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STM32F101XC Datasheet(PDF) 90 Page - STMicroelectronics

Part # STM32F101XC
Description  High-density access line, ARM-based 32-bit MCU with 256 to 512 KB Flash, 9 timers, 1 ADC and 10 communication interfaces
PDF  106 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F101XC Datasheet(HTML) 90 Page - STMicroelectronics

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Electrical characteristics
STM32F101xC, STM32F101xD, STM32F101xE
90/106
Doc ID 14610 Rev 7
Figure 46.
Typical connection diagram using the ADC
1.
Refer to Table 53 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.
General PCB design guidelines
Power supply decoupling should be performed as shown in Figure 47 or Figure 48,
depending on whether VREF+ is connected to VDDA or not. The 10 nF capacitors should be
ceramic (good quality). They should be placed them as close as possible to the chip.
Figure 47.
Power supply and reference decoupling (VREF+ not connected to VDDA)
1.
VREF+ and VREF- inputs are available only on 100-pin packages.
ai14139d
STM32F10xxx
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
V REF+
STM32F10xxx
V DDA
V SSA/V REF-
1 µF // 10 nF
1 µF // 10 nF
ai14380b



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