[FAQ] TMS570LC4357: Clarification of ADC reference voltage on TMS570LC4357 HDK board

jagadish gundavarapu

Guru 72546 points

Part Number: TMS570LC4357

Tool/software:

In this FAQ i want to clarify the ADC reference voltage selection on TMS570LC4357 HDK board.

+1 jagadish gundavarapu 5 months ago

Here is the reference voltage on HDK:

In this schematic the ADC reference voltage can be select as either 5v or 3v. Cannot choose 3.3v directly from this schematic.

If we connect J8 jumper, then the voltage is 3v but if we didn't connect the jumper then the reference voltage is 5v.

We confirmed this in practical on below thread:

This could also lead to the wrong internal temperature measurement, please refer below thread once: