57.10 Temperature Sensor
The temperature sensor is connected to channel 11 of the AFE0.
The temperature sensor provides an output voltage (VTEMP) that is proportional to absolute temperature (PTAT).
Improvement of the raw performance of the temperature sensor acquisition can be achieved by performing a single temperature point calibration to remove the initial inaccuracies (VTEMP and ADC offsets).
| Symbol | Parameter | Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| VTEMP | Output Voltage via AFE0_AD11 | TA = 25°C | 0.64 | 0.72 | 0.8 | V |
| dVTEMP/dT | Temperature Sensitivity (Slope Voltage versus Temperature) | – | 2.06 | 2.33 | 2.60 | mV/°C |
| tS | VTEMP Settling Time | When VTEMP is sampled by the AFEC, the required track-and-hold time to ensure 1°C accurate settling | – | – | 1 | µs |
| – | Temperature Accuracy | After offset calibration over TA range [-40°C : +105°C] | -10 | – | 10 | °C |
| tSTART | Startup Time | – | – | – | 30 | µs |
| IVDDIN | Current Consumption | – | – | 130 | 270 | µA |
Note: AFE Gain Error and Offset error considered calibrated. This calibration at ambient
temperature is not a feature of the product and is performed by the user's
application.