RM0008 Analog-to-digital converter (ADC)
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10.10 Temperature sensor
The temperature sensor can be used to measure the ambient temperature (T
A
) of the
device.
The temperature sensor is internally connected to the ADCx_IN16 input channel which is
used to convert the sensor output voltage into a digital value. The recommended sampling
time for the temperature sensor is 17.1 µs.
The block diagram of the temperature sensor is shown in Figure 38.
When not in use, this sensor can be put in power down mode.
Note: The TSVREFE bit must be set to enable both internal channels: ADCx_IN16 (temperature
sensor) and ADCx_IN17 (V
REFINT
) conversion.
Main features
● Supported Temperature Range: –40 to 125 degrees
● Precision: ± 1.5 °C
Figure 38. Temperature sensor and V
REFINT
channel block diagram
SENSOR
TEMPERATURE
V
SENSE
TSVREFE control bit
ADC1
Address/data bus
converted data
V
REFINT
ADCx_IN16
ADCx_IN17
POWER
BLOCK
INTERNAL
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