STM32F101X6_08 STMICROELECTRONICS [STMicroelectronics], STM32F101X6_08 Datasheet - Page 60

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STM32F101X6_08

Manufacturer Part Number
STM32F101X6_08
Description
Access line, advanced ARM-based 32-bit MCU with Flash memory, six 16-bit timers, ADC and seven communication interfaces
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
Electrical characteristics
60/74
Table 44.
1. ADC DC accuracy values are measured after internal calibration.
2. Better performance could be achieved in restricted V
3. Data based on characterization, not tested in production.
4. ADC Accuracy vs. Negative Injection Current: Injecting negative current on any of the standard (non-
Figure 27. ADC accuracy characteristics
Symbol
4095
4094
4093
robust) analog input pins should be avoided as this significantly reduces the accuracy of the conversion
being performed on another analog input. It is recommended to add a Schottky diode (pin to ground) to
standard analog pins which may potentially inject negative current.
Any positive injection current within the limits specified for I
affect the ADC accuracy.
EO
EG
ED
ET
EL
7
6
5
4
3
2
1
0
V
SSA
[1LSB
1
Total unadjusted error
Offset error
Gain error
Differential linearity error
Integral linearity error
E
O
IDEAL
ADC accuracy
2
=
V
4096
3
REF+
Parameter
(3)
(3)
4
(or
V
5
1 LSB
4096
DDA
E
(1) (2)
6
T
depending on package)]
IDEAL
(3)
(4)
E
7
L
(3)
(2)
f
f
V
Measurements made after
ADC calibration
E
PCLK2
ADC
DDA
D
4093 4094 4095 4096
= 14 MHz, R
(3)
= 2.4 V to 3.6 V
= 56 MHz,
Test conditions
DD
(1)
, frequency, V
INJ(PIN)
E
G
V
AIN
DDA
and ΣI
< 10 kΩ ,
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
E
between the actual and the ideal transfer curves.
E
transition and the first ideal one.
E
transition and the last actual one.
E
between actual steps and the ideal one.
E
between any actual transition and the end point
correlation line.
T
O
G
D
L
=Total Unadjusted Error: maximum deviation
=Integral Linearity Error: maximum deviation
REF
=Offset Error: deviation between the first actual
=Gain Error: deviation between the last ideal
=Differential Linearity Error: maximum deviation
INJ(PIN)
and temperature ranges.
in
±1.5
±1.5
±1.5
Typ
±2
±1
Section 5.3.12
Max
STM32F101xx
±2.5
±5
±3
±2
±3
(3)
does not
Unit
LSB
ai14395b

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