New CMOS Current-Mode Analogue to Digital Power Converter

Abstract

© 2016, Springer Science+Business Media New York. The paper presents a completely new realization of a current-mode power detector employing a four-quadrant CMOS analogue multiplier, integrator, zero-crossing detectors and a grounded capacitor. Based on the value of the integration of the original input signals, a calculation is performed using the definition formulas. The product of input current signals was directly introduced into the integration circuit, and its digital equivalent was subsequently formed. Signal-processing-related errors and errors bound were investigated and presented in the paper. Simulation, performed using HSPICE with 0.25μm technology, and experimental results confirmed the performance of the proposed circuit. The obtained results show that the scheme improves the detector’s accuracy to over 1 %, while widening the operating frequency range to up to 100 MHz. The maximum power consumptions of converter at ±2.5 V supply voltages amount to approximately 8.37 mW.