APPLICATION NOTE
3
settle(1) = x1
{
1|
search
backward/End/level(1.01) !1
;
The goal functions to implement this are shown below as S1, S2, and S3, which are three components of
the Lagrangian polynomial. In the example shown, the Lagrangian components are evaluated at a
defined level of 1.01, which, when added together, will produce the settling time curve to 10 mV.
S1(1) = (1.01-y2)*(1.01-y3)*x1/((y1-y2)*(y1-y3))
{
1|Search backward /end/ LEVEL(1.01)
Search forward peak !1
Search backward peak !2
Search backward peak !3;
}
S2(1) = (1.01-y1)*(1.01-y3)*x2/((y2-y1)*(y2-y3))
{
1|Search backward /end/ LEVEL(1.01)
Search forward peak !1
Search backward peak !2
Search backward peak !3;
}
S3(1) = (1.01-y1)*(1.01-y2)*x3/((y3-y1)*(y3-y2))
{
1|Search backward /end/ LEVEL(1.01)
Search forward peak !1
Search backward peak !2
Search backward peak !3;
}
S105(1) = (1.005-y2)*(1.005-y3)*x1/((y1-y2)*(y1-y3))
{
1|Search backward /end/ LEVEL(1.005)
Search forward peak !1
Search backward peak !2
