Sensing circuit
US8441266B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2009 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Mar 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sensing circuit for comparing current flow through a reference resistance with current flow through a resistive device under test (DUT) such as a fuse. The sensing circuit includes a comparator having a first PMOS transistor and a first NMOS transistor connected in series between a first input and a first node and a second PMOS transistor and a second NMOS transistor connected in series between a second input and the first node. The first PMOS and NMOS transistors are cross-coupled with the second PMOS and NMOS transistors. Specifically, a first output is connected to the first node to the gates of the second PMOS and second NMOS transistors and a second output is connected to the second node and to the gates of the first PMOS and first NMOS transistors. The reference resistance is connected to one of the inputs and the DUT is connected to the other input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.