SPRUJ17I March 2022 – August 2025 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
While each ADC does not have dual S+H circuits, achieving simultaneous sampling is accomplished by setting the SOC triggers on two or more ADC modules to use the same trigger source. The following example demonstrates simultaneous sampling on ADCs based on an ePWM3 event. are sampled. An acquisition window of 20 SYSCLK cycles is used, but different durations are possible.
When the ePWM3 trigger is received, all ADCs begin converting in parallel immediately. All results are stored in the ADCRESULT0 register for each ADC. Note that this assumes that all ADCs are idle when the trigger is received. If one or more ADCs is busy, the samples do not happen at exactly the same time.