December 2012

Doc ID 023945 Rev 1

1/28

AN4207

Application note

Getting started with STM32F37x/38x SDADC (Sigma-Delta ADC)

Introduction

The STM32F37x series of microcontrollers combines a 32-bit ARM Cortex-M4 core with a

DSP and FPU instructions running at 72 MHz with advanced analog peripherals.

This series introduces the combination of a Cortex-M4 core with a precise 16-bit Sigma-

Delta ADC.

This document outlines the main features of the SDADC and shows how the SDADC can be

used in various application cases. By way of example, four application cases are presented

in this document:

1.

Temperature measurement using PT100

2.

Pressure measurement using MPX2102A

3.

Wave recorder

4.

ElectroCardioGram (ECG) acquisition

To help you get started quickly, the four application cases are implemented in C language

and are available as part of the STM32F37x DSP and standard peripherals library package

stm32f37x_dsp_stdperiph_lib and the STM32373C-EVAL demonstration firmware package

stm32373c-eval_fw

Please note that this document is not intended to replace the Sigma-Delta Analog to Digital

Converter (SDADC) section in the STM32F37xx/STM32F38xx reference manual RM0313.

All values given in this document are guidance only. Please refer to the related datasheet to

get guaranteed and up-to-date values.

Table 1.

Applicable products

Type

Part numbers

Microcontrollers

STM32F37X, STM32F38x

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