Part Number: TMS320F280049 Hi team, My customer met an ADC sampling point voltage change issue in their system. Here is how the voltage is measured Vo+ and Vo- are two points on the DC line, while VOT+ and VOT are two measurement points connecting to MCU ADC without any buffering. Here is what is happening while sampling: The purple waveform ch3 represents Vo+ while the blue waveform ch2 represents Vot+. Both signal is measured with same GND in the schematic. As you can see, the 2 waveform did not change in the same trend, which is very strange. Do you have any idea what is happening here? Thanks, Brian
↧