Cirrus Logic CS5560 - Manual (Page 23)

CS5560
DS713PP2 23
5/4/09
3.9 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 25 kHz when sampling at 50 kSps.
Figure 19. CS5560 Digital Filter Response (DC to fs/2)
Figure 20. CS5560 Digital Filter Response (DC to 5 kHz)
Figure 21. CS5560 Digital Filter Response (DC to 4fs)
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0 5k 10k 15k 20k 25k
Frequency (Hz)
Attenuation
(dB)
-0.0414 dB
-0.166 dB
-0.3725 dB
-0.664 dB
-1.040 dB
fs = 50 kSps
Frequency (Hz)
-0.001646 dB
-0.00663 dB
-0.0149 dB
-0.0262 dB
-0.0414 dB
fs = 50 kSps
fs = 50 kSps