1
Copyright
Cirrus Logic, Inc. 1998
(All Rights Reserved)
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
CS4329
20-Bit, Stereo D/A Converter for Digital Audio
Features
20-Bit Conversion
115 dB Signal-t o-Noise-Ratio (EIAJ)
Complete Stereo DAC System
- 128X Interpolation Filter
- Delta-Sigma DAC
- Analog Post Filter
106 dB Dynamic Range
Low Clock Jitter Sensitivity
Filtered Line-Level Outputs
- Linear Phase Filtering
- Zero Phase Error Between Channels
Adjustable System Sampling Rates
- including 32 kHz, 44.1 kHz & 48 kHz
Digital De-emphasis for 32 kHz, 44.1 kHz, &
48 kHz
Pin-compatible with the CS4390
Description
The CS4329 is a complete stereo digital-to-analog out-
put sys tem. In addit ion to the tr aditional D/A function, t he
CS4329 includes a digital interpolation filter followed by
an 128X oversampled de lta-sigma modu lat or. The mod-
ulator output controls the reference voltage input to an
ultra-linear analog low-pass filter. This architecture al-
lows for infin ite adjustment of sample r ate between 1 and
50 kHz while maintaining linear phase response simply
by changing the master clock frequency.
The CS4329 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 INFORMATION
CS4329-KP -10° to 70° C 20-pi n Plast ic DIP
CS4329-KS -10° to 70° C 20-pin Plastic SSOP
CDB4329 Evaluation Board
I
LRCK
AUTO_MUTE
DGND
DIF0
MUTE_L
20
16
5
11
7
SCLK
9
SDATA
10
DIF1
19
DEM0
1
DEM1
2
MCLK
8
AGND
4
VA VD
AOUTL+
18
AOUTR+
14
Se rial In put
In terface
Inte rp olat or
Inte rp olat or
De-emphasis
Delta- Sigm a
Modula tor
Delta- Sigm a
Modula tor
DAC
DAC
Voltage Refer ence
Analog
Low-Pass
Filter
Analog
Low-Pass
Filter
DIF2
12 3 6
AOUTL-
17
AOUTR-
13
MUTE_R
15
APR ‘98
DS153F1
