CDB4220 查看數據表（PDF） - Cirrus Logic
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CDB4220 Datasheet PDF : 32 Pages
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CS4220 CS4221
1. CHARACTERISTICS AND SPECIFICATIONS
ANALOG CHARACTERISTICS (TA = 25° C; VA, VD = +5 V; Full Scale Input Sine wave, 997 Hz;
Fs = 48 kHz; Measurement Bandwidth is 20 Hz to 20 kHz; Local components as shown in Figures 4 and 5; SPI®
mode, Format 0, unless otherwise specified.)
CS4220/1 - KS
Parameter
Symbol Min
Analog Input Characteristics
ADC Resolution
-
Total Harmonic Distortion
THD
-
Dynamic Range
A-weighted
95
unweighted
92
Total Harmonic Distortion + Noise
(Note 1) THD+N
-
Interchannel Isolation
(1 kHz)
-
Interchannel Gain Mismatch
-
Offset Error
with High Pass Filter
-
Full Scale Input Voltage (Differential)
1.9
Gain Drift
-
Input Resistance
10
Input Capacitance
-
Common Mode Input Voltage
-
A/D Decimation Filter Characteristics
Passband
(Note 2)
0
Passband Ripple
-
Stopband
(Note 2)
30
Stopband Attenuation
(Note 3)
80
Group Delay (Fs = Output Sample Rate)
tgd
-
(Note 4)
Group Delay Variation vs. Frequency
High Pass Filter Characteristics
∆tgd
-
Frequency Response
-3 dB (Note 2)
-
-0.1 dB
-
Phase Deviation @ 20 Hz
(Note 2)
-
Passband Ripple
-
Typ
-
0.003
100
97
-92
90
-
-
2.0
100
-
-
2.3
-
-
-
-
15/Fs
-
3.7
20
10
-
Max Unit
24
Bits
-
%
-
dB
-
-87
dB
-
dB
0.1
dB
0
LSB
2.1
Vrms
-
ppm/°C
-
kΩ
15
pF
-
V
21.8
kHz
±0.01
dB
6114 kHz
-
dB
-
s
0
µs
-
Hz
-
-
Degree
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 0.4535x Fs and the stopband edge is 0.625x Fs.
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 = 312 µs.
4
DS284PP3
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