F28335, which pin is the ADCREFIN ?

Pankaj Kadam

Other Parts Discussed in Thread: TMS320F28335

Hi all,

I am using the TMS320F28335 Delfino Experimental kit.

In the ADC module, I want to apply an external reference voltage of 1.5 volts to the ADC module, but the datasheet or ADC documents doesn't show which pin on the board needs to be applied the reference voltage. I didn't find any pin named ADCREFIN on the board. Do we have to configure one of the ADC pins of ADCINA 0-8 or ADCINB 0-8 as ADCREFIN? If yes, how is it configured?

Thank you for your help.

over 12 years ago

0 Gautam Iyer over 12 years ago

Guru 192875 points

Hi Pankaj,

ADCREFIN is the PIN no.54 in 176-pin PGF/PTP package but yes on Experimenter's Kit its not provided. You've to use the internal reference. To know how to use internal reference, you can go through SPRU812, that can be found here: http://www.ti.com/product/tms320f28335

Regards,

Gautam

0 Pankaj Kadam over 12 years ago in reply to Gautam Iyer

Intellectual 480 points

Thanks Gautam, for your quick reply.

0 Gautam Iyer over 12 years ago in reply to Pankaj Kadam

Guru 192875 points

No Prob, Pankaj.

Do revert if you face any further issues.

Regards,

Gautam

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F28335, which pin is the ADCREFIN ?