Bandgap and VREF

Table 1. Internal Voltage Reference Characteristics
Symbol Description 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 2. ADC Internal Voltage Reference Characteristics(1)
Symbol(2) Description Condition Min Typ Max Unit
INT11V Internal reference voltage

VDD=[1.8V,3.6V]
T=[0-105]°C

-2.0   2.0 %

INT055V
INT15V
INT25V

Internal reference voltage

VDD=[1.8V,3.6V]
T=[0-105]°C

-3.0   3.0

INT055V
INT11V
INT15V
INT25V
INT43V

Internal reference voltage

VDD=[1.8V,5.5V]
T=[-40-125]°C

-5.0   5.0
Note:
  1. 1.These values are based on characterization and not covered by production testlimits.
  2. 2.The symbols INTxxV refer to the respective values of the ADC0REFSEL and DAC0REFSEL bit fields in the VREF.CTRLA register.
Table 3. DAC and AC Internal Voltage Reference Characteristics(1)
Symbol(2) Description Condition Min Typ Max Unit

INT055V
INT11V
INT15V
INT25V

Internal reference voltage

VDD=[1.8V,3.6V]
T=[0-105]°C

-3.0   3.0 %

INT055V
INT11V
INT15V
INT25V
INT43V

Internal reference voltage

VDD=[1.8V,5.5V]
T=[-40-125]°C

-5.0   5.0
Note:
  1. 1.These values are based on characterization and not covered by production test limits.
  2. 2.The symbols INTxxV refer to the respective values of the ADC0REFSEL and DAC0REFSEL bit fields in the VREF.CTRLA register.