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PDF CDB4382A Data sheet ( Hoja de datos )
| Número de pieza | CDB4382A | |
| Descripción | 192 kHz 8-Channel D/A Converter | |
| Fabricantes | Cirrus Logic | |
| Logotipo |  |
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CS4382A
114 dB, 192 kHz 8-Channel D/A Converter
Features
! Advanced Multi-bit Delta Sigma Architecture
! 24-bit Conversion
! Up to 192 kHz Sample Rates
! 114 dB Dynamic Range
! -100 dB THD+N
! Direct Stream Digital Mode
! On-Chip 50 kHz Filter
! Matched PCM and DSD Analog Output Levels
! Selectable Digital Filters
! Volume Control with 1-dB Step Size and Soft
Ramp
! Low Clock-Jitter Sensitivity
! +5 V Analog Supply, +2.5 V Digital Supply
! Separate 1.8 to 5 V Logic Supplies for the
Control & Serial Ports
Description
The CS4382A is a complete 8-channel digital-to-analog
system. This D/A system includes digital de-emphasis,
one-dB step size volume control, ATAPI channel mix-
ing, selectable fast and slow digital interpolation filters
followed by an oversampled, multi-bit delta sigma mod-
ulator whitch includes mismatch shaping technology
that eliminates distortion due to capacitor mismatch.
Following this stage is a multi-element switched capac-
itor stage and low-pass filter with differential analog
outputs.
The CS4382A also has a proprietary DSD processor
which allows for 50 kHz on-chip filtering without an in-
termediate decimation stage. The CS4382A is available
in a 48-pin LQFP package in both Commercial (-10° to
+70°C) and Automotive grades (-40° to +85°C). The
CDB4382A Customer Demonstration board is also
available for device evaluation and implementation sug-
gestions. Please see “Ordering Information” on page 47
for complete details.
The CS4382A accepts PCM data at sample rates from
4 kHz to 216 kHz, DSD audio data, and delivers excel-
lent sound quality. These features are ideal for multi-
channel audio systems including SACD players, A/V re-
ceivers, digital TV’s, mixing consoles, effects
processors, sound cards and automotive audio
systems.
Control & Serial Audio Port
Supplies = 1.8 V to 5 V
Digital Supply = 2.5 V
Hardware Mode or
I2C/SPI Software Mode
Control Data
Reset
Register/Hardware
Configuration
Analog Supply = 5 V
Internal Voltage
Reference
PCM Serial
Audio Input
DSD Audio
Input
Volume
8 Controls
Digital
Filters
Multi-bit ∆Σ
Modulators
DSD Processor
-50 kHz filter
Switch-Cap
DAC and
Analog Filters
8 Differential
Outputs
8
External Mute
Control
2
Mute Signals
Preliminary Product Information
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
NOVEMBER '05
DS618PP2
1 page  
CS4382Awww.DataSheet4U.com
LIST OF TABLES
Table 1. Common Clock Frequencies........................................................................................................ 20
Table 2. Digital Interface Format, Stand-Alone Mode Options................................................................... 21
Table 3. Mode Selection, Stand-Alone Mode Options ............................................................................... 21
Table 4. Direct Stream Digital (DSD), Stand-Alone Mode Options ............................................................ 21
Table 5. Digital Interface Formats - PCM Mode......................................................................................... 33
Table 6. Digital Interface Formats - DSD Mode ......................................................................................... 33
Table 7. ATAPI Decode ............................................................................................................................. 38
Table 8. Example Digital Volume Settings ................................................................................................. 39
DS618PP2
5
5 Page 
CS4382Awww.DataSheet4U.com
COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE
The filter characteristics have been normalized to the sample rate (Fs) and can be referenced to the desired sam-
ple rate by multiplying the given characteristic by Fs.
See Note 12.
Fast Roll-Off
Parameter
Min Typ
Combined Digital and On-chip Analog Filter Response - Single-Speed Mode - 48 kHz
Passband (Note 9)
to -0.01 dB corner
0
-
to -3 dB corner
0
-
Frequency Response
10 Hz to 20 kHz -0.01
-
StopBand
0.547
-
StopBand Attenuation
(Note 10)
102
-
Group Delay
- 10.4/Fs
De-emphasis Error (Note 11)
Fs = 32 kHz
-
-
(Relative to 1 kHz)
Fs = 44.1 kHz
-
-
Fs = 48 kHz
-
-
Combined Digital and On-chip Analog Filter Response - Double-Speed Mode - 96 kHz
Passband (Note 9)
to -0.01 dB corner
0
-
to -3 dB corner
0
-
Frequency Response
10 Hz to 20 kHz -0.01
-
StopBand
.583 -
StopBand Attenuation
(Note 10)
80
-
Group Delay
- 6.15/Fs
Combined Digital and On-chip Analog Filter Response - Quad-Speed Mode - 192 kHz
Passband (Note 9)
to -0.01 dB corner
0
-
to -3 dB corner
0
-
Frequency Response
10 Hz to 20 kHz -0.01
-
StopBand
.635 -
StopBand Attenuation
(Note 10)
90
-
Group Delay
- 7.1/Fs
Max
.454
.499
+0.01
-
-
-
±0.23
±0.14
±0.09
.430
.499
+0.01
-
-
-
.105
.490
+0.01
-
-
-
Unit
Fs
Fs
dB
Fs
dB
s
dB
dB
dB
Fs
Fs
dB
Fs
dB
s
Fs
Fs
dB
Fs
dB
s
Notes:
8. Slow roll-off interpolation filter is only available in Software Mode.
9. Response is clock-dependent and will scale with Fs.
10. For Single-Speed Mode, the Measurement Bandwidth is from stopband to 3 Fs.
For Double-Speed Mode, the Measurement Bandwidth is from stopband to 3 Fs.
For Quad-Speed Mode, the Measurement Bandwidth is from stopband to 1.34 Fs.
11. De-emphasis is available only in Single-Speed Mode; only 44.1 kHz De-emphasis is available in Hard-
ware Mode.
12. Amplitude vs. Frequency plots of this data are available in Section 7. “Filter Plots” on page 41 .
DS618PP2
11
11 Page | ||
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| PDF Descargar | [ Datasheet CDB4382A.PDF ] | |
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