Differential amplifier and semiconductor device

A differential amplifier comprising:

• a first differential circuit for generating a first operation current in response to an input signal;
• a second differential circuit for generating a second operation current in response to the input signal;
• a current synthesizing circuit, connected to the first and second differential circuits, for synthesizing the first and second operation currents and generating output voltage;
• a third differential circuit for generating a third operation current corresponding to the second operation current in response to the input signal;
• and
• a current supplying circuit, connected to the first differential circuit and the third differential circuit, for supplying the first differential circuit with the third operation current and offsetting the first operation current with the third operation current.

A differential amplifier comprising:

• a first differential circuit for generating a first operation current in response to an input signal;
• a second differential circuit for generating a second operation current in response to the input signal;
• a current synthesizing circuit, connected to the first and second differential circuits, for synthesizing the first and second operation currents and generating output voltage;
• a third differential circuit for generating a third operation current corresponding to the first operation current in response to the input signal;
• and
• a current supplying circuit, connected to the second differential circuit and the third differential circuit, for supplying the second differential circuit with the third operation current and offsetting the second operation current with the third operation current.

A semiconductor device comprising:

• a differential amplifier for amplifying an input signal, the differential amplifier including:
• a first differential circuit for generating a first operation current in response to the input signal;
• a second differential circuit for generating a second operation current in response to the input signal;
• a current synthesizing circuit, connected to the first and second differential circuits, for synthesizing the first and second operation currents and generating output voltage;
• and
• an output current offset circuit, connected to the current synthesizing circuit, for offsetting a current corresponding to one of the first and second operation currents based on the input signal.

A semiconductor device comprising:

• a differential amplifier for amplifying an input signal, the differential amplifier including:
• a first differential circuit for generating a first operation current in response to the input signal;
• a second differential circuit for generating a second operation current in response to the input signal;
• a current synthesizing circuit, connected to the first and second differential circuits, for synthesizing the first and second operation currents and generating output voltage;
• a third differential circuit for generating a third operation current corresponding to the second operation current in response to the input signal;
• and
• a current supplying circuit, connected to the first differential circuit and the third differential circuit, for supplying the first differential circuit with the third operation current and offsetting the first operation current with the third operation current.

A semiconductor device comprising:

• a differential amplifier for amplifying an input signal, the differential amplifier including:
• a first differential circuit for generating a first operation current in response to the input signal;
• a second differential circuit for generating a second operation current in response to the input signal;
• a current synthesizing circuit, connected to the first and second differential circuits, for synthesizing the first and second operation currents and generating output voltage;
• a third differential circuit for generating a third operation current corresponding to the first operation current in response to the input signal;
• and
• a current supplying circuit, connected to the second differential circuit and the third differential circuit, for supplying the second differential circuit with the third operation current and offsetting the second operation current with the third operation current.