STM32F030XC(2015) View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STM32F030XC
(Rev.:2015)
(Rev.:2015)
STMicroelectronics
STM32F030XC Datasheet PDF : 96 Pages
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Electrical characteristics
STM32F030x4/6/8/C
Table 50. ADC characteristics (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
tSTAB(2) Power-up time
tCONV(2)
Total conversion time
(including sampling time)
fADC = 14 MHz
0
0
1
1
-
18
14 to 252 (tS for sampling +12.5 for
successive approximation)
μs
μs
1/fADC
1. During conversion of the sampled value (12.5 x ADC clock period), an additional consumption of 100 μA on IDDA and 60 μA
on IDD should be taken into account.
2. Guaranteed by design, not tested in production.
EqRuaAtINio<n-f-1-A---:D---CR-----×A---I-CN-----A-m--D--T-aC---Sx--×---f--lo--n--r-(-m--2---N-u---l-+-a--2---) – RADC
The formula above (Equation 1) is used to determine the maximum external impedance
allowed for an error below 1/4 of LSB. Here N = 12 (from 12-bit resolution).
Ts (cycles)
Table 51. RAIN max for fADC = 14 MHz
tS (μs)
1.5
0.11
7.5
0.54
13.5
0.96
28.5
2.04
41.5
2.96
55.5
3.96
71.5
5.11
239.5
17.1
1. Guaranteed by design, not tested in production.
RAIN max (kΩ)(1)
0.4
5.9
11.4
25.2
37.2
50
NA
NA
Symbol
Parameter
Table 52. ADC accuracy(1)(2)(3)
Test conditions
Typ
Max(4)
Unit
ET Total unadjusted error
EO Offset error
EG Gain error
ED Differential linearity error
EL Integral linearity error
fPCLK = 48 MHz,
fADC = 14 MHz, RAIN < 10 kΩ
VDDA = 2.7 V to 3.6 V
TA = −40 to 85 °C
±3.3
±4
±1.9
±2.8
±2.8
±3
LSB
±0.7
±1.3
±1.2
±1.7
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-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 ΣIINJ(PIN) in Section 6.3.14 does not affect the ADC
accuracy.
74/96
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