Depletion-mode circuit
US8610489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2012 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | May 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0054
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This document discloses, among other things, a switch circuit that includes a depletion-mode field-effect transistor (DMFET) having an ON-state and an OFF-state, wherein the DMFET is configured to couple a first node to a second node in the ON-state, and wherein the DMFET is configured to isolate the first node from the second node in the OFF-state, a negative charge pump that is coupled to a gate terminal of the DMFET, the charge pump configured to supply a negative charge pump voltage to the gate terminal of the DMFET, and a negative discriminator coupled to the charge pump, the discriminator configured to compare a first voltage at the first node and a second voltage at the second node and determine the negative charge pump voltage based on the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.