Circuit for averaging with a full-wave rectifier

摘要

A full wave rectifier/averaging circuit for processing an input signal having a large dynamic range. A rectification circuit (11) is responsive to the input signal for providing a first signal (15) to a current mirror whereby the current mirror provides a second signal (16) in response to the first signal. An averaging circuit (13) is coupled to the current mirror to perform averaging of the second signal. An output circuit (14) is coupled to the averaging circuit to provide an output signal at an output terminal (18).