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STM32H742VG bảng dữ liệu(PDF) 285 Page - STMicroelectronics

tên linh kiện STM32H742VG
Giải thích chi tiết về linh kiện  32-bit Arm® Cortex®-M7 480MHz MCUs, up to 2MB Flash, up to 1MB RAM, 46 com. and analog interfaces
PDF  357 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STM32H742VG bảng dữ liệu(HTML) 285 Page - STMicroelectronics

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DS12110 Rev 7
285/357
STM32H742xI/G STM32H743xI/G
Electrical characteristics (rev V)
322
Figure 92. ADC accuracy characteristics (12-bit resolution)
1. Example of an actual transfer curve.
2. Ideal transfer curve.
3. End point correlation line.
4. ET = Total Unadjusted Error: maximum deviation between the actual and the ideal transfer curves.
EO = Offset Error: deviation between the first actual transition and the first ideal one.
EG = Gain Error: deviation between the last ideal transition and the last actual one.
ED = Differential Linearity Error: maximum deviation between actual steps and the ideal one.
EL = Integral Linearity Error: maximum deviation between any actual transition and the end point
correlation line.
Figure 93. Typical connection diagram using the ADC
1. Refer to Table 184 for the values of RAIN, RADC and CADC.
2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
pad capacitance (roughly 5 pF). A high Cparasitic value downgrades conversion accuracy. To remedy this,
fADC should be reduced.
ai14395c
EO
EG
1L SBIDEAL
4095
4094
4093
5
4
3
2
1
0
7
6
1
2
3
456
7
4093 4094 4095 4096
(1)
(2)
ET
ED
EL
(3)
VDDA
VSSA
V REF+
4096
(or
depending on package)]
V DDA
4096
[1LSB IDEAL=
ai17534b
STM32
VDD
AINx
IL±1 μA
0.6 V
VT
RAIN(1)
Cparasitic
VAIN
0.6 V
VT
RADC(1)
CADC(1)
12-bit
converter
Sample and hold ADC
converter



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