37.14 Bandgap and VREF

Table 37-19. Internal Voltage Reference Characteristics
Symbol Description Condition Min. Typ. Max. Unit
tstart Start-up time - 25 - µs
VDDINT055V Power supply voltage range for INT055V 1.8 - 5.5 V
VDDINT11V Power supply voltage range for INT11V 1.8 - 5.5
VDDINT15V Power supply voltage range for INT15V 2.0 - 5.5
VDDINT25V Power supply voltage range for INT25V 3.0 - 5.5
VDDINT43V Power supply voltage range for INT43V 4.8 - 5.5
Table 37-20. ADC Internal Voltage Reference Characteristics
Symbol Description Condition Typ 25°C T=[0, 70]°C T=[0, 105]°C T=[-40, 125]°C Unit
INT055V Internal 0.55V reference voltage VDD=3V 0.55V TBD TBD TBD V
INT11V Internal 1.1V reference voltage VDD=3V 1.1V TBD TBD TBD
INT15V Internal 1.5V reference voltage VDD=3V 1.5V TBD TBD TBD
INT25V Internal 2.5V reference voltage VDD=3V 2.5V TBD TBD TBD
INT43V Internal 4.3V reference voltage VDD=5V 4.3V TBD TBD TBD
Table 37-21. DAC and AC Internal Voltage Reference Characteristics
Symbol Description Condition Typ. 25°C T=[0, 70]°C T=[0, 105]°C T=[-40, 125]°C Unit
INT055V Internal 0.55V reference voltage VDD=3V 0.55V TBD TBD TBD V
INT11V Internal 1.1V reference voltage VDD=3V 1.1V TBD TBD TBD
INT15V Internal 1.5V reference voltage VDD=3V 1.5V TBD TBD TBD
INT25V Internal 2.5V reference voltage VDD=3V 2.5V TBD TBD TBD
INT43V Internal 4.3V reference voltage VDD=5V 4.3V TBD TBD TBD
Note: The symbols INTxxV refer to the respective values of the ADC0REFSEL and DAC0REFSEL bit fields in the VREF.CTRLA register.