46.13 Internal Voltage Reference Electrical Specifications (IVREF)

Table 46-18. Internal Voltage Reference DC Electrical Specifications
DC CHARACTERISTICSStandard Operating Conditions: VDDREG = VDDIO = AVDD 1.71V to 3.63V (unless otherwise stated)

Operating temperature:

-40°C ≤ TA ≤ +85°C for Industrial

Param. No.SymbolCharacteristicsMin.Typ. (1)Max.UnitsConditions
VR_1IVREF ADC Internal Analog Channel Voltage (*)1.20326(*)VADC.CTRLB.ADCHSEL = 1.2V IVREF
VR_9ACIREFInternal Comparator Voltage Reference (*)(*)(*)VAC.COMPCTRLn.MUXNEG = Bandgap
VR_25TDRIFTInternal Voltage Reference Temperature Drift(*)%/°COver full operating temperature range
VR_27VDRIFTInternal Voltage Reference Voltage Drift(*)%/VOver full operating voltage range
Note:
  1. Typical values at 25°C, see parameter CMP_23 for Comparator Reference voltage range information.