公开(公告)号：US20180309447A1

公开(公告)日：2018-10-25

申请号：US15849752

申请日：2017-12-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anurag ARORA ,  Hariharan NAGARAJAN ,  Sumantra SETH

IPC: H03K19/00 ,  H04L12/12

CPC classification number: H03K19/0016 ,  H04L12/12 ,  H04L12/40006

Abstract: A wakeup circuit includes an amplification stage circuit and a filter stage circuit. The amplification stage circuit is configured to, in response to receiving an input signal, generate an amplified digital signal that is proportional to the input signal. The filter stage circuit is configured to, in response to receiving a threshold number of toggles of the amplified digital signal within a pre-defined time period (such as one clock period of a clock signal), generate a wakeup signal as an output signal of the filter stage circuit.

公开(公告)号：US20190179398A1

公开(公告)日：2019-06-13

申请号：US15838593

申请日：2017-12-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anurag ARORA ,  Vikram SHARMA ,  Sumantra SETH

IPC: G06F1/32

Abstract: A wakeup circuit includes an energy detection circuit and a wakeup signal generation circuit coupled to the energy detection circuit. The energy detection circuit is configured to, in response to receiving an input signal, generate a detect signal that is proportional to the input signal. The energy detection circuit is powered by the input signal. The wakeup signal generation circuit is configured to, in response to receiving the detect signal, generate a wakeup signal.