Patent Number: 7,355,456

Title: Wide linear range peak detector

Abstract: A wide linear range peak detector including first and second peak detectors and a compensation circuit. The first peak detector receives an input signal and has an output providing a first peak signal approximation which approximates a peak level of the input signal. The first peak signal approximation includes a non-linear portion which is a function of the peak level of the input signal. The second peak detector also receives the input signal and has an output providing a second peak signal approximation. The compensation circuit uses the second peak signal approximation to provide a compensation signal which compensates the non-linear portion of the first peak signal approximation. In particular, the second peak signal is used to generate the compensation signal to approximate and cancel the non-linear portion.

Inventors: Kurtzman; Gary A. (Austin, TX), Hoggarth; Steven P. (Sunrise, FL)

Assignee: Freescale Semiconductor, Inc.

International Classification: G01R 19/00 (20060101)

Expiration Date: 2020-04-08 0:00:00