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CHAPTER 13 A/D CONVERTER
User’s Manual U12697EJ3V0UM
Figure 13-21. Internal Equivalence Circuit of ANI0 to ANI7 Pins
Remark
n = 0 to 7
Table 13-2. Resistance and Capacitance Values for Equivalence Circuits (Reference Values)
V
DD0
R1
R2
C1
C2
C3
1.8 V
75 k
Ω
30 k
Ω
3 pF
4 pF
2 pF
2.7 V
12 k
Ω
8 k
Ω
3 pF
3 pF
2 pF
4.5 V
3 k
Ω
2.7 k
Ω
3 pF
1.4 pF
2 pF
Caution
The resistance and capacitance values in Table 13-2 cannot be guaranteed.
Figure 13-22. Example of Circuit When Signal Source Impedance Is High
Remark
n = 0 to 7
ANin
R1
R2
C1
C2
C3
<Sensor internal>
Sensor output
impedance
R0
C0
≤
0.1 F
µ
ANIn
Low pass filter
configured
R1
R2
<Microcontroller internal>
C1
C2
C3
Содержание mPD784225 Series
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