Abstract: The present invention is a closed-loop peak detection circuit comprising switching means, comparing means, control means, two current sources, and a holding capacitor. The switching means selectively provides one of a plurality of input signals to the comparing means. The control means is coupled to the comparing means. The control means receives first and second control signals for selecting one of three modes: reset, peak detect, and hold. First and second current sources are coupled to the control means. A capacitor is coupled to the first and second current sources for generating an output signal. The output signal is feedback coupled to the comparing means. The comparing means determines when one of the plurality of input signals exceeds the output signal. The control means enables and disables the current sources in response to the comparing means and to the first and second control signals.

Abstract: The present invention is a closed loop peak detection circuit comprising switching means, comparing means, control means, two current sources, and a holding capacitor. The switching means selectively provides one of a plurality of input signals to the comparing means. The control means is coupled to the comparing means. The control means receives first and second control signals for selecting one of three modes: reset, peak detect, and hold. First and second current sources are coupled to the control means. A capacitor is coupled to the first and second current sources for generating an output signal. The output signal is feedback coupled to the comparing means. The comparing means determines when one of the plurality of input signals exceeds the output signal. The control means enables and disables the current sources in response to the comparing means and to the first and second control signals.