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Chapter 1 Overview
I - 26
Electrical Characteristics
1-5-4 A/D Converter Characteristics *2
*1 Set the potential difference between VREF+ and VREF- over 2 V.
*2 The value is measured with A/D Converter, not with D/A Converter.
T
a
=-40
o
C to +85
o
C
V
DD
= 3.3 V V
SS
=0 V
MIN TYP MAX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Analog input leakage
current
*1
*1
Reference voltage pin
input leakage current
50 80 k
Ω
Ladder resistance R
ladd
V
DD
= 3.3 V 20
±
2
µ
A
±
10
unselected channel
V
ADIN
= 0 V to V
DD
Lader resistor OFF
V
REF-
<
V
REF+
<
V
DD
0.5
Reference voltage
Analog input voltage V
REF-
V
REF+
V
REF-
V
30.5
µ
s
V
DD
V
REF+
V
REF-
V
SS
T
AD
= 15.26
µ
s
A/D conversion time
Sampling time
T
AD
= 1.0
µ
s
T
AD
= 800 ns
T
AD
= 15.26
µ
s
2
3275
18
183
9.6
mV
Zero transition voltage
V
DD
= 3.3 V,V
SS
= 0 V
V
REF+
= 3.3 V,V
REF-
= 0 V
T
AD
= 800 ns
25 80
Full-scale transition
voltage
3220
Non-linerarity error
±
5
±
5
V
DD
= 3.3 V,V
SS
= 0 V
V
REF+
= 3.3 V,V
REF-
= 0 V
T
AD
= 15.26
µ
s
Differential non-linearity
error 2
V
DD
= 3.3 V,V
SS
= 0 V
V
REF+
= 3.3 V,V
REF-
= 0 V
T
AD
= 800 ns
Differential non-linearity
error 1
Unit
Bits
±
3
LSB
Rating
10
±
3
Parameter Symbol Conditions
Resolution
Non-linearity error 1