Patent ID: 6208282
Filing Date: 2001-03-27
Classification: G06F,H03K,H03M

Abstract:
An analog/digital converter having an input terminal, for which analog input is provided and N (N is a plural number) bits output terminals, for which binary output is provided comprising:N unit circuits arranged in parallel, each includingan input capacitor having one electrode connected to said input terminal,a first inverter connected to the other electrode of said input capacitor, anda second inverter connected to said first inverter,wherein outputs of said second inverters of said unit circuits are respectively provided for said output terminals,inverted outputs of said outputs for said unit circuits are fed back via feedback capacitors to inputs of said first inverters of said unit circuits respectively corresponding to lower bits, anda capacitance of said feedback capacitor, which corresponds to said inverted output of the M-th (M is an integer) unit circuit from the most significant bit, is of 1/2.sup.M of a capacitance of said input capacitor of said unit circuit that is fed back.