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CDB4327

Description
Low Cost, 20-Bit, Stereo, Audio D/A Converter
File Size2MB,36 Pages
ManufacturerCirrus Logic
Websitehttp://www.cirrus.com
Download Datasheet View All

CDB4327 Overview

Low Cost, 20-Bit, Stereo, Audio D/A Converter

CS4327
Low Cost, 20-Bit, Stereo, Audio D/A Converter
Features
Description
The CS4327 is a complete stereo digital-to-analog out-
put system. In addition to the traditional D/A function, the
CS4327 includes a digital interpolation filter followed by
an 128X oversampled delta-sigma modulator. The mod-
ulator output controls the reference voltage input to an
ultra-linear analog low-pass filter. This architecture al-
lows for infinite adjustment of sample rate between 1 and
50 kHz while maintaining linear phase response simply
by changing the master clock frequency.
The CS4327 also includes an extremely flexible serial
port utilizing mode select pins to support multiple inter-
face formats.
The master clock can be either 256, 384, or 512 times
the input sample rate, supporting various audio
environments.
ORDERING INFO
CS4327-KS -10 to 70 °C
16-pin Plastic SSOP
CDB4327
CS4327 Evaluation Board
l
20-Bit Conversion
l
108 dB Signal-to-Noise-Ratio (EIAJ)
l
100 dB Dynamic Range
l
Single-Ended Outputs
l
Complete Stereo DAC System
-
128X Interpolation Filter
-
Delta-Sigma DAC
-
Analog Post Filter
l
Low Clock Jitter Sensitivity
l
Filtered Line-Level Outputs
l
Digital De-emphasis for 32 kHz, 44.1 kHz &
48 kHz
-
Linear Phase Filtering
-
Zero Phase Error Between Channels
I
DIF0
15
DIF1
11
DEM0 DEM1
1
2
VA+
3
VD+
6
16
CMFILT
LRCK 7
SCLK 9
10
SDATA
Serial Input
Interface
De-emphasis
Voltage Reference
Interpolator
Delta-Sigma
Modulator
DAC
Analog
Low-Pass
Filter
14
AOUTL
AUTO_MUTE
12
Interpolator
Delta-Sigma
Modulator
8
MCLK
DAC
4
Analog
Low-Pass
Filter
13
AOUTR
5
DGND
AGND
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
Copyright
©
Cirrus Logic, Inc. 1997
(All Rights Reserved)
DEC ‘97
DS190F1
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