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

2k4k

6k8k

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