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STM32L443CC bảng dữ liệu(PDF) 145 Page - STMicroelectronics

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STM32L443CC bảng dữ liệu(HTML) 145 Page - STMicroelectronics

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DS11421 Rev 4
145/215
STM32L443CC STM32L443RC STM32L443VC
Electrical characteristics
185
6.3.18
Analog-to-Digital converter characteristics
Unless otherwise specified, the parameters given in Table 65 are preliminary values derived
from tests performed under ambient temperature, fPCLK frequency and VDDA supply voltage
conditions summarized in Table 21: General operating conditions.
Note:
It is recommended to perform a calibration after each power-up.
Table 65. ADC characteristics(1) (2)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDDA
Analog supply voltage
-
1.62
-
3.6
V
VREF+
Positive reference voltage
VDDA ≥ 2 V
2
-
VDDA
V
VDDA < 2 V
VDDA
V
VREF-
Negative reference
voltage
-VSSA
V
fADC
ADC clock frequency
Range 1
0.14
-
80
MHz
Range 2
0.14
-
26
fs
Sampling rate for FAST
channels
Resolution = 12 bits
-
-
5.33
Msps
Resolution = 10 bits
-
-
6.15
Resolution = 8 bits
-
-
7.27
Resolution = 6 bits
-
-
8.88
Sampling rate for SLOW
channels
Resolution = 12 bits
-
-
4.21
Resolution = 10 bits
-
-
4.71
Resolution = 8 bits
-
-
5.33
Resolution = 6 bits
-
-
6.15
fTRIG
External trigger frequency
fADC = 80 MHz
Resolution = 12 bits
-
-
5.33
MHz
Resolution = 12 bits
-
-
15
1/fADC
VCMIN
Input common mode
Differential mode
(VREF++
VREF-)/2
- 0.18
(VREF++
VREF-)/2
(VREF++
VREF-)/2
+ 0.18
V
VAIN (3)
Conversion voltage
range(2)
-0
-
VREF+
V
RAIN
External input impedance
-
-
-
50
kΩ
CADC
Internal sample and hold
capacitor
--
5
-
pF
tSTAB
Power-up time
-
1
conversion
cycle
tCAL
Calibration time
fADC = 80 MHz
1.45
µs
-116
1/fADC



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