55.13 Internal Voltage Reference Electrical Specifications
| DC CHARACTERISTICS | Standard Operating
Conditions: VDD = AVDD = 1.71V to 3.63V (unless otherwise stated) Operating temperature: -40°C ≤ TA ≤ +85°C for Industrial Temperature |
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| Param. No. | Symbol | Characteristics | Min. | Typ. | Max. | Units | Conditions |
| VR_1 | IREF | Internal Voltage Reference
ADC.REFCTRL.REFSEL = INTREF DAC.CTRLB.REFSEL = INTREF |
2.282 | 2.4 | 2.513 | V | AVDD = 3.3V, TA = 25°C AVDD(min) +0.6 ≥ INTERNAL Voltage Reference. SUPC VREF.SEL = 0x6 |
| VR_3 | 2.380 | 2.5 | 2.615 | V | AVDD = 3.3V, TA = 25°C AVDD(min) +0.6 ≥ INTERNAL Voltage Reference. SUPC VREF.SEL = 0x7 |
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| VR_9 | ACIREF | Internal Comparator Voltage Reference
AC.COMPCTRLn.MUXNEG = BANDGAP |
1.074 | 1.1 | 1.125 | V | AVDD = 3.3V, TA = 25°C |
| VR_25 | TDRIFT | Internal Voltage Reference Temperature Drift | -0.02 | --- | 0.03 | %/°C | Over full operating temperature range |
| VR_27 | VDRIFT | Internal Voltage Reference Voltage Drift | -0.2 | --- | 0.7 | %/V | Over full operating voltage range |