公开(公告)号：US11293954B2

公开(公告)日：2022-04-05

申请号：US16363779

申请日：2019-03-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Naman Gupta ,  Rajat Chauhan ,  Santhosh Kumar Srinivasan

IPC: G01R19/165 ,  G01R31/382 ,  G05F3/26 ,  H03K3/037

Abstract: Aspects of the disclosure provide for a circuit. In some examples, the circuit includes a Zener diode, a first current source, a first n-type field effect transistor (FET), a first inverter circuit, and a second current source. The Zener diode has a cathode coupled to a first node and an anode coupled to a second node. The first current source has a first terminal coupled to the second node and a second terminal coupled to a ground terminal. The first n-type FET has a gate terminal coupled to the second node, a source terminal coupled to the ground terminal, and a drain terminal coupled to a third node. The first inverter circuit has an input coupled to the third node and an output coupled to a fourth node. The second current source has a first terminal coupled to a fifth node and a second terminal coupled to the third node.