Low power potentiostat using switching technique for three electrode amperometric sensors

A low power potentiostat is presented in this work with the aim of power consumption reduction. The proposed potentiostat has been designed to cover sensor currents in the range of milliamps. Simulation results have been obtained for a typical electrochemical cell using a 180 nm CMOS technology. Low power, low settling time and low ripple of output voltage are the main features of the proposed structure. The suggested architecture is an appropriate choice for ultra low power applications such as implantable biosensors.