STM32F103VC データシートの表示（PDF） - STMicroelectronics
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STM32F103VC Datasheet PDF : 123 Pages
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Electrical characteristics
STM32F103xC, STM32F103xD, STM32F103xE
Table 61.
Symbol
ADC accuracy(1) (2)(3)
Parameter
Test conditions
Typ Max(4) Unit
ET Total unadjusted error
EO Offset error
EG Gain error
ED Differential linearity error
EL Integral linearity error
fPCLK2 = 56 MHz,
fADC = 14 MHz, RAIN < 10 k,
VDDA = 2.4 V to 3.6 V
Measurements made after
ADC calibration
±2
±1.5
±1.5
±1
±1.5
±5
±2.5
±3
LSB
±2
±3
1. ADC DC accuracy values are measured after internal calibration.
2. Better performance could be achieved in restricted VDD, frequency, VREF and temperature ranges.
3. ADC Accuracy vs. Negative Injection Current: Injecting negative current on any of the standard (non-
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 IINJ(PIN) and IINJ(PIN) in Section 5.3.13 does not
affect the ADC accuracy.
4. Based on characterization, not tested in production.
Figure 53. ADC accuracy characteristics
4095
4094
4093
7
6
5
4
3
2
1
[1LSBIDEAL
=VREF+
4096
(or
VDDA depending
4096
on
package)]
EG
(2)
ET
(3)
(1)
EO
EL
ED
1 LSBIDEAL
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
ET=Total Unadjusted Error: maximum deviation
between the actual and the ideal transfer curves.
EO=Offset Error: deviation between the first actual
transition and the first ideal one.
EG=Gain Error: deviation between the last ideal
transition and the last actual one.
ED=Differential Linearity Error: maximum deviation
between actual steps and the ideal one.
EL=Integral Linearity Error: maximum deviation
between any actual transition and the end point
correlation line.
0
1234567
VSSA
4093 4094 4095 4096
VDDA
ai14395b
100/123
Doc ID 14611 Rev 7
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