HD64F3337YCP16V Datasheet, PDF (384/749 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

15.6.6 Effect on Absolute Accuracy
Attaching an external capacitor creates a coupling with ground, so if there is noise on the ground
line, it may degrade absolute accuracy. The capacitor must be connected to an electrically stable
ground, such as AV_SS.
If a filter circuit is used, be careful of interference with digital signals on the same board, and
make sure the circuit does not act as an antenna.
Sensor output
impedance,
up to 10 kΩ
Sensor input
Low-pass
filter C,
up to 0.1 µF
H8/3337 Series
or H8/3397
Series chip
Equivalent circuit of A/D
converter
10 kΩ
C_in =
15 pF
20 pF
Note: Figures are reference values.
Figure 15.10 Example of Analog Input Circuit
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