cs4227 Cirrus Logic, Inc., cs4227 Datasheet - Page 4

• Manufacturer Part Number: cs4227
• Description: Six Channel, 20-bit Codec
• Manufacturer: Cirrus Logic, Inc.

1.
ANALOG CHARACTERISTICS
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).
4
Analog Input Characteristics - Minimum gain setting (0 dB) Differential Input; unless otherwise specified.
ADC Resolution
Total Harmonic Distortion
Dynamic Range
Total Harmonic
Distortion + Noise -1 dB, Mono
Interchannel Isolation
Interchannel Gain Mismatch
Programmable Input Gain Span
Gain Step Size
Offset Error (with high pass filter)
Full Scale Input Voltage (Single Ended):
Gain Drift
Input Resistance
Input Capacitance
CMOUT Output Voltage
A/D Decimation Filter Characteristics
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay (Fs = Output Sample Rate) (Note 5)
Group Delay Variation vs. Frequency
CHARACTERISTICS AND SPECIFICATIONS
2. Input resistance is for the input selected. Non-selected inputs have a very high (>1M ) input resistance.
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
5. Group delay for Fs = 44.1 kHz, t
The input resistance will vary with gain value selected, but will always be greater than the min. value
specified.
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...).
Parameter
-1 dB, Stereo
Stereo Audio channels
(unweighted, Stereo)
(A weighted, Stereo)
(A weighted, Mono)
Mono channel
(Note 1)
(Note 1)
(Note 2)
(Note 3)
(Note 3)
(Note 4)
gd
(T
= 15/44.1 kHz = 340 µs
A
= 25 °C; VA+, VD+ = +5 V; Full Scale Input Sine wave, 997 kHz;
Symbol
THD+N
THD
t
gd
t
gd
27.56
0.90
0.02
Min
2.7
16
16
92
89
10
80
8
-
-
-
-
-
-
-
-
-
-
-
-
CS4227-KQ
0.003
15/Fs
Typ
100
-88
0.1
1.0
2.3
95
92
90
9
3
-
-
-
-
-
-
-
-
-
-
-
-
5617.2 27.56
Max
1.10
20.0
0.01
-82
-72
3.3
20
20
10
15
0
0
-
-
-
-
-
-
-
-
-
-
-
0.90
0.02
Min
2.7
16
16
90
87
10
80
8
-
-
-
-
-
-
-
-
-
-
-
-
CS4227-BQ
0.003
15/Fs
Typ
100
-86
0.1
1.0
2.3
93
90
90
9
3
-
-
-
-
-
-
-
-
-
-
-
-
5617.2
Max
1.10
20.0
0.01
-80
-70
3.3
20
20
10
15
0
0
-
-
-
-
-
-
-
-
-
-
-
CS4227
DS281PP2
ppm/°C
Units
Vrms
LSB
Bits
Bits
kHz
kHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
k
pF
dB
dB
%
V
s
s