3.9 Electrical Characteristics - ADC

A clarification has been made for ADC Specifications in the ADC Accuracy Specifications table.

Table 37-23. ADC Accuracy Specifications

Operating Conditions:
  • VDD = 3.0V
  • TA = 25ºC
SymbolDescriptionMin.Typ. ✝Max.UnitConditions
NRResolution12bit
EINLIntegral nonlinearity error-10.11LSbVDD = VREF = 3.0V
EDNLDifferential nonlinearity error(1)-10.11LSbVDD = VREF = 3.0V
EOFFOffset error1.335LSbVDD = VREF = 3.0V
EGAINGain error-51.55LSbVDD = VREF = 3.0V
EABSAbsolute errorLSbVDD = VREF = 3.0V
VADCREFADC reference voltage 1.8VDDV
VAINFull-scale rangeGNDVADCREFV
ZAINRecommended impedance of analog voltage source1
RVREFAADC voltage reference ladder impedance(2)50

Data in the “Typ.” column is at TA = 25°C and VDD = 3.0V unless otherwise specified. These parameters are for design guidance only and are not tested.

Note:
  1. The ADC conversion result never decreases with an increase in the input and has no missing codes.
  2. This is the impedance seen by the VREFA pin when the external reference is selected.