing
Filters
l
Error Correction and De-Emphasis
I
AD2/CDIN/CKF1
AD3/CS/IF1
SCL/CCLK/IF0
SDA/CDOUT/CKF0
VREF
CMOUT VD+ VA+
Control Port
DEM
RST-PDN
Digital Filters
with De-Emphasis
LRCK
Serial Audio Data Interface
SCLK
SDIN1
SDIN2
SDOUT1
SDOUT2
DIF/HOLD
DAC#1
DAC#2
DAC#3
DAC#4
Volume
Control
Volume
Control
Volume
Control
Volume
Control
Voltage
Reference
H/S
Analog Low Pass and
Output Stage
AOUT1
AOUT2
AOUT3
AOUT4
2
MUX
Left
ADC
Right
ADC
PLL
IS0/AD0,
IS1/AD1
AIN1L
AIN1R
AIN2L
AIN2R
AIN3L
AIN3R
AGND2
Digital
Filters
Input
Gain
AINAUX
12-Bit
ADC
Clock Osc/
Divider
OVL
CLKOUT
XTI
XTO
Auxiliary Digital Input
FILT
CL CR DATAUX
SCLKAUX
LRCKAUX
AGND1 DGND
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)
Input
MUX
NOV ‘93
DS86PP8
1
CIRRUS [ CIRRUS LOGIC ]
