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Original question:

TMS320F28379D: Possible to use ADC in differential, 12-bit mode ? (instead of 16-bit)

TMS320F28379S: single-ended 16 bit ADC

David Heidenberger
Prodigy 10 points
Part Number: TMS320F28379S

Hello,

the microprocessor specification suggests, that the ADC can only be used in:
a) 16 bit resolution and differential inputs
b) 12 bit resolution and single-ended inputs

Initializing the ADC with the command " AdcSetMode(ADC_ADCA, ADC_RESOLUTION_16BIT, ADC_SIGNALMODE_SINGLE); " seems to work and returns 16Bit sampled values.

Are there any drawbacks in setting up the ADC in this manner?

  • +1
    TI__Expert 7436 points

    Hello David,

    Yes, the single-ended 16-bit mode works on this device; however, it has not been characterized by TI and so there is no assurance that data sheet performance specifications will be met. This mode is fully supported on the F2838x device. The two devices share the same ADC design so likely it will work for you, but this is not specified by TI on F2837x.

    Best regards,
    Ibukun