| 摘要 |
An apparatus comprising a differential amplifier having a first input coupled to receive a voltage reference signal, a second input and an output. The apparatus also includes an inverter whose input is coupled to the differential amplifier output. The inverter includes first and second transistors that have source/drain regions. A third transistor is coupled between a source/drain region of the inverter and a power supply rail to cause a switching point of the inverter to track a common mode bias voltage of the differential amplifier.
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