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1.8 A/D Converter Characteristics
Table 1-25. A/D Converter Characteristics (EV
Parameter
Resolution
Note 1
Overall error
Quantization error
Conversion time
Sampling time
Note 1
Zero-scale error
Note 1
Full-scale error
Note 3
Integral linearity error
Note 3
Differential linearity error
Analog input voltage
AV
power supply current
DD
ADTRG high-level width
ADTRG low-level width
Notes 1.
Excluding quantization error (±0.05% FSR).
2.
The conversion clock indicates the number of clocks set by the ADM1 register.
3.
Excluding quantization error (±0.5LSB).
Remark
LSB: Least Significant Bit
FSR: Full Scale Range
%FSR indicates the ratio to the full-scale value.
ADTRG (Input)
Parameter
Analog input capacitance
Allowable signal source impedance
CHAPTER 1 PRODUCT SPECIFCATIONS
= AV
DD
Symbol
Conditions
−
−
−
t
CONV
3 × conversion clock
t
SAMP
−
−
−
−
V
WASN
AI
DD
t
WAIH
t
WAIL
Figure 1-30. A/D Converter Characteristics
< t
W AIH
Figure 1-31. Equivalent Circuit of Analog Input Pins
0.5 to 0.8 kΩ
ANI0-ANI7
15 pF
Table 1-26. Analog Input Pin Specifications
Symbol
−
−
User's Manual A19069EJ2V0UM
= AV
= 3.0 to 3.6 V, EV
DD
REFP
MIN.
TYP.
10
2.00
Note 2
/16
AV
REFM
500
500
>
< t
>
WAIL
1 MΩ
MIN.
= AV
= AV
= 0 V)
SS
SS
REFM
MAX.
Unit
bit
± 0.49
%FSR
± 1/2
LSB
μ
10
s
ns
± 0.49
%FSR
± 0.49
%FSR
± 4
LSB
± 4
LSB
AV
V
REFP
10
mA
ns
ns
MAX.
Unit
15
pF
k Ω
1
49
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