i am facing accuracy problem for ADC band voltage, i have done below register settings based on that settings i can able to read 0.75v by multi-meter but the decimal values are i am getting in ADC->DATA_TRIM_CH is 7056, this decimal value is equal to 0.86v, so i am getting 100mv variation.
Calibrate_Power_VBG(0, (uint32_t *)&ADC->DATA_TRIM_CH,
/* VTRIM for AOUT ADC channel /
/ Select AOUT option as Band gap regulator supply voltage */
// ACS->BG_CTRL = (BG_SLOPE_TRIM_VALUE | BG_TRIM_0P750V);
ACS->AOUT_CTRL = (DIO0_RTC_CLK_STOP_RISING |
if any other settings required to improve accuracy, please give your inputs.