C2000 Microcontroller Workshop - Analog-to-Digital Converter 6 - 1
Analog-to-Digital Converter and Comparator
Introduction
This module explains the operation of the analog-to-digital converter and comparator. The ADC
system consists of a 12-bit analog-to-digital converter with up to 16 analog input channels. The
analog input channels have a full range analog input of 0 to 3.3 volts or VREFHI/VREFLO
ratiometric. Two input analog multiplexers are available, each supporting up to 8 analog input
channels. Each multiplexer has its own dedicated sample and hold circuit. Therefore, sequential,
as well as simultaneous sampling is supported. The ADC system is start-of-conversion (SOC)
based where each independent SOCx (where x = 0 to 15) register configures the trigger source
that starts the conversion, the channel to convert, and the acquisition (sample) window size. Up
to 16 results registers are used to store the conversion values. Conversion triggers can be
performed by an external trigger pin, software, an ePWM or CPU timer interrupt event, or a
generated ADCINT1/2 interrupt.
Module Objectives
Module Objectives
Understand the operation of the
Analog-to-Digital converter (ADC)
and Comparator
Use the ADC to perform data acquisition
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