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STM32L462CEU6 bảng dữ liệu(PDF) 136 Page - STMicroelectronics

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STM32L462CEU6 bảng dữ liệu(HTML) 136 Page - STMicroelectronics

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Electrical characteristics
STM32L462CE STM32L462RE STM32L462VE
136/198
DocID029969 Rev 1
6.3.17
Analog-to-Digital converter characteristics
Unless otherwise specified, the parameters given in Table 63 are preliminary values derived
from tests performed under ambient temperature, fPCLK frequency and VDDA supply voltage
conditions summarized in Table 20: General operating conditions.
Note:
It is recommended to perform a calibration after each power-up.
Table 63. 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
-
-
80
MHz
Range 2
-
-
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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