Linear power circuit

1 . A linear power circuit, comprising:

an input unit, configured to receive an input signal and output a first current signal;

a current-voltage converter, configured to convert the first current signal into a first voltage signal;

a voltage-current converter, configured to convert the first voltage signal into a second current signal; and

an output unit, configured to:

generate an output current signal from the second current signal using a current mirror circuit, and

output the output current signal to an output terminal,

wherein the input unit and the current-voltage converter constitute a current feedback operational amplifier,

wherein the input unit includes:

a first input terminal, to which the input signal is input;

a second input terminal, electrically connected to the output terminal; and

a buffer circuit, connected to the first input terminal and the second input terminal,

wherein the input unit is configured to output the first current signal from the buffer circuit to the current-voltage converter, and

wherein the linear power circuit further comprises:

a feedback resistor connected between the second input terminal and the output terminal; and

a feedback capacitor connected in parallel with the feedback resistor.

2 . A linear power circuit, comprising:

an input unit, configured to receive an input signal and output a first current signal;

a current-voltage converter, configured to convert the first current signal into a first voltage signal;

a voltage-current converter, configured to convert the first voltage signal into a second current signal; and

an output unit, configured to:

generate an output current signal from the second current signal using a current mirror circuit, and

output the output current signal to an output terminal, wherein

the input unit and the current-voltage converter constitute a current feedback operational amplifier, and

wherein the voltage-current converter and the output unit constitute a class AB amplifier.

3 . The linear power circuit of claim 2 , wherein the input unit includes:

a first input terminal, to which the input signal is input;

a second input terminal, electrically connected to the output terminal; and

a buffer circuit, connected to the first input terminal and the second input terminal, wherein

the input unit is configured to output the first current signal from the buffer circuit to the current-voltage converter.

4 . The linear power circuit of claim 3 , wherein the buffer circuit comprises a single ended push-pull (SEPP) circuit.

5 . The linear power circuit of claim 3 , comprising a feedback resistor connected between the second input terminal and the output terminal.

6 . The linear power circuit of claim 2 , wherein the current-voltage converter includes a bias circuit for the class AB amplifier.

7 . The linear power circuit of claim 2 , further comprising a resistor connected in parallel with the current mirror circuit.

8 . The linear power circuit of claim 2 , wherein a power supply voltage supplied to the input unit and a power supply voltage supplied to the output unit are different.

9 . The linear power circuit of claim 3 , wherein a power supply voltage supplied to the input unit and a power supply voltage supplied to the output unit are different.

10 . The linear power circuit of claim 7 , wherein a power supply voltage supplied to the input unit and a power supply voltage supplied to the output unit are different.

11 . The linear power circuit of claim 2 , wherein a power supply voltage supplied to the input unit and the output unit is common.

12 . The linear power circuit of claim 3 , wherein a power supply voltage supplied to the input unit and the output unit is common.

13 . The linear power circuit of claim 7 , wherein a power supply voltage supplied to the input unit and the output unit is common.

14 . The linear power circuit of claim 2 , wherein a phase compensation is performed by an external output capacitor connected between the output terminal and a ground.

15 . The linear power circuit of claim 3 , wherein a phase compensation is performed by an external output capacitor connected between the output terminal and a ground.

16 . The linear power circuit of claim 7 , wherein a phase compensation is performed by an external output capacitor connected between the output terminal and a ground.