Abstract: An amplifier circuit is capable of switching between a unipolar output voltage domain and a bipolar output voltage domain. The amplifier circuit comprises an operational amplifier with a feedback circuit that is configurable using switches. By controlling the switches, the amplifier's feedback circuit can switched between two different arrangements having a positive and a negative signal gain, respectively. The amplifier circuit is designed such that the noise gain is the same in both operating modes, allowing a single noise compensation approach to be used for both operating modes. Since configurability of the circuit is achieved using static switches, the amplifier circuit maintains high accuracy and experiences no appreciable impact on power consumption as a result of implementing the switching.

Abstract: An amplifier circuit is capable of switching between a unipolar output voltage domain and a bipolar output voltage domain. The amplifier circuit comprises an operational amplifier with a feedback circuit that is configurable using switches. By controlling the switches, the amplifier's feedback circuit can switched between two different arrangements having a positive and a negative signal gain, respectively. The amplifier circuit is designed such that the noise gain is the same in both operating modes, allowing a single noise compensation approach to be used for both operating modes. Since configurability of the circuit is achieved using static switches, the amplifier circuit maintains high accuracy and experiences no appreciable impact on power consumption as a result of implementing the switching.

Abstract: An electronic circuit includes an input configured to receive an input signal and an output configured to be coupled to load, an output transistor including a load path and a control node, the load path being connected between the output and a first supply node, a drive transistor including a load path and a control node, the load path being connected to the control node of the output transistor, a first electronic switch connected in series with the load path of the drive transistor, a biasing circuit including an internal impedance and connected between the control node of the drive transistor and the first supply node, and a control circuit configured to receive the input signal and to drive the first electronic switch based on the input signal.

Abstract: An electronic circuit includes an input configured to receive an input signal and an output configured to be coupled to load, an output transistor including a load path and a control node, the load path being connected between the output and a first supply node, a drive transistor including a load path and a control node, the load path being connected to the control node of the output transistor, a first electronic switch connected in series with the load path of the drive transistor, a biasing circuit including an internal impedance and connected between the control node of the drive transistor and the first supply node, and a control circuit configured to receive the input signal and to drive the first electronic switch based on the input signal.