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adc triggering speed!!

Question asked by asr.ahmed on Apr 5, 2017

i use adc in dual mode fast interleaved with stm32f103

when i use adc with continuous conversion mode

if i set adc to 14mhz i get 1msps and this good

but when i use timer3 trigger out the maximum speed i can get is about 500ksps

so the continuous conversion mode give me full adc speed but tim3 give me half full speed

whyyyyyyy???

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