Instruction Manual

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

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

Passband Ripple

- - 0.15 dB

Phase Deviation @ 20 Hz

-5.3-Deg

Filter Settling Time (Note 10)

/Fs

-s