US Patent 12107593 High-speed high-resolution analog-to-digital converter

An analog-to-digital converter of one embodiment in the present disclosure may comprise a first conversion unit generating an internal clock signal, generating a first digital code and a residual signal by converting an input signal in a successive approximation register (SAR) method in response to the internal clock signal and generating a flash clock signal in response to an external clock signal, a second conversion unit generating a second digital code by converting the residual signal in a flash method in response to the flash clock signal, and an output circuit generating an output digital signal in response to the first digital code and the second digital code.