Cirrus Logic CS5571 - Manual (Page 25)

CS5571
DS768PP1 25
3/25/08
10:56
3.10 Digital Filter Characteristics
The digital filter is designed for fast settling, therefore it exhibits very little in-band attenuation. The filter
attenuation is 1.040 dB at 50 kHz when sampling at 100 kSps.
Figure 24. CS5571 Digital Filter Response (DC to fs/2)
Figure 25. CS5571 Digital Filter Response (DC to 10 kHz)
Figure 26. CS5571 Digital Filter Response (DC to 4fs)
-1.50
-1.25
-1.00
-0.75
-0.50
-0.25
0.00
0 10k 20k 30k 40k 50k
Frequency (Hz)
-0.0414 dB
-0.1660 dB
-0.3740 dB
-0.6660 dB
-1.040 dB
fs = 100 kSps
-0.05
-0.04
-0.03
-0.02
-0.01
0.00
0 2k 4k 6k 8k 10k
Frequency (Hz)
-0.001650 dB
-0.00700 dB
-0.01490 dB
-0.02643 dB
-0.04140 dB
fs = 100 kSps
-120
-100
-80
-60
-40
-20
0
0 100k 200k 300k 400k
Frequency (Hz)
fs = 100 kSps