CS5581

22

DS796A1

8/21/07

15:56

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 200 kSps.

Figure 11. CS5581 Spectral Response (DC to fs/2)

Figure 12. CS5581 Spectral Response (DC to 20 kHz)

Figure 13. CS5581 Spectral Response (DC to 8fs)

-0.30

-0.25

-0.20

-0.15

-0.10

-0.05

0.00

0

20k

40k

60k

80k

100k

Frequency (Hz)

-0.01049 dB

-0.16813 dB

-0.26347 dB

fs = 200 kSps

-0.04206 dB

-0.09443 dB

-0.015

-0.01

-0.005

0.00

0

5k

10k

15k

20k

Frequency (Hz)

-0.002622 dB

-0.005901 dB

-0.01049 dB

fs = 200 kSps

-0.006283 dB

-120

-100

-80

-60

-40

-20

0

0

400k

800k

1.2M

1.6M

Frequency (Hz)

fs = 200 kSps