Apparatus and methods for performing RMS-to-DC conversion with bipolar input signal range

摘要

The invention provides methods and apparatus for performing RMS-to-DC conversion of input signals that have a bipolar input signal range, the methods and apparatus providing an input-output transfer gain substantially equal to unity (1.0) or other integer value. Apparatus of the invention do not require a preceding absolute value circuit, and include a modulator and a demodulator that may be implemented on a single integrated circuit and may use switched-capacitor technology.