公开(公告)号：US20210066214A1

公开(公告)日：2021-03-04

申请号：US16552551

申请日：2019-08-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Abhijit Kumar DAS ,  Suman BELLARY ,  Clive BITTLESTONE

IPC: H01L23/00 ,  H01L23/522 ,  G06F21/72

Abstract: An integrated circuit device is provided. In some examples, an integrated circuit die of the device includes a first capacitor arranged such that when the integrated circuit die is coupled to a package, the package affects a capacitance of the first capacitor, a second capacitor disposed directly underneath the first capacitor, and a capacitance measurement circuit coupled to the first capacitor and the second capacitor to determine the capacitance of the first capacitor and a capacitance of the second capacitor. The integrated circuit device may detect tampering with the die and/or the package based on the capacitances of the first capacitor and the second capacitor.

公开(公告)号：US20230096787A1

公开(公告)日：2023-03-30

申请号：US17673224

申请日：2022-02-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Abhijit Kumar DAS

IPC: H03K5/24

Abstract: A device includes a first transistor (M1) having a control terminal that is a first comparator input, a first terminal that can be coupled to a voltage source, and a second terminal that provides a first comparator output; a second transistor (M2) having a control terminal that is a second comparator input, a first terminal that can be coupled to the voltage source, and a second terminal that provides a second comparator output; a third transistor (M3) having a control terminal coupled to M1, and a first terminal coupled to ground; a fourth transistor (M4) having a control terminal coupled to M2, and a first terminal coupled to ground; first switches that couple M3 second terminal to M3 control terminal, and M4 second terminal to M4 control terminal; and second switches that couple M3 second terminal to the M2 second terminal, and M4 second terminal to the M1 second terminal.