US Patent 10164653 Analog to digital converter

An analog-to-digital converter (“ADC”) includes receiving an analog input voltage signal, converting the analog input voltage signal to a first digital value and an analog residue signal, converting the analog residue signal to a time value representing the analog residue signal, and converting the time value to a second digital value. The first digital value and the second digital value are combined into a digital output signal representing the analog input voltage signal.