公开(公告)号：US20200382131A1

公开(公告)日：2020-12-03

申请号：US16730612

申请日：2019-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Keliu SHU ,  Gary Franklin CHARD ,  William Robert KRENIK

IPC: H03M1/66 ,  G06F1/03 ,  H03M1/06

Abstract: A circuit includes a phase-locked loop having a phase-locked loop output to provide a first phase signal and a second phase signal phase delayed with respect to the first phase signal. The circuit further includes a digital circuit having a digital circuit input and an output. The digital circuit input couples to the phase-locked loop output. On the digital circuit output, the digital circuit is configured to provide a first digital-to-analog converter (DAC) enable signal and a second DAC enable signal. The circuit also includes first and second DACs. The first DAC is coupled to the digital circuit. The first DAC has a first enable input coupled to the digital circuit output to receive the first DAC enable signal. The second DAC is coupled to the digital circuit. The second DAC has a second enable input coupled to the digital circuit output to receive the second DAC enable signal.