ST AN3116 Application Note

About this manual

This document describes the advanced Analog-to-Digital Converter (ADC) modes available in STM32 microcontrollers. It covers independent modes for single ADC usage and dual modes for simultaneous operation of ADC1 and ADC2.

The note provides detailed descriptions and example applications for various modes, such as single-channel conversion, multichannel scanning, continuous conversion, and injected conversion. It also details complex dual modes like simultaneous, fast interleaved, and combined regular/injected modes to assist developers in optimizing measurements for tasks like motor control.

What's inside

• Independent Modes
• Single-channel, single conversion mode
• Multichannel (scan), single conversion mode
• Single-channel continuous conversion mode
• Multichannel (scan) continuous conversion mode
• Injected conversion mode
• Dual regular simultaneous mode
• Dual fast interleaved mode
• Dual slow interleaved mode
• Dual alternate trigger mode

Frequently asked questions

What is an example application for the single-channel, continuous conversion mode?

This mode can be used to monitor a battery voltage or regulate an oven temperature.

How many channels can the multichannel scan modes configure in a sequence?

You can configure any sequence of up to 16 channels successively.

What is an example application for the injected conversion mode?

It can be used in motor control applications where transistor switching generates noise that impacts ADC measurements.