STM32F103T4 STMicroelectronics, STM32F103T4 Datasheet - Page 71

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STM32F103T4

Manufacturer Part Number
STM32F103T4
Description
Mainstream Performance line, ARM Cortex-M3 MCU with 16 Kbytes Flash, 72 MHz CPU, motor control, USB and CAN
Manufacturer
STMicroelectronics
Datasheet

Specifications of STM32F103T4

Conversion Range
0 to 3.6 V
Peripherals Supported
timers, ADC, SPIs, I2Cs and USARTs

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STM32F103x4, STM32F103x6
Table 49.
1. ADC DC accuracy values are measured after internal calibration.
2. Better performance could be achieved in restricted V
3. ADC Accuracy vs. Negative Injection Current: Injecting negative current on any of the standard (non-
4. Based on characterization, not tested in production.
Figure 34. ADC accuracy characteristics
4095
4094
4093
Symbol
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
E
Total unadjusted error
Offset error
Gain error
Differential linearity error
Integral linearity error
IDEAL
O
ADC accuracy
2
=
V
4096
3
REF+
Parameter
4
(or
V
5
1 LSB
4096
DDA
E
6
(1) (2) (3)
T
depending on package)]
IDEAL
Doc ID 15060 Rev 5
E
7
L
(2)
f
f
V
Measurements made after
ADC calibration
E
PCLK2
ADC
D
DDA
4093 4094 4095 4096
(3)
= 14 MHz, R
= 2.4 V to 3.6 V
= 56 MHz,
Test conditions
DD
(1)
, frequency and temperature ranges.
E
INJ(PIN)
G
V
DDA
AIN
and Σ I
< 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
=Offset Error: deviation between the first actual
=Gain Error: deviation between the last ideal
=Differential Linearity Error: maximum deviation
INJ(PIN)
Electrical characteristics
in
±1.5
±1.5
±1.5
Typ
±2
±1
Section 5.3.12
Max
±2.5
±3
±2
±5
±3
(4)
does not
ai14395b
Unit
LSB
71/87

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