Amplifier circuit

An amplifier circuit comprising:

• a differential input transmission path which includes a first input transmission path and a second input transmission path;
• a differential output transmission path which includes a first output transmission path and a second output transmission path;
• and
• at least one unit amplifier which is provided between the differential input transmission path and the differential output transmission path, wherein
• the unit amplifier includes a first transistor in which a first input signal is input from the first input transmission path to a first control terminal and which generates a first output signal,
• a second transistor in which a second input signal is input from the second input transmission path to a second control terminal and which generates a second output signal differential from the first output signal,
• a third transistor which is provided in parallel with the first transistor and generates a third output signal differential from the first output signal, and
• a fourth transistor which is provided in parallel with the second transistor and generates a fourth output signal differential from the second output signal, and
• the first output signal and the fourth output signal are merged to be output to the first output transmission path, and the second output signal and the third output signal are merged to be output to the second output transmission path.