Patent ID: 6642703
Filing Date: 2003-11-04
Classification: G01R

Abstract:
A peak detector, for receiving an input signal and output a peak signal from an output terminal, the peak detector comprising:a comparator for receiving the input signal and the peak signal and generating a comparing signal by comparing the input signal and the peak signal; a programmable pulse generator, for receiving the comparing signal and generating a first pulse signal and a second pulse signal in according to the comparing signal; a logic unit, for receiving the first pulse signal and the second pulse signal and outputting a first control signal and a second control signal; an electrical charge storage unit, coupled to the output terminal of the peak detector; and a charging unit and a discharge unit, the charging unit charging the electrical charge storage unit during a pre-determined charge duration in response to the first control signal to increase a voltage potential level of the peak signal, the discharge unit discharging the electrical charge storage unit during a pre-determined discharge duration in response to the second control signal to decrease the voltage potential level of the peak signal.