MT88L85
VDD
St/GT
R1
ESt
VDD
St/GT
R1
ESt
tGTP = (RPC1) In [VDD / (VDD-VTSt)]
tGTA = (R1C1) In (VDD/VTSt)
RP = (R1R2) / (R1 + R2)
C1
R2
a) decreasing tGTP; (tGTP < tGTA)
tGTP = (R1C1) In [VDD / (VDD-VTSt)]
tGTA = (RpC1) In (VDD/VTSt)
RP = (R1R2) / (R1 + R2)
C1
R2
b) decreasing tGTA; (tGTP > tGTA)
Figure 6 - Guard Time Adjustment
Data Sheet
7
Zarlink Semiconductor Inc.