Renesas SH7641 - Manual (Page 867)

Section 21 A/D Converter
Rev. 4.00 Sep. 14, 2005 Page 817 of 982
REJ09B0023-0400
0.01 µF 10 µF
AV
CC
AN0 to AN7
AV
SS
This LSI
* 1
1.
100 Ω
0.1 µF
Note: Value are referene value.
* 2 R
in
2. R
in
: input impedance
Figure 21.7 Example of Analog Input Protection Circuit
AN0 to AN7
3 k Ω
20 pF
to A/D converter
Note: Value are referene value.
Figure 21.8 Analog Input Pin Equivalent Circuit
Sensor input
This LSI
Sensor output impeddance
Low-pass filter
C to 0.1 µF
Up to 3 k Ω
Cin =
15pF
20pF
3 k Ω
Note: Value are referene value.
A/D converter
equivalent circuit
Figure 21.9 Example of Analog Input Circuit