Cirrus-logic CS5560 Instrukcja Użytkownika Pobierz pdf (Strona 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

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Cirrus-logic CS5560 Instrukcja Użytkownika Strona 23