HD6432633 Datasheet, PDF (935/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

Influences on Absolute Precision: Adding capacitance results in coupling with GND, and
therefore noise in GND may adversely affect absolute precision. Be sure to make the connection
to an electrically stable GND such as AVSS.
Care is also required to insure that filter circuits do not communicate with digital signals on the
mounting board, so acting as antennas.
Sensor output
impedance
Up to 5 kΩ
Sensor input
Low-pass
filter C
Up to 0.1 µF
H8S/2633 Series _{A/D converter}
equivalent circuit
10 kΩ
C_in =
15 pF
20 pF
Figure 19-11 Example of Analog Input Circuit
881