39.10 Internal Voltage Reference Specifications

Table 39-12. Internal Voltage Reference DC Electrical Specifications
DC CHARACTERISTICS			Standard Operating Conditions: VDD and VDDIO 2.7V to 5.5V (unless otherwise stated) Operating temperature: -40°C ≤ TA ≤ +85°C for Industrial
Param. No.	Symbol	Characteristics	Min.	Typ.	Max.	Units	Conditions
VR_1	IREF^(1,2)	Internal Voltage Reference ADC.REFCTRL.REFSEL = INTREF	4.014	4.096	4.178	V	AVDD(min) +0.6 ≥ INTERNAL Voltage 25 °C, AVDD = 5.0V SUPC.VREF.SEL = 3
VR_9a	ACIREF⁽³⁾	Internal Voltage Reference Comparator AC.COMPCTRLn.MUXNEG = INTREF	4.014	4.096	4.178	V	25 °C, AVDD = 5.0V SUPC.VREF.SEL = 3
VR_9b			2.007	2.048	2.089	V	25 °C, AVDD = 5.0V SUPC.VREF.SEL = 2
VR_9c			1.003	1.024	1.045	V	25 °C, AVDD = 5.0V SUPC.VREF.SEL = 0
VR_25	TDRIFT	Internal Voltage Reference Temperature Drift	—	-0.025/0.04	—	%/°C	Over [-40, +25]°C
VR_25	TDRIFT	Internal Voltage Reference Temperature Drift	—	-0.015/0.03	—	%/°C	Over [+25, +85]°C
VR_27	VDRIFT	Internal Voltage Reference Voltage Drift	-0.2	—	0.3	%/V	Over full operating voltage range
Note: ADC Internal Voltage Reference voltage 2.4V ≤ IREF ≤ AVDD. ADC reference voltages < 2.4V (i.e., < 500µV/step) is not practical and peripheral performance is not guaranteed. See parameter CMP_23 for comparator reference voltage range information.