This presentation gives an intuitive understanding of JTOL. Sample JTOL curves. Change of slope

1. JTOL derivation

2. • Look at the starting equation to derive
• It is Փin-Փck < timing margin

4. • Change in slope occurs where the zero occurs
• The numerator is same as LG(s)
• That is why the graphs looks familiar

5. Sample JTOL TT -45C Min V

6. Sample JTOL TT -45C Max V

7. • Side by side comparison of TT, -45C, MinV vs MaxV
Margin is similar until 15MHz, but then it drops