VREF, also known as bai reference voltage, or reference comparison circuit, or reference voltage reference. When zhi is like indicating the height of an object, dao always uses sea level as a reference (called "elevation"), otherwise, it is impossible to determine its height.
1. VREF: abbr. Reference Voltage (Voltage Reference)
2. For the op amp circuit, if the input signal is not compared with the VREF reference voltage, the size and range of the input signal cannot be determined; the MCU circuit performs A/D or D/A on the input analog signal or output analog signal When converting, you need to refer to a VREF value for conversion.
3. VREF refers to a voltage in the circuit that can be kept constant regardless of load, power supply, temperature drift, time, etc. Refers to the voltage value used as a reference point when measuring the voltage value.
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