OFFSET STACKED COMPRESSOR AMPLIFIERS IN A DISCRETE DIGITIZER SYSTEM FOR NOISE REDUCTION AND INCREASED RESOLUTION

摘要

A test and measurement instrument, including a splitter configured to split an input signal into two split input signals and output each split input signal onto a separate path and a combiner configured to receive and combine an output of each path to reconstruct the input signal. Each path includes an amplifier configured to receive the split input signal and to compress the split input signal with a sigmoid function, a digitizer configured to digitize an output of the amplifier; and at least one processor configured to apply an inverse sigmoid function on the output of the digitizer.