Cirrus Logic CS4354 - Manual (Page 20)

20 DS895F2
CS4354
5. COMBINED DIGITAL AND ON-CHIP ANALOG FILTER RESPONSE PLOTS
0.4 0.5 0.6 0.7 0.8 0.9 1
−120
−100
−80
−60
−40
−20
0
Single−Speed Stopband Rejection
Frequency(normalized to Fs)
Amplitude(dB)
0.4 0.42 0.44 0.46 0.48 0.5 0.52 0.54 0.56 0.58 0.6
−120
−100
−80
−60
−40
−20
0
Single−Speed Transition Band
Frequency(normalized to Fs)
Amplitude(dB)
Figure 10. Single-Speed Stopband Rejection Figure 11. Single-Speed Transition Band
0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55
−10
−9
−8
−7
−6
−5
−4
−3
−2
−1
0
Single−Speed Transition Band Detail
Frequency(normalized to Fs)
Amplitude(dB)
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
−0.06
−0.04
−0.02
0
0.02
0.04
0.06
Single−Speed Passband Ripple
Frequency(normalized to Fs)
Amplitude(dB)
Figure 12. Single-Speed Transition Band (detail) Figure 13. Single-Speed Passband Ripple
0.4 0.5 0.6 0.7 0.8 0.9 1
−120
−100
−80
−60
−40
−20
0
Double−Speed Stopband Rejection
Frequency(normalized to Fs)
Amplitude(dB)
0.4 0.42 0.44 0.46 0.48 0.5 0.52 0.54 0.56 0.58 0.6
−120
−100
−80
−60
−40
−20
0
Double−Speed Transition Band
Frequency(normalized to Fs)
Amplitude(dB)
Figure 14. Double-Speed Stopband Rejection Figure 15. Double-Speed Transition Band