| 摘要 |
A high gain, low voltage differential amplifier exhibiting extremely low common mode sensitivities includes a load element exhibiting a high differential resistance, but a low common mode resistance. The load element contains a positive differential load resistance and a negative differential load resistance, which offsets the positive differential load resistance. The output common mode level of the differential amplifier is one p-channel source to gate voltage drop below the power supply voltage prohibiting the common mode output voltage from drifting far from an active level. The differential amplifier also has application for use in a differential charge pump circuit. The high differential impedance of the differential amplifier allows the attainment of extremely small leakage, while a low common-mode impedance results in simplified biasing.
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