Introduction

STM32H7 Series MCUs embed three successive-approximation-register (SAR) ADCs with 16-bit resolution targetting

applications requiring high accuracy measurements and high data rates.

This application note describes the new features and performance figures of the 16-bit ADC.

It explains how the ADC performance varies under various conditions, and provides guidelines to exploit the full potential of the

STM32 16-bit ADC.

This document applies to the STM32H7 Series product lines listed in Table 1.

Table 1. Applicable products

Type Product lines

Microcontrollers

STM32H742

STM32H743

STM32H745

STM32H747

STM32H750 Value line

STM32H753

STM32H755

STM32H757

Getting started with the STM32H7 Series MCU 16-bit ADC

AN5354

Application note

AN5354 - Rev 1 - March 2020

For further information contact your local STMicroelectronics sales office.

www.st.com

1General information

This document applies to STM32H7 Series Arm®Cortex®-M7-based microcontrollers.

Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.

1.1 Reference documents

Table 2. Document references

Reference Documents

[1] • STM32H745/755 and STM32H747/757, reference manual (RM0399)

• STM32H742, STM32H743/753 and STM32H750 Value line, reference manual (RM0433)

[2]

• STM32H742/43 datasheet (DS12110)

• STM32H745 datasheet (DS12923)

• STM32H747 datasheet (DS12930)

• STM32H750 Value line datasheet (DS12556)

• STM32H753 datasheet (DS12117)

• STM32H755 datasheet (DS12919)

• STM32H757 datasheet (DS12931)

[3] How to get the best ADC accuracy in STM32 microcontrollers, application note (AN2834)

1.2 Acronyms and abbreviations

Table 3. Definition of terms

Term Definition

AUTDLY Auto-delayed conversion mode

DIFF Differential

DFSDM Digital filter for sigma delta modulators

DNL Differential non-linearity

ENOB Effective number of bits

GE Gain error

INL Integral non-linearity

OE Offset error

SE Single-ended

SAR Successive-approximation-register

SNR Signal-to-noise ratio

THD Total harmonic distortion

TUE Total unajusted error

AN5354

General information

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