ST STM32 Application Note

DocID15067 Rev 3 7/49
AN2834 ADC internal principle
48
Figure 2. Sample state
1. Sample state: capacitors are charging to V
IN
voltage. Sa switched to V
IN
, Sb switch closed during sampling
time.
Figure 3. Hold state
1. Hold state: the input is disconnected, capacitors hold input voltage. Sb switch is open, then S1-S11
switched to ground and Sa switched to V
REF
.
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ST STM32 Specifications

General

Series	STM32
Category	Microcontrollers
Core	ARM Cortex-M0, Cortex-M0+, Cortex-M3, Cortex-M4, Cortex-M7, Cortex-M33
Clock Speed	Up to 480 MHz
GPIO Pins	Up to 144
Communication Interfaces	I2C, SPI, USART, USB, CAN, Ethernet
Package Types	LQFP, BGA, WLCSP
ADC Resolution	12-bit, 16-bit (varies by series)
DAC Resolution	12-bit (varies by series)
Operating Temperature	-40°C to +85°C or +105°C