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STM32L082CZ bảng dữ liệu(PDF) 94 Page - STMicroelectronics

tên linh kiện STM32L082CZ
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, AES
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STM32L082CZ bảng dữ liệu(HTML) 94 Page - STMicroelectronics

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Electrical characteristics
STM32L082xx
94/132
DS10688 Rev 7
Figure 26. Typical connection diagram using the ADC
1. Refer to Table 61: ADC characteristics for the values of RAIN and CADC.
2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
pad capacitance (refer to Table 57: I/O static characteristics). A high Cparasitic value downgrades
conversion accuracy. To remedy this, fADC must be reduced.
3. Refer to Table 57: I/O static characteristics for the value of Ilkg.
4. Refer to Figure 9: Power supply scheme.
General PCB design guidelines
Power supply decoupling should be performed as shown in Figure 27 or Figure 28,
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 27. Power supply and reference decoupling (VREF+ not connected to VDDA)
MSv67871V3
Sample-and-hold ADC converter
Converter
Cparasitic
(2)
Ilkg
(3)
CADC
VDDA
(4)
RAIN
(1)
VAIN
RADC
VREF+
(4)
VSSA
I/O
analog
switch
Sampling
switch with
multiplexing
VSS
VSS
MS39601V1
VREF+
STM32Lxx
VDDA
VSSA / VREF–
1 μF // 100 nF
1 μF // 100 nF



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