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22.14 12-bit A/D Converter (ADC12A) Characteristics
Unless otherwise specified: V
DD
Item
VREFAn voltage range
A/D conversion clock frequency f
Sampling rate
*1
Integral nonlinearity
*2
Differential nonlinearity
Zero-scale error
Full-scale error
Analog input resistance
Analog input capacitance
A/D converter circuit current
*1 The Max. value is the value when the A/D conversion clock frequency f
*2 Integral nonlinearity is measured at the end point line.
*3 The error will be increased according to the potential difference between V
A/D converter current consumption-
power supply voltage characteristic
V
= V
, ADIN = V
/2, f
DD
REFA
REFA
SMP
400
350
300
250
200
150
100
50
0
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8
V
DD
S1C17W14/W16 TECHNICAL MANUAL
(Rev. 1.2)
= VREFAn = 1.8 to 3.6 V, V
= 0 V, Ta = -40 to 85 °C, ADC12_nTRG.SMPCLK[2:0] bits = 0x3 (7cycles)
SS
Symbol
Condition
V
REFA
CLK_ADC12A
f
SMP
INL
V
= VREFAn
*3
DD
DNL
V
= VREFAn
*3
DD
ZSE
V
= VREFAn
*3
DD
FSE
V
= VREFAn
*3
DD
R
ADIN
C
ADIN
I
V
= V
, ADIN = V
ADC
DD
REFA
= 50 ksps, Ta = 25 °C, Typ. value
= V
[V]
REFA
Seiko Epson Corporation
22 ELECTRICAL CHARACTERISTICS
V
Min.
DD
1.8
16
–
–
–
1.8 to 2.0 V
-2
2.0 to 3.6 V
-2
1.8 to 2.0 V
-2
2.0 to 3.6 V
-2
–
–
/2, f
= 50 ksps
–
REFA
SMP
= 1,000 kHz.
CLK_ADC12A
and VREFAn.
DD
Typ.
Max.
Unit
–
V
V
DD
–
1,100
kHz
–
50
ksps
–
LSB
±3
–
LSB
±3
–
3
mV
–
8
mV
–
3
mV
–
8
mV
–
4
kW
–
30
pF
360
540
µA
22-15
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