Amplifier circuits comprising an input transistor, a load transistor, and a feedback resistor. In one example, one embodiment is directed to an amplifier circuit comprising an input transistor, a load transistor having a control terminal and a reference terminal, and a feedback transistor. The input transistor receives an input signal, the input transistor is electrically coupled to the load transistor and the feedback transistor, the control terminal of the load transistor is electrically coupled to a bias voltage, the feedback transistor is electrically coupled to the load transistor providing negative feedback, and the reference terminal of the load transistor serves as an output of the amplifier circuit.