September 2013

Doc ID 023727 Rev 3

1/22

AN4173

Application note

10-bit ADC - Configuration Guide for SPC56xBxx and

SPC56xCxx products

Introduction

The aim of this document is to clarify the usage of the ADC 10-bit SAR peripheral timing

parameters in order to help the user to find the best configuration to optimize the conversion

time and the quality/precision of the sampled signal considering its input impedance.

This document describes an application able to acquire sinusoidal signals of up to 500 kHz

using two DMA channels triggered by PIT and EOC signal.

The quality of the signal is estimated using an offline computation of the FFT of the sampled

values.

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