a linear differential amplifier with improved voltage swing is disclosed . the linear differential amplifier corrects for an error voltage inherent in differential pair amplifiers , without hindering the available voltage swing , and thus , is particularly suited for low - voltage applications . the differential amplifier includes an input differential amplifier for receiving an input voltage difference to be amplified ; a distortion correction differential amplifier for producing an error correction amount ; and an output differential amplifier for receiving the input voltage difference and the error correction amount , amplifying the input voltage difference to produce an output voltage , and correcting the output voltage in accordance with the error correction amount . also disclosed is a method for improving available voltage swing of a differential amplifier when amplifying an input voltage difference .