Cirrus Logic CS4265 - Manual (Page 16)

16 DS657F3
CS4265
ADC DIGITAL FILTER CHARACTERISTICS
15. Filter response is guaranteed by design.
16. Response shown is for Fs = 48 kHz.
17. Response is clock-dependent and will scale with Fs. Note that the response plots (
Figures 30 to 41 ) are
normalized to Fs and can be de-normalized by multiplying the X-axis scale by Fs.
Parameter (Notes
15
,
17
) Symbol Min Typ Max Unit
Single-Speed Mode
Passband (-0.1 dB) 0 - 0.4896 Fs
Passband Ripple - - 0.035 dB
Stopband 0.5688 - - Fs
Stopband Attenuation 70 - - dB
Total Group Delay (Fs = Output Sample Rate) t
gd
- 12/Fs - s
Double-Speed Mode
Passband (-0.1 dB) 0 - 0.4896 Fs
Passband Ripple - - 0.025 dB
Stopband 0.5604 - - Fs
Stopband Attenuation 69 - - dB
Total Group Delay (Fs = Output Sample Rate) t
gd
- 9/Fs - s
Quad-Speed Mode
Passband (-0.1 dB) 0 - 0.2604 Fs
Passband Ripple - - 0.025 dB
Stopband 0.5000 - - Fs
Stopband Attenuation 60 - - dB
Total Group Delay (Fs = Output Sample Rate) 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