Method for producing a differential signal at the output of a switched-capacitor circuit fed with a single input signal, and corresponding circuit

摘要

The circuit with capacitors switched by two non-overlapping clocks, comprises an input (BE) and two outputs (BS1) and (BS2). A first capacitor (C2) is capable of being connected between the input (BE) and earth by a first switching means (I6, I8) controllable by the first clock (H1) and between earth and one of the outputs (BS1) by a second switching means (I7, I9) controllable by the second clock (H2). A second capacitor (C20) is capable of being connected between the input (BE) and the other output (BS2) by a third switching means (I70, I90) controllable by the second clock (H2). The two terminals of the second capacitor C20 are capable of being connected to earth by a fourth switching means (I60, I80) controllable by the first clock.