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Part Number: MSP432P401R
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?
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In reply to Chris Sterzik:
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