CS4328 Datasheet, PDF (1/31 Pages) Cirrus Logic – 18-Bit, Stereo D/A Converter for Digital Audio

CS4328
18-Bit, Stereo D/A Converter for Digital Audio
Features
General Description
• 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
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
0 to 70 °C
28-pin Plastic DIP
CS4328-KS
0 to 70 °C
28-pin Plastic SOIC
CS4328-BP
-40 to +85 °C 28-pin Plastic DIP
CS4328-BS
-40 to +85 °C 28-pin Plastic SOIC
CDB4328
CS4328 Evaluation Board
20
LRCK ₁₉
BICK ₁₈
SDATAI
DIF0
13
DIF1
12
Serial Input
Interface
10
TST
9
RST
8x
Interpolator
IInntteerrpp8ooxllaattoorr
Calibration
Microcontroller
21
CALO
8
CMPI
VD+
16
DGND
17
DDMMeelloottaadd--uuSSllaaiiggttoommrraa
S
DDMMeelloottaadd--uuSSllaaiiggttoommrraa
R
Clock Osc/
A
Divider
M
14 15 11 22
XTI XTO CKS ACKO
AGND1 VA- VA+
1
5
3
Voltage Reference
DAC
Analog
Low-Pass
Filter
MOSFET
Output
Stage
DAC
Analog
Low-Pass
Filter
MOSFET
Output
Stage
24
ACKI
27
CALI
6
CMPO
28
-VREF
2
AOUTL
26
AOUTR
4
AGND2
25
AGND3
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
[phone] FAX: [phone]
http://www.crystal.com
Copyright © Crystal Semiconductor Corporation 1993
(All Rights Reserved)
OCT ’93
DS62F3
1