Adc digital filter characteristics, Cs4270 adc digital filter characteristics – Cirrus Logic CS4270 User Manual
Page 12
12
DS686F1
CS4270
ADC DIGITAL FILTER CHARACTERISTICS
Measurement Bandwidth is 10 Hz to 20 kHz unless otherwise specified.
Notes: 9. Plots of this data are contained in
Section 9. “Filter Plots” on page 38
through
.
10. The filter frequency response scales precisely with Fs.
11. Response shown is for Fs equal to 48 kHz. Filter characteristics scale with Fs.
Parameter
Symbol
Min
Typ
Max
Unit
Single-Speed Mode
Passband
(-0.1 dB)
0
-
0.49
Fs
Passband Ripple
-
-
0.035
dB
Stopband
0.57
-
-
Fs
Stopband Attenuation
70
-
-
dB
Group Delay
t
gd
-
12/Fs
-
s
Double-Speed Mode
Passband
(-0.1 dB)
0
-
0.49
Fs
Passband Ripple
-
-
0.05
dB
Stopband
0.56
-
-
Fs
Stopband Attenuation
69
-
-
dB
Group Delay
t
gd
-
9/Fs
-
s
Quad-Speed Mode
Passband
(-0.1 dB)
0
-
0.26
Fs
Passband Ripple
-
-
0.05
dB
Stopband
0.50
-
-
Fs
Stopband Attenuation
60
-
-
dB
Group Delay
t
gd
-
5/Fs
-
s
High-Pass Filter Characteristics
Frequency Response
-3.0 dB
-0.13 dB
-
-
1
20
-
-
Hz
Hz
Phase Deviation
@ 20 Hz
-
10
-
deg
Passband Ripple
-
-
0
dB