STM32F103VF STMicroelectronics, STM32F103VF Datasheet - Page 102

• Manufacturer Part Number: STM32F103VF
• Description: Mainstream Performance line, ARM Cortex-M3 MCU with 768 Kbytes Flash, 72MHz CPU, motor control, USB and CAN
• Manufacturer: STMicroelectronics

Specifications of STM32F103VF

• Conversion Range: 0 to 3.6 V
• Supported Peripherals: timers, ADCs, DAC, SDIO, I2Ss, SPIs, I2Cs and USARTs
• Systick Timer: a 24-bit downcounter

Electrical characteristics
102/120
Equation 1: R
The formula above
allowed for an error below 1/4 of LSB. Here N = 12 (from 12-bit resolution).
Table 63.
1. Guaranteed by design, not tested in production.
Table 64.
1. ADC DC accuracy values are measured after internal calibration.
2. ADC Accuracy vs. Negative Injection Current: Injecting negative current on any of the standard (non-
3. Based on characterisation, not tested in production.
1.5
7.5
13.5
28.5
41.5
55.5
71.5
239.5
Symbol
R
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
AIN
<
--------------------------------------------------------------- - R
f
ADC
T
Total unadjusted error
Offset error
Gain error
Differential linearity error
Integral linearity error
s
R
(cycles)
ADC accuracy - limited test conditions
×
AIN
AIN
C
ADC
Parameter
max for f
max formula
(Equation
T
S
×
ln
(
2
ADC
N
1) is used to determine the maximum external impedance
+
Doc ID 16554 Rev 3
0.11
0.54
0.96
2.04
2.96
3.96
5.11
17.1
2
= 14 MHz
)
–
f
f
V
T
Measurements made after
ADC calibration
V
ADC
PCLK2
ADC
A
DDA
REF+
= 25 °C
= 14 MHz, R
(1)
= 3 V to 3.6 V
t
= V
S
= 56 MHz,
Test conditions
(µs)
DDA
INJ(PIN)
AIN
(1)(2)
and ΣI
< 10 kΩ ,
STM32F103xF, STM32F103xG
INJ(PIN)
0.4
5.9
11.4
25.2
37.2
50
NA
NA
in
±1.3
±0.5
±0.7
±0.8
Typ
±1
Section 5.3.14
R
AIN
max (kΩ)
Max
±1.5
±1.5
±1.5
±1
±2
(3)
does not
Unit
LSB