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CS4222 Datasheet, PDF (2/26 Pages) Cirrus Logic – 20-Bit Stereo Audio Codec with Volume Control
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CS4222
ANALOG CHARACTERISTICS ( TA = 25°C; VA, VD = +5V; Full Scale Input Sine wave,
997 Hz; Fs = 48 kHz; Measurement Bandwidth is 20 Hz to 20 kHz; Local components as shown in "Recom-
mended Connection Diagram"; SPI mode, Format 0, unless otherwise specified.)
Parameter
Symbol Min
Typ
Max Units
Analog Input Characteristics
ADC Resolution
-
-
20
Bits
Total Harmonic Distortion
THD
0.003
-
%
Dynamic Range
(A-weighted):
(unweighted):
TBD
99
TBD
96
-
dB
-
dB
Total Harmonic Distortion + Noise -1 dB
(Note 1) THD+N
-
-90
TBD
dB
Interchannel Isolation
(1 kHz)
-
90
-
dB
Interchannel Gain Mismatch
-
0.1
-
dB
Offset Error
(with High Pass Filter)
(HPF defeated with CAL)
-
-
0
LSB
-
TBD
-
LSB
Full Scale Input Voltage (Differential)
1.9
2.0
2.1 Vrms
Gain Drift
-
100
- ppm/°C
Input Resistance
10
-
-
kΩ
Input Capacitance
-
-
15
pF
Common Mode Input Voltage
-
2.3
-
V
A/D Decimation Filter Characteristics
Passband
(Note 2)
0
-
21.8 kHz
Passband Ripple
-
-
±0.01 dB
Stopband
(Note 2)
30
-
6114 kHz
Stopband Attenuation
(Note 3)
80
-
-
dB
Group Delay (Fs = Output Sample Rate)
Group Delay Variation vs. Frequency
High Pass Filter Characteristics
(Note 4) tgd
-
15/Fs
-
s
∆ tgd
-
-
0
µs
Frequency Response:
-3 dB
-0.1 dB
(Note 2)
-
3.7
-
Hz
-
20
-
Hz
Phase Deviation
@ 20 Hz
(Note 2)
-
10
- Degree
Passband Ripple
-
-
0
dB
Notes:
1. Referenced to typical full-scale differential input voltage (2 Vrms)
2. Filter characteristics scale with output sample rate. For output sample rates, Fs, other than 48 kHz,
the 0.01 dB passband edge is 0.4535xFs and the stopband edge is 0.625xFs.
3. The analog modulator samples the input at 6.144 MHz for an Fs equal to 48 kHz. There is
no rejection of input signals which are multiples of the sampling frequency ( n x 6.144 MHz ±21.8 kHz
where n = 0,1,2,3...).
4. Group delay for Fs = 48 kHz, tgd = 15/48 kHz = 312µs
* Parameter definitions are given at the end of this data sheet.
Specifications are subject to change without notice.
2
DS236PP3
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