| 摘要 |
<p>An amplifier includes a differential amplifier and a first collector follower amplifier connected to the output terminal of the differential amplifier. A second collector follower amplifier is provided, the input terminal of which is connected to the common impedance of the differential amplifier to receive one part of the voltage thereacross, and the output terminal of which is connected to the output terminal of the first collector follower amplifier so as to reduce the common mode gain of the differential amplifier.</p> |
