Digital Signal Processing Reference
In-Depth Information
C
1
V
in
+
+
V
out
R
1
−
R
2
R
3
Figure 12-21
Example active equalizer using a first-order high-pass filter.
5
4
Active CTLE
3
2
1
0
−
1
Passive CTLE
−
2
−
3
−
4
−
5
0
2
4
6
8
10
Frequency (GHz)
(a)
0.5
0.44
Passive CTLE
0.38
0.32
0.26
0.2
0.14
0.08
Active CTLE
0.02
−
0.04
−
0.1
0
2
4
6
8
10
Frequency (GHz)
(b)
Figure 12-22
Transfer function for the active equalizer: (a) magnitude; (b) phase.
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