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doc(temperature_sensor): Update temperature snesor docs, remove inaccurate part

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C.S.M
2025-07-04 16:17:15 +08:00
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docs/en/api-reference/peripherals/temp_sensor.rst
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@@ -8,29 +8,9 @@ Introduction
The {IDF_TARGET_NAME} has a built-in sensor used to measure the chip's internal temperature. The temperature sensor module contains an 8-bit Sigma-Delta analog-to-digital converter (ADC) and a digital-to-analog converter (DAC) to compensate for the temperature measurement.
Due to restrictions of hardware, the sensor has predefined measurement ranges with specific measurement errors. See the table below for details.
.. list-table::
:header-rows: 1
:widths: 50 50
:align: center
* - Predefined Range (°C)
- Error (°C)
* - 50 ~ 125
- < 3
* - 20 ~ 100
- < 2
* - -10 ~ 80
- < 1
* - -30 ~ 50
- < 2
* - -40 ~ 20
- < 3
.. note::
The temperature sensor is designed primarily to measure the temperature changes inside the chip. The internal temperature of a chip is usually higher than the ambient temperature, and is affected by factors such as the microcontroller's clock frequency or I/O load, and the external thermal environment.
The temperature sensor is designed primarily to measure the temperature **inside** the silicon. The sensor can reflect the temperature changes very well but it can't give a precise measurement value. So it's not recommended to use it for ambient temperature measurement.
Functional Overview
-------------------