In an embodiment, an electronic circuit includes: an amplifier having first and second outputs, first and second inputs, and first and second terminals; a high pass filter coupled between the first and second terminals of the amplifier; and a configurable output network coupled between the first and second outputs of the amplifier.

An amplifying circuit includes a first amplifier circuit, a second amplifier circuit, and a common mode feedback circuit. The first amplifier circuit includes a first transistor configured to receive a first input voltage signal and connected to a first node and a second node. A first current source located between a power voltage line and the first node is configured to supply a first current to the first transistor. A second current source is located between the first node and the second node and is connected in parallel with the first transistor, wherein a path of a first current flowing from the first node to the second node is determined based on a comparison of the first voltage level of the first input voltage signal to a first predetermined voltage level.