PEAK DETECTOR CIRCUIT AND AN ELECTRONICS SYSTEM THAT INCLUDES THE PEAK DETECTOR CIRCUIT

A peak detector circuit includes: a single operational amplifier having a non-inverting input, an inverting input, and an output; an output capacitor; a first diode having an anode electrically coupled to the output of the single operational amplifier and a cathode electrically coupled to the output capacitor; an RC feedback network electrically coupled between the output capacitor and the inverting input of the single operational amplifier; and a second diode having an anode electrically coupled to the inverting input of the single operational amplifier and a cathode electrically coupled to the anode of the first diode. An electronics system that includes the peak detector circuit is also described.