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STM32F102X8 데이터시트(PDF) 68 Page - STMicroelectronics

부품명 STM32F102X8
상세설명  Medium-density USB access line, ARM-based 32b MCU with 64/128KB Flash, USB FS, 6 timers, ADC & 8 com. interfaces
PDF  80 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F102X8 데이터시트(HTML) 68 Page - STMicroelectronics

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Electrical characteristics
STM32F102x8, STM32F102xB
68/80
DocID15056 Rev 5
Figure 31. ADC accuracy characteristics
Figure 32. Typical connection diagram using the ADC
1. Refer to Table 47 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 7 pF). A high Cparasitic value will downgrade conversion accuracy. To remedy
this, fADC should be reduced.
EO
EG
1LSBIDEAL
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
ET=Total u nadjusted er ror: 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 er ror: 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.
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
ai15497
VDDA
4096
[1LSBIDEAL =
ai14974b
STM32F102
VDD
AINx
IL±1 µA
0.6 V
VT
RAIN(1)
Cparasitic
VAIN
0.6 V
VT
RADC(1)
12-bit
converter
CADC(1)
Sample and hold ADC
converter



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