TMS320F28035: Is the offset trim function available on 64pin F28035?

Brian Wang0

Expert 5400 points

Part Number: TMS320F28035

Hi team,

We noticed in the ADC initialization function, the ADC B5 is used to sample the offset.

But on the 64pin version ,there is no ADC B5 channel pin out. Does the offset still be available internally?

Regards,

Brian

over 3 years ago

0 Marlyn Rosales Castaneda20 over 3 years ago

TI__Mastermind 25800 points

Hi Brian,

Brian Wang0 said:
But on the 64pin version ,there is no ADC B5 channel pin out. Does the offset still be available internally?

Yes, this should not affect the initialization function. B5 is internally muxed with VREFLO. Instead of applying 0V to B5, ADCTL1.VREFLOCONV is used to switch the mux to VREFLO and sample that for a 0V input.

Best Regards,

Marlyn

0 Brian Wang0 over 3 years ago in reply to Marlyn Rosales Castaneda20

TI__Expert 5400 points

Hi Marlyn,

Thanks, it is very clear.

Regards,

Brian

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TMS320F28035: Is the offset trim function available on 64pin F28035?