High data rate envelope detector for high speed optical storage application

A high-speed optical storage system that generates an output signal based on encoded data, the output signal including a detected peak level of the encoded data, the system comprising:

• a laser configured to generate an input signal indicative of one or more peak levels of the encoded data;
• and
• a circuit that comprises:
• an amplifier configured to generate an amplified differential signal representing one or more amplified differences between the input signal and a feedback signal;
• and
• a capacitance in communication with the feedback signal, wherein for each of a plurality of charging periods and associated discharging periods of the capacitance, the capacitance is configured to be:
• charged to one of one or more levels based on the one or more amplified differences, each of the one or more levels identifying one of the one or more peaks levels;
• and
• discharged from the one of the one or more levels to one of one or more reset levels, each of the one or more reset levels being lower than a minimum peak level of the one or more peak levels of the encoded data,
• wherein the discharge of the capacitance is responsive to a reset signal, the reset signal having a programmable duration based on N×T, wherein T is a cycle time of the incoming signal and N is an integer greater than zero,
• wherein the amplifier is responsive to the charge across the capacitance.