Mixed voltage driving circuit

A driving circuit generating an output signal according to an input signal generated from an input-stage voltage with a first voltage level and a reference voltage with a second voltage level, comprising:

• a differential amplifier having a first input terminal coupled to the reference voltage, a second input terminal coupled to the output signal, and an output terminal, wherein the differential amplifier is supplied by an operation voltage with a third voltage level;
• and
• an output stage, coupled to the second input terminal and the output terminal of the differential amplifier, configured to receive the input signal and the operation voltage to generate the output signal,
• wherein the second input terminal is coupled to the output terminal of the differential amplifier according to the input signal,
• wherein the first voltage level is lower than the third voltage level, and the second voltage level is between the first voltage level and the third voltage level,
• wherein the operation voltage is generated according to the input signal and the input-stage voltage.