Large-time constant exponential integrator furnished with switched capacitors

摘要

1. An exponential integrator circuit having switched capacitors, characterized in that it comprises three units, each including one switched capacitor and connected respectively at one side to a common point (P), the first unit (10) being connected at its other side to an input (E) of the circuit, the second unit (20) to the output of an operational amplifier (AO) mounted as voltage follower and having unitary gain, and the third unit (30) to an output (S) of the circuit and to a non-inverting input of the operational amplifier, a capacitor (C) which is not switched being connected between the output (S) of the circuit and an electrical earth terminal.