| 摘要 |
A differential amplifier having high gain, short settling time and capable of low voltage operation. A differential transistor pair is connected to an active load which includes two or more casocode connected transistor pairs. Gain boosting amplifiers are connected between the gate and source of one of the load pair so as to increase the effective impedance of the load pair thereby increasing the gain. A compensation capacitor is connected between the gate of each load transistor and the drain of the other load transistor, with the drains having equal and opposite voltage swings. During amplifier slewing, a charge is transferred to and from the gate of the load transistors by way of the compensation capacitors thereby reducing the output settling time.
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