STM32F103C4 datasheet(73/90 Pages) STMICROELECTRONICS

부품명	STM32F103C4

상세설명	Low-density performance line, ARM-based 32-bit MCU with 16 or32 KB Flash, USB

PDF	90 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

Logo

73 / 90 page

STM32F103x4, STM32F103x6

Electrical characteristics

Doc ID 15060 Rev 6

73/90

Figure 35.

Typical connection diagram using the ADC

Refer to Table 46 for the values of RAIN, RADC and CADC.

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 inFigure 36 or Figure 37,

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 36.

Power supply and reference decoupling (VREF+ not connected to VDDA)

The VREF+ input is available only on the TFBGA64 package.

ai14150c

STM32F103xx

VDD

AINx

IL±1 µA

0.6 V

RAIN(1)

Cparasitic

VAIN

0.6 V

RADC(1)

12-bit

converter

CADC(1)

Sample and hold ADC

converter

STM32F103C4 데이터시트(PDF) 73 Page - STMicroelectronics