| 摘要 |
Disclosed is a differential amplifier having a high voltage gain and a stable common-mode output voltage. The differential amplifier is comprised of a signal loading circuit to regulate the amount of currents flowing through first and second signal output terminals. The signal loading circuit includes first and second loading diodes to regulate the amount of currents flowing each to the first and second output terminals from a power source voltage, and a loading source to regulate current amount flowing from the power source voltage to the second signal output terminal in response to the first signal output signal. The differential amplifier is characterized with a high voltage gain for a small signal, generating a stable common-mode output voltage against variation of a common-mode voltage of input voltages as well. |
