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PDF CDB4328 Data sheet ( Hoja de datos )
| Número de pieza | CDB4328 | |
| Descripción | 18-Bit/ Stereo D/A Converter for Digital Audio | |
| Fabricantes | ETC | |
| Logotipo |  |
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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
LRCK
BICK
SDATAI
20
19
18
DIF0
13
DIF1
12
Serial Input
Interface
TST
RST
10
9
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 53
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
(512) 445-7222 FAX: (512) 445-7581
http://www.crystal.com
Copyright © Crystal Semiconductor Corporation 1993
(All Rights Reserved)
OCT ’93
DS62F3
1
1 page  
CS4328
+5V Digital
+
10 µF
0.1 µF
16
Audio
Data
Processor
VD+
20 LRCK
19 BICK
18 SDATAI
optional crystal oscillator
7
74HC
device
10 pF
1.2 M
23
15
NC
NC
XTO
15 pF
External Clock
Mode
Select
14 XTI
22 ACKO
24 ACKI
11
CKS
13
DIF0
12
DIF1
CS4328
D/A CONVERTER
Power Up/
Cal. Control
9
RST
TST DGND AGND3 AGND2
10 17
25 4
+5V
0.1 µF
+
10 µF
Analog
3
VA+
0.1 µF
5
VA-
0.1 µF
-5V
Analog
+ 10 µF
VREF- 28
0.1 µF
10 µF
+
AOUTL 2 51Ω
AOUTR 26 51Ω
CMPO
CMPI
CALO
CALI
6
8
21
27
10 nF
NPO
10 nF
NPO
AGND1
1
Figure 1. Typical Connection Diagram
DS62F3
5
5 Page 
CS4328
CRYSTAL FRQRSP48
2.0
1.5
AMPL(dBr) vs GENFRQ(Hz)
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
10
100
1k 10k 30k
Figure 9. Frequency Response (48 kHz word rate)
CRYSTAL NOISE
0
-20
AMP1(dBr) & AMP1(dBr) vs FREQ(kHz)
-40
-60
-80
-100
-120
-140
-160
0.02 9.82 19.6 29.4 39.2 49.0 58.8 68.6 78.4 88.2 98.0
Figure 10. Muted Idle Channel Noise
CRYSTAL NOISEUNM
0
AMP1(dBr) vs FREQ(kHz)
-20
-40
-60
-80
-100
-120
-140
-160
0.02 9.82 19.6 29.4 39.2 49.0 58.8 68.6 78.4 88.2 98.0
Figure 11. Unmuted Idle Noise
DS62F3
CRYSTAL THDAM18A
-80
THD+N(dBr) vs GENAMP(dBFS)
-82
-84
-86
-88
-90
-92
-94
-96
-98
-100
-100 -90 -80 -70 -60 -50 -40 -30 -20 -10
0
Figure 12. THD+N vs 18-bit Input Signal Level
CRYSTAL TR20R
10
8
6
4
2
0
-2
-4
-6
-8
-10
-120
-110
-100
BANDPASS(dBr) vs LEVEL(dBr)
-90 -80 -70 -60
Figure 13. Fade-to-Noise Linearity
CRYSTAL IMPULSE
2.000
AMP1(V) vs TIME(usec)
1.583
1.167
0.750
0.333
-0.083
-0.500
0.0 95.8 192 287 383 479 575 670 766 862
Figure 14. Impulse Response
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CDB4328.PDF ] | |
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