CS4327 Datasheet, PDF (1/36 Pages) Cirrus Logic – Low Cost, 20-Bit, Stereo, Audio D/A Converter

CS4327
Low Cost, 20-Bit, Stereo, Audio D/A Converter
Features
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
- Linear Phase Filtering
- Zero Phase Error Between Channels
l Digital De-emphasis for 32 kHz, 44.1 kHz &
48 kHz
I
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
LRCK ⁷
SCLK ⁹
SDATA ¹⁰
DIF0 DIF1
15
11
Serial Input
Interface
DEM0 DEM1
1
2
De-emphasis
VA+ VD+
36
Voltage Reference
16 _CMFILT
Interpolator
AUTO_MUTE 12
Interpolator
5
DGND
Delta-Sigma
Modulator
Delta-Sigma
Modulator
8
MCLK
DAC
DAC
4
AGND
Analog
Low-Pass
Filter
14 _AOUTL
Analog
Low-Pass
Filter
13 _AOUTR
Cirrus Logic, Inc.
Crystal Semiconductor Products Division
P.O. Box 17847, Austin, Texas 78760
[phone] FAX: [phone]
http://www.crystal.com
Copyright © Cirrus Logic, Inc. 1997
(All Rights Reserved)
DEC ‘97
DS190F1
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