TMS320F28379D: VREF power up slower than VDDA and VDDIO: What is the risk

Sheldon He

Part Number: TMS320F28379D

Hi expert,

My customer supply VREFHIx with high precision LDO and power up for this pin is slower than VDDIO and VDDA for about 2.5ms. Is than any risk here to power up this pin like this?

Thanks

Sheldon

over 3 years ago

0 Sheldon He over 3 years ago

TI__Expert 8585 points

Hi expert,

Any risks here?

Thanks

Sheldon

0 MatthewPate over 3 years ago in reply to Sheldon He

TI__Guru 71835 points

Sheldon,

There is no risk to this method for the customer.

For the accuracy of the ADC the only constraint would be the VREFHI be stable before the ADC is used to sample an input, no risk to any damage to the device.

Best,
Matthew

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28379D: VREF power up slower than VDDA and VDDIO: What is the risk