TMS570 ADC Module

Brent Shen

Hi there,

If the ADC module is not used in my application, is it possible for me not to power up the module by leaving pins VCCAD & ADREFHI floating and connecting pins VSSAD & ADREFLO to ground?

Thanks,

Brent Shen

over 13 years ago

0 Jean-Marc Mifsud over 13 years ago

TI__Mastermind 22375 points

Brent,

For which device this question is applicable?

0 Brent Shen over 13 years ago in reply to Jean-Marc Mifsud

Intellectual 335 points

Hi there,

It's for TMS570.

Thanks,

Brent Shen

0 Jean-Marc Mifsud over 13 years ago in reply to Brent Shen

TI__Mastermind 22375 points

Brent,

Our recommendation when the ADC is not used is to ground VCC_AD and VREFHI. Don't leave this pin floating.
Once VCC_AD and VREFHI are grounded, all ADC input channels could safely be left open or grounded too.

May I ask why you don't want to provide supply to the ADC?

0 Brent Shen over 13 years ago in reply to Jean-Marc Mifsud

Intellectual 335 points

Hi Jean-Marc,

Thank you for your reply. Since ADC is not used in my application, I suppose that powering off ADC could save some power. (I could be wrong).

Regards,

Brent Shen

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TMS570 ADC Module