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