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STM32L072X8 bảng dữ liệu(PDF) 102 Page - STMicroelectronics

tên linh kiện STM32L072X8
Giải thích chi tiết về linh kiện  Ultra-low-power 32-bit MCU ARM-based Cortex-M0, up to 192KB Flash, 20KB SRAM, 6KB EEPROM, USB, ADC, DACs
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STM32L072X8 bảng dữ liệu(HTML) 102 Page - STMicroelectronics

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Electrical characteristics
STM32L072xx
102/147
DocID027100 Rev 3
Figure 31. Typical connection diagram using the ADC
1. Refer to Table 64: ADC characteristics 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 32 or Figure 33,
depending on whether VREF+ is connected to VDDA or not. The 10 nF capacitors should be
ceramic (good quality). They should be placed as close as possible to the chip.
Figure 32. Power supply and reference decoupling (VREF+ not connected to VDDA)



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