Datasheet

78K0/Kx2-L CHAPTER 12 A/D CONVERTER
R01UH0028EJ0400 Rev.4.00 433
Sep 27, 2010
(11) Internal equivalent circuit
The equivalent circuit of the analog input block is shown below.
Figure 12-24. Internal Equivalent Circuit of ANIn Pin
ANIn
C1 C2
R1
Table 12-9. Resistance and Capacitance Values of Equivalent Circuit (Reference Values)
AVREF Mode R1 C1 C2
Standard 5.2 kΩ
High-speed 2 7.8 kΩ
4.0 V ≤ AVREF ≤ 5.5 V
High-speed 1 5.2 kΩ
Standard 18.6 kΩ 2.7 V ≤ AVREF < 4.0 V
High-speed 2 7.8 kΩ
1.8 V ≤ AVREF < 4.0 V Low-voltage 169.8 kΩ
8 pF 6.3 pF
Remarks 1. The resistance and capacitance values shown in Table 12-9 are not guaranteed values.
2. n = 0 to 10 (it depends on products)
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