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Part Number: MSP432P401R
Hello everyone!
I'm try use MSP432 LaunchPad and see some noise (or interference) in ADC output.
I'm interesting in precision results and captured some arrays of results.
On pictures are:
histogram of codes in case internal temperature sensor and internal REF and launchpad alone;
histogram in case internal temperature sensor and internal REF and launchpad in assemble with custom input buffer PCB ;
histogram in case internal temperature sensor and external REF and launchpad in assemble with custom input buffer PCB ;
histogram in case external op amp buffer connected, input on ground and external REF and launchpad in assemble with custom input buffer PCB ;
Are anybody know:
Can this device itself get clean signal like dedicated ADC? (2-3 codes)
Is my problem with LaunchPad and my own PCB ground noises?
Or I must processing (filter, etc) output codes?
Or right way is use dedicated ADC IC, not integrated in MCU?
Thanks!
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