
Features
Complete Stereo DAC System
8
×
Interpolation Filter
64
×
Delta-Sigma DAC
Analog Post Filter
Adjustable System Sampling Rates
including 32kHz, 44.1kHz & 48kHz
120 dB Signal-to-Noise Ratio
Low Clock Jitter Sensitivity
Completely Filtered Line-Level Outputs
Linear Phase Filtering
Zero Phase Error Between Channels
No External Components Needed
Flexible Serial Interface for Either 16
or 18 bit Input Data
General Description
The CS4328 is a complete stereo digital-to-analog out-
put system. In addition to the traditional D/A function,
the CS4328 includes an 8
×
digital interpolation filter fol-
lowed by a 64
×
oversampled delta-sigma modulator.
The modulator output controls the reference voltage in-
put to an ultra-linear analog low-pass filter. This
architecture allows for infinite adjustment of sample
rate between 1 kHz and 50 kHz while maintaining lin-
ear phase response simply by changing the master
clock frequency.
The CS4328 also includes an extremely flexible serial
port utilizing two select pins to support four different
interface modes.
The master clock can be either 256 or 384 times the
input word rate, supporting various audio environ-
ments.
ORDERING INFORMATION:
CS4328-KP
CS4328-KS
CS4328-BP
CS4328-BS
CDB CS4328 Evaluation Board
0 to 70
°
C
0 to 70
°
C
-40 to +85
°
C
-40 to +85
°
C
28-pin Plastic DIP
28-pin Plastic SOIC
28-pin Plastic DIP
28-pin Plastic SOIC
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 FAX: (512) 445-7581
http://www.crystal.com
OCT ’93
DS62F3
1
18-Bit, Stereo D/A Converter for Digital Audio
-VREF
AOUTL
20
19
18
SDATAI
TST
2
DIF1
12
DIF0
13
ACKI
24
LRCK
BICK
28
Voltage Reference
3
VA+
VA-
5
AGND1
1
AOUTR
26
CMPO
CALI
27
CALO
8
21
CMPI
22
ACKO
VD+
DGND
Clock Osc/
Divider
11
16
AGND2
AGND3
4
25
14
15
XTI XTO CKS
RST
10
9
17
Interpolator
6
8x
Modulator
Modulator
Modulator
Modulator
S
R
A
M
Analog
Low-Pass
Filter
Analog
Low-Pass
Filter
DAC
DAC
Calibration
Microcontroller
MOSFET
Output
Stage
MOSFET
Output
Stage
Serial Input
Interface
8x
Interpolator
CS4328
Copyright
Crystal Semiconductor Corporation 1993
(All Rights Reserved)