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).

Table 1. Temperature Sensor Characteristics
Symbol Parameter Conditions Min. Typ. Max. Unit
VTEMP Output Voltage via 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.
Parent topic: Electrical Characteristics for SAM V70/V71