公开(公告)号：US20220209755A1

公开(公告)日：2022-06-30

申请号：US17560090

申请日：2021-12-22

Applicant: POSTECH Research and Business Development Foundation

Inventor： Jae Yoon SIM ,  Ki Seo KANG

IPC: H03K4/02 ,  H03M1/66 ,  H03K5/01

Abstract: The present disclosure provides a device and method of generating a nonlinear waveform signal dissipating low power and operating at a high speed. The device includes: a digital preprocessing unit configured to quantize an effective input signal to generate a linear data signal and a residual signal that is a difference between the effective input signal and the linear data signal; a nonlinear digital-to-analog conversion circuit (DAC) having a nonlinear relationship between an input and an output and configured to convert the linear data signal into a first analog signal; a linear interpolation DAC configured to convert the residual signal into a second analog signal to enable a generation of a converted analog signal by an addition of the second analog signal to the first analog signal; and an output circuit configured to output the converted analog signal as a nonlinear waveform signal.