Cirrus Logic CS4271 - Manual (Page 16)

CS4271
16 DS592F1
ADC DIGITAL FILTER CHARACTERISTICS
(Note 17)
Notes: 15. The filter frequency response scales precisely with Fs.
16. Response shown is for Fs equal to 48 kHz. Filter characteristics scale with Fs.
17. Plots of this data are contained in the “Appendix” on page 47. See Figure 45 through Figure 56.
Parameter Symbol Min Typ Max Unit
Single Speed Mode
Passband (-0.1 dB). (Note 15) 0 - 0.47 Fs
Passband Ripple. - - ±0.035 dB
Stopband. (Note 15) 0.58 - - Fs
Stopband Attenuation. -95 - - dB
Group Delay. t
gd
- 12/Fs - s
Double Speed Mode
Passband (-0.1 dB). (Note 15) 0 - 0.45 Fs
Passband Ripple. - -
±0.035
dB
Stopband. (Note 15) 0.68 - - Fs
Stopband Attenuation. -92 - - dB
Group Delay. t
gd
- 9/Fs - s
Quad Speed Mode
Passband (-0.1 dB). (Note 15) 0 - 0.24 Fs
Passband Ripple. - -
±0.035
dB
Stopband. (Note 15) 0.78 - - Fs
Stopband Attenuation. -97 - - dB
Group Delay. t
gd
- 5/Fs - s
High Pass Filter Characteristics
Frequency Response -3.0 dB.
-0.13 dB.
(Note 16)
- 1
20
-
- Hz
Hz
Phase Deviation @ 20 Hz. (Note 16) - 10 - Deg
Passband Ripple. - - 0 dB
Filter Settling Time. 10
5
/Fs s