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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
www.st.com
