Voltage tolerance on VCC, VDDA, VREF
According to datasheet, VREF must be <=VDDA.We use an accurate 3.3V reference voltage on VREF.VDDA is connected to VCC supplied by a LDO 3.3V with +-2% accuracy.Thus it would be possible that VREF is above VDDA by 66mV. Is that a problem?