Characterizing Sampling Aperture of Clocked Comparators
Aperture Time for comparator
Testbench &Simulation with cadence spectre
Simple dynamic comparator
Testbench with a small servo loop
Script for optimization
Parameters for optimization
Opt goal: Minimum aperture_time
Opt constrain: power
Results comparation
parameters
Initial results
Opt results
wn_0
4.8u
6.82u
wn_1
4u
4.49u
wn_2
6.4u
4.57u
wn_3
4.8u
7.66u
wp_0
6.65u
3.05u
wp_1
3.2u
3.01u
wp_2
8u
3.14u
aperture_time(goal)
12.833ps
11.72ps
Iavg(constraint)
2.219mA
1.536mA
Results comparation
Results comparation(initial case)
Results comparation(optimal case)
Results comparation(optimal case)
Need to add constraint about bandwidth