Variable mode CMOS full-wave rectifier

A variable mode full-wave rectifier deploying one MOCCCII (multiple output current controlled conveyor), one CC (current comparator) and analogue switch, without any external passive components and diodes is presented. The circuit supports precise processing of input signals of up to 200 MHz frequency, producing an input operating range of ±150 mV in the voltage mode (VM) and ±300 μA in the current mode (CM). It also exhibits good temperature stability. Signal-processing related errors and errors bound were investigated and presented in the paper. The presented circuit has an appropriate zero crossing performance, linearity and low component count. It is also suitable for monolithic integrated implementation. The simulation results confirm the feasibility of the proposed circuit. The maximum power consumptions of the rectifier at ±1.65 V supply voltages amount to approximately 4.62 mW.