Cirrus Logic CS42L55 - Manual (Page 13)

DS773F1 13
CS42L55
ADC DIGITAL FILTER CHARACTERISTICS
Notes:
8. Response is clock-dependent and will scale with Fs. Note that the response plots ( Figures 27 to 30 on
page 70 ) have been normalized to Fs and can be de-normalized by multiplying the X-axis scale by Fs.
HPF parameters are for Fs = 48 kHz.
9. Characteristics are based on the default setting in register “HPF Control (Address 09h)” on page 47 .
10. Settling time decreases at higher corner frequency settings.
Parameter (Note 8) Min Typ Max Unit
Frequency Response (20 Hz to 20 kHz) -0.07 - +0.02 dB
Passband to -0.05 dB corner
to -3 dB corner
-
- 0.421
0.495 -
- Fs
Fs
Stopband 0.52 - - Fs
Stopband Attenuation 33 - - dB
Total Group Delay - 7.6/Fs - s
High-Pass Filter Characteristics (48 kHz Fs) (Note 9)
Passband to -3.0 dB corner
to -0.05 dB corner
-
- 1.87
17.15
-
- Hz
Hz
Passband Ripple - - 0.15 dB
Phase Deviation @ 20 Hz - 5.3 - Deg
Filter Settling Time (Note 10) - 10 5 /Fs - s