TMS320F280034-Q1: VDAC input current

Marcus Frech

Intellectual 1470 points

Part Number: TMS320F280034-Q1

Tool/software:

Hi,

my customer is looking for the VDAC input current.

He is using this as reference voltage for a comparator (current monitor).

Can you get us a number for input current typical, max., ..., please?

Many thanks and bets regards

Marcus

3 months ago

0 Sumit Patil1 3 months ago

TI__Expert 3420 points

Marcus,

Following is the datasheet snippet that shows the leakage current from VDAC pin. FYI, this is reference input pin for DAC and not supposed to be externally.

Regards,

Sumit

0 Marcus Frech 3 months ago in reply to Sumit Patil1

TI__Intellectual 1470 points

Hi Sumit,

found below E2E ticket which is basically the same question, except my customer uses 3x Comparators.

E2E Ticket: https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/636827/tms320f280049-vdac-leakage-current-spec/2349294#2349294

Please can you confirm our calculation of 3,3V/6k = 0.55mA; 0.55mA * 3 CPMSS modules = 1.65mA is correct, please?

Many thanks and best regards

Marcus

+1 Sumit Patil1 3 months ago in reply to Marcus Frech

TI__Expert 3420 points

Yes, your calculation is correct.

Regards,

Sumit

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TMS320F280034-Q1: VDAC input current