Cirrus Logic CS42L73 - Manual (Page 127)

DS882F1 127
CS42L73
8.2 Analog Mic/Line ADC and Digital Mic Input Path Attributes
8.2.1 Input Path Digital LPF Response
-6 -4 -2 0 2 4 6 8 10 12
-6
-4
-2
0
2
4
6
8
10
12
PGA Setting (dB)
O
ut
pu
t Lev
el
(
dB
)
pga_inl_mic Supply Corner, Chip 41
ChA
ChB
-6 -4 -2 0 2 4 6 8 10 12
0.45
0.46
0.47
0.48
0.49
0.5
0.51
0.52
0.53
0.54
0.55
PGA Setting (dB)
S
tep (
dB
)
pga_dnl_mic Supply Corner, Chip 41
ChA
ChB
Figure 46. PGA + Preamp (+20 dB) DNL Figure 47. PGA + Preamp (+20 dB) INL
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
−0.25
−0.2
−0.15
−0.1
−0.05
0
0.05
0.1
0.15
0.2
0.25
Frequency (normalized to Fs)
Magnitude (dB)
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
−100
−90
−80
−70
−60
−50
−40
−30
−20
−10
0
Frequency (normalized to Fs)
Magnitude (dB)
Figure 48. Input Path LPF Frequency Response Figure 49. Input Path LPF Stopband Rejection