Adc Filter Plots; Figure 32.Adc Stopband Rejection; Figure 33.Adc Transition Band; Figure 34.Adc Transition Band (Detail) - Cirrus Logic CS4244 Manual

7. ADC FILTER PLOTS

0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0 0.1 0.2 0.3
Figure 32. ADC Stopband Rejection
0
−1
−2
−3
−4
−5
−6
−7
−8
−9
−10
0.45 0.46 0.47 0.48
Figure 34. ADC Transition Band (Detail)
High Pass Filter Response (Fs
0
−0.5
−1
−1.5
−2
−2.5
−3
0 2 4 6
Figure 36. ADC HPF (48 kHz)
DS900F2
Stopband Rejection
0.4 0.5 0.6 0.7 0.8
Frequency (normalized to Fs)
Transition Band (Detail)
0.49 0.5 0.51 0.52 0.53 0.54
Frequency (normalized to Fs)
48kHz)
8 10 12 14 16 18
Frequency (Hz)
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0.4 0.42
0.9 1
0.05
0.04
0.03
0.02
0.01
0
−0.01
−0.02
−0.03
−0.04
−0.05
0.55 0 0.05
0
−0.5
−1
−1.5
−2
−2.5
−3
0 2
20
a s t o a d
0.44 0.46 0.48 0.5 0.52
Frequency (normalized to Fs)
Figure 33. ADC Transition Band
Passband Ripple
0.1 0.15 0.2 0.25 0.3 0.35
Frequency (normalized to Fs)
Figure 35. ADC Passband Ripple
g ass te espo se ( s 96 )
4 6 8 10 12
Frequency (Hz)
Figure 37. ADC HPF (96 kHz)
CS4244
0.54 0.56 0.58 0.6
0.4 0.45 0.5
14 16 18 20
59