66.9.5 ADC Electrical Characteristics
| Symbol | Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Differential Mode | ||||||
| INL | Integral Non-Linearity | – | 1 | – | 1 | LSB |
| DNL | Differential Non-Linearity | – | 1 | – | 1 | LSB |
| Single-Ended Mode | ||||||
| INL | Integral Non-Linearity | – | 1.5 | – | 1.5 | LSB |
| DNL | Differential Non-Linearity | – | 1 | – | 1 | LSB |
| Symbol | Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Differential Mode | ||||||
| EO | Differential Offset Error | – | -2.0 | – | 2.0 | LSB |
| EG | Differential Gain Error | – | -0.2 | – | 0.2 | % |
| Single-Ended Mode | ||||||
| EO | Single-ended Offset Error | – | -2.0 | – | 2.0 | LSB |
| EG | Single-ended Gain Error | – | -0.2 | – | 0.2 | % |
| Symbol | Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| VFS | Analog Input Full Scale Range(1) | ADC_COR.DIFFx = 0 | 0 | – | VADVREF | V |
| ADC_COR.DIFFx = 1 | -VADVREF | – | VADVREF | |||
| VINCM | Common Mode input range(2) | ADC_COR.DIFFx = 1 | 0.4 × VDDANA | – | 0.6 × VDDANA | V |
| CIN | ADC sampling capacitance | – | – | – | 3 | pF |
| CP_ADx | Analog input parasitic capacitance(4) | ADx pin configured as analog input | – | – | 10 | |
| ZIN | Common Mode Input impedance(3) | On ADx pin | 1 / (fS × CP_ADx) | – | – | Ω |
Note:
- VFS = VADx in Single-ended mode, VFS = (VADx - VADx+1) in Differential mode.
- VINCM = (VADx + VADx+1) / 2.
- See the figure "Input Channel Model". When converting one single channel, most of the input parasitic capacitance in not switched, therefore the common mode input impedance reduces to ZIN = 1 / (fS × CIN).
- Includes CIN.