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PDF CS4221 Data sheet ( Hoja de datos )
| Número de pieza | CS4221 | |
| Descripción | 24-Bit Stereo Audio Codec with 3V Interface | |
| Fabricantes | Cirrus Logic | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CS4221 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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CS4220
CS4221
24-Bit Stereo Audio Codec with 3V Interface
Features
l 100 dB Dynamic Range A/D Converters
l 100 dB Dynamic Range D/A Converters
l 105 dB DAC Signal-to-Noise Ratio (EIAJ)
l Analog Volume Control (CS4221 only)
l Differential Inputs / Outputs
l On-chip Anti-aliasing and Output Smoothing
Filters
l De-emphasis for 32, 44.1 and 48 kHz
l Supports Master and Slave Modes
l Single +5 V power supply
l On-Chip Crystal Oscillator
l 3 - 5 V Digital Interface
Description
The CS4220/1 is a highly integrated, high performance,
24-bit, audio codec providing stereo analog-to-digital
and stereo digital-to-analog converters using delta-sig-
ma conversion techniques. The device operates from a
single +5 V power supply, and features low power con-
sumption. Selectable de-emphasis filter for 32, 44.1, and
48 kHz sample rates is also included.
The CS4221 also includes an analog volume control ca-
pable of 113.5 dB attenuation in 0.5 dB steps. The
analog volume control architecture preserves dynamic
range during attenuation. Volume control changes are
implemented using a “soft” ramping or zero crossing
technique.
Applications include digital effects processors, DAT, and
multitrack recorders.
ORDERING INFORMATION
CS4220-KS -10 to +70 °C 28-pin SSOP
CS4221-KS -10 to +70 °C 28-pin SSOP
CDB4220/1
Evaluation Board
I
RST
LRCK
SCLK
SDIN
SDOUT
(DIF1)
(DIF0) (DEM0) (DEM1)
SCL/CCLK SDA/CDIN AD0/CS I 2C/SPI
VL MCLK VD VA
Control Port
Left
DAC
Volume *
Control
Voltage
Reference
AOUTL+
AOUTL-
Right
DAC
Volume *
Control
Clock OSC
Left
ADC
Right
ADC
XTI XTO
( ) = CS4220
DGND
* = CS4221
AGND
AOUTR+
AOUTR-
AINL-
AINL+
AINR-
AINR+
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 1999
(All Rights Reserved)
APR ‘00
DS284PP3
1
1 page  
CS4220 CS4221
ANALOG CHARACTERISTICS (CONTINUED)
CS4220/1 - KS
Parameter
Symbol Min Typ Max Unit
Analog Output Characteristics - Minimum Attenuation, 10 kΩ, 100 pF load; unless otherwise specified.
DAC Resolution
- - 24 Bits
Signal-to-Noise, Idle-Channel Noise (CS4221 only) DAC
muted, A-weighted
97 105
- dB
Dynamic Range
DAC not muted, A-weighted
DAC not muted, unweighted
95 100
92 97
- dB
-
Total Harmonic Distortion
THD
-
0.003
-
%
Total Harmonic Distortion + Noise
THD+N
-
-92 -87 dB
Interchannel Isolation
(1 kHz)
- 90 - dB
Interchannel Gain Mismatch
- - 0.1 dB
Attenuation Step Size
All Outputs
0.35 0.5 0.65 dB
Programmable Output Attenuation Span
110 113.5 - dB
Differential Offset Voltage
- ±10 - mV
Common Mode Output Voltage
- 2.4 - V
Full Scale Output Voltage
1.8 1.9 2.0 Vrms
Gain Drift
- 100 - ppm/°
C
Out-of-Band Energy
Fs/2 to 2 Fs
- -60 - dBFs
Analog Output Load
Resistance
Capacitance
10 -
- kΩ
- - 100 pF
Combined Digital and Analog Filter Characteristics
Frequency Response10 Hz to 20 kHz
- ±0.1 - dB
Deviation from Linear Phase
- ±0.5 - Degree
Passband: to 0.01 dB corner
(Notes 5 and 6)
0 - 21.8 kHz
Passband Ripple
(Note 6)
- - ±0.01 dB
Stopband
(Notes 5 and 6)
26.2 -
- kHz
Stopband Attenuation
(Note 7)
70 -
- dB
Group Delay (Fs = Input Word Rate)
Power Supply
tgd - 16/Fs - s
Power Supply Current
VA
VD
VL
Total Power Down
- 46 60 mA
- 9 20
- 35
- 0.4 -
Power Supply Rejection Ratio
1 kHz
- 65 - dB
Notes: 5. The passband and stopband edges scale with frequency. For input word rates, Fs, other than 48 kHz,
the 0.01 dB passband edge is 0.4535x Fs and the stopband edge is 0.5465x Fs.
6. Digital filter characteristics.
7. Measurement bandwidth is 10 Hz to 3 Fs.
DS284PP3
5
5 Page 
3. TYPICAL CONNECTION DIAGRAM — CS4221
CS4220 CS4221
+5V
Supply
Ferrite Bead
+ 1 µF
0.1 µF
2Ω
0.1 µF + 1 µF
+2.7 - 5V
0.1 µF + 1 µF
150Ω
150Ω
150Ω
150Ω
Microcontroller
Rs = 500 Ω
* Required for
Master Mode only
21
VA
20 AINL+
2.2 nF
19 AINL-
6
VD VL
AOUTL+
AOUTL-
AOUTR+
AOUTR-
13
25
26
24
23
Analog Filter
Analog Filter
17 AINR+
2.2 nF
CS4221
16 AINR-
XTI 3
10 SCL/CCLK
11 SDA/CDIN
12 AD0/CS
27 RST
18 I2C/SPI
1
NC
14
NC
15
NC
28
NC
AGND
22
XTO 2 40 pF
SCLK
LRCK
SDIN
SDOUT
5
4
9
8
DGND
7
Rs
Rs
Rs
Rs
*
47 kΩ
40 pF
External
Clock Input
Eliminate the crystal
and capacitors when
using an external
clock input
Audio
DSP
Figure 5. CS4221 Recommended Connection Diagram
(Also see Recommended Layout Diagram)
DS284PP3
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CS4221.PDF ] | |
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