公开(公告)号：US11133143B2

公开(公告)日：2021-09-28

申请号：US16585259

申请日：2019-09-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Masahiro Yoshioka ,  Muhammad Yusuf Ali ,  Kevin Ryan Duke

IPC: H03M1/06 ,  H01H83/04 ,  G05F1/56

Abstract: A two-wire current loop system includes a current loop with a transmitter and a host. The system also includes a monolithic integrated circuit included with the transmitter. The monolithic integrated circuit includes: 1) a power supply terminal coupled to the current loop; 2) a loop ground terminal coupled to the current loop and configured to output a current to the current loop; 3) device circuitry with a power supply node and an internal ground node, wherein the power supply node is coupled to the power supply terminal; and 4) a reverse wiring protection circuit coupled between the internal ground node of the device circuitry and the loop ground terminal.