MSP432P401R: The method and setup of testing ENOB of ADC14 in MSP432

Eason Zhou

Part Number: MSP432P401R

Hi e2e,

I want to test the performance of ADC14 in MSP432. According to the datasheet, the typical ENOB is 13.2bit. But when I use MSP-EXP432P401R LaunchPad and LM4140 as the input signal and reference power to test its ENOB, I find there is a gap between my result with the datasheet.

Do we have the document can guide me test and calculate ENOB?

Or Can you tell me the formula of calculating ENOB and the setup when testing ADC14?

Eason

over 7 years ago

0 Chris Sterzik over 6 years ago

TI__Guru 57566 points

Please find the example code and test description found in SLAA821. www.ti.com/.../slaa821.pdf The calculation is taken directly from Mathlab and the stimulus source is the Precision Signal Injector, www.ti.com/.../ADS8900BEVM-PDK.

Best Regards,
Chris

0 Eason Zhou over 6 years ago in reply to Chris Sterzik

TI__Mastermind 38300 points

Hi Chris,

Thank you very much. I have found the setup of ADC14 test from "Precision ADC With 16-Bit Performance".

Eason

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MSP432P401R: The method and setup of testing ENOB of ADC14 in MSP432