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CDB4227 Fiches technique(PDF) 4 Page - Cirrus Logic

No de pièce CDB4227
Description  Six Channel, 20-Bit Codec
Download  36 Pages
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Fabricant  CIRRUS [Cirrus Logic]
Site Internet  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CDB4227 Fiches technique(HTML) 4 Page - Cirrus Logic

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CS4227
4
DS281PP2
1.
CHARACTERISTICS AND SPECIFICATIONS
ANALOG CHARACTERISTICS (T
A = 25 °C; VA+, VD+ = +5 V; Full Scale Input Sine wave, 997 kHz;
Fs = 44.1 kHz; Measurement Bandwidth is 20 Hz to 20 kHz; Local components as shown in Figure 5; SPI mode,
Format 3, unless otherwise specified.)
Notes: 1. Referenced to typical full-scale differential input voltage (2Vrms).
2. Input resistance is for the input selected. Non-selected inputs have a very high (>1M
Ω) input resistance.
The input resistance will vary with gain value selected, but will always be greater than the min. value
specified.
3. Filter characteristics scale with output sample rate.
4. The analog modulator samples the input at 5.6448 MHz for an output sample rate of 44.1 kHz. There is
no rejection of input signals which are multiples of the sampling frequency (n x 5.6448 MHz ±20.0 kHz
where n = 0,1,2,3...).
5. Group delay for Fs = 44.1 kHz, tgd = 15/44.1 kHz = 340 µs
Parameter
Symbol
CS4227-KQ
CS4227-BQ
Units
Min
Typ
Max
Min
Typ
Max
Analog Input Characteristics - Minimum gain setting (0 dB) Differential Input; unless otherwise specified.
ADC Resolution
Stereo Audio channels
Mono channel
16
16
-
-
20
20
16
16
-
-
20
20
Bits
Bits
Total Harmonic Distortion
THD
0.003
-
0.003
-
%
Dynamic Range
(A weighted, Stereo)
(unweighted, Stereo)
(A weighted, Mono)
92
-
89
95
92
-
-
-
-
90
-
87
93
90
-
-
-
-
dB
dB
dB
Total Harmonic
-1 dB, Stereo
(Note 1)
Distortion + Noise -1 dB, Mono
(Note 1)
THD+N
-
-
-88
-
-82
-72
-
-
-86
-
-80
-70
dB
dB
Interchannel Isolation
-
90
-
-
90
-
dB
Interchannel Gain Mismatch
-
0.1
-
-
0.1
-
dB
Programmable Input Gain Span
8
9
10
8
9
10
dB
Gain Step Size
2.7
3
3.3
2.7
3
3.3
dB
Offset Error (with high pass filter)
-
-
0
-
-
0
LSB
Full Scale Input Voltage (Single Ended):
0.90
1.0
1.10
0.90
1.0
1.10
Vrms
Gain Drift
-
100
-
-
100
-
ppm/°C
Input Resistance
(Note 2)
10
-
-
10
-
-
k
Input Capacitance
-
-
15
-
-
15
pF
CMOUT Output Voltage
-
2.3
-
-
2.3
-
V
A/D Decimation Filter Characteristics
Passband
(Note 3)
0.02
-
20.0
0.02
-
20.0
kHz
Passband Ripple
-
-
0.01
-
-
0.01
dB
Stopband
(Note 3)
27.56
-
5617.2 27.56
-
5617.2
kHz
Stopband Attenuation
(Note 4)
80
-
-
80
-
-
dB
Group Delay (Fs = Output Sample Rate) (Note 5)
tgd
-
15/Fs
-
-
15/Fs
-
s
Group Delay Variation vs. Frequency
∆ t
gd
--
0
-
-
0
µs


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