STM32F302RBT7TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM32F302RBT7TR

ARM Cortex-M4F 32b MCU+FPU, up to 256KB Flash+48KB SRAM 4 ADCs, 2 DAC ch., 7 comp, 4 PGA, timers, 2.0-3.6 V operation

STMicroelectronics 

STM32F302xx/STM32F303xx

Electrical characteristics

Figure 33. Typical connection diagram using the ADC

RAIN(1)

AINx

VAIN

Cparasitic

6$$!

VT

0.6 V

VT

0.6 V

IL±1 μA

Sample and hold ADC

converter

RADC

12-bit

converter

CADC

-36

1. Refer to Table 66 for the values of RAIN.

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 11. The 10 nF capacitor

should be ceramic (good quality) and it should be placed as close as possible to the chip.

Doc ID 023353 Rev 5

111/133

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