
MB90360 Series
52
About the external impedance of analog input and its sampling time
A/D converter with sample and hold circuit. If the external impedance is too high to keep sufficient sampling
time, the analog voltage changed to the internal sample and hold capacitor is insufficient, adversely affecting
A/D conversion precision.
(Continued)
R
C
Analog input circuit model
Analog input
During sampling : ON
Comparator
MB90F362/T/S/TS, MB90F367/T/S/TS
R
C
4.5 V
≤
AV
CC
≤
5.5 V
4.0 V
≤
AV
CC
< 4.5 V
2.0 k
(Max)
8.2 k
(Max)
16.0 pF (Max)
16.0 pF (Max)
MB90362/T/S/TS, MB90367/T/S/TS, MB90V340A-101/102/103/104
R
C
4.5 V
≤
AV
CC
≤
5.5 V
4.0 V
≤
AV
CC
< 4.5 V
2.0 k
(Max)
8.2 k
(Max)
14.4 pF (Max)
14.4 pF (Max)
Note : The values are reference values.