Apparatus for performing successive steps of simultaneous multi-level analog to digital conversion

摘要

An A/D converter including a first inverter having a linear characteristic and receiving an analog input voltage, a first quantizing circuit for quantizing the analog input voltage, a capacitive coupling to which an output of the first inverter and the first quantizing circuit are inputted, a second inverter receiving an output of the capacitive coupling and having the same characteristic of the first inverter, and a second quantizing circuit for receiving and quantizing an output of the second inverter. The A/D converter performs successive steps of quantizing/digitizing so as to achieve A/D conversion.