amplifiers that are configured with diodes to perform a peak detector function high speed comparators unlike standard operational amplifiers do not suffer from slow propagation due to saturation high speed comparators exhibit the ability to accurately measure smaller voltages than standard operational amplifiers configured with diodes to perform a peak detector function moreover high speed comparators function with greater accuracy with regard to varying crest factors of waveforms than standard operational amplifiers configured with diodes to perform a peak detector function the non inverting input 141 of the first comparator 140 may receive a voltage of an ac waveform from a voltage input 144 the ac waveform may exhibit a frequency of for example 150 khz 1 mhz or 50 mhz the first translator 145 may include an input 146 and an output 147 the input 146 of the first translator 145 may be coupled to the output 143 of the first comparator 140 the first translator 145 may level shift the voltage provided from the output 145 of the first comparator 140 the level shift may be from ecl to ttl logic levels typical ttl logic levels include 0v to 0 4v for logic low and 2 4v to 5v for logic high the first translator 145 may be omitted from the positive peak subcircuit 110 if the first comparator 140 provides a ttl or cmos level output voltage the first high speed diode 148 may be coupled to the output 148 of the first translator 145 the first high speed diode 148 may have a fast propagation rate an example of a high speed diode is a schottky diode a schottky diode has the ability to switch at high frequencies without degrading the amplitude.