High-speed lever shifter with AC feed-forward
US7129752B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2005 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Apr 28, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/356113
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An improved level shifter circuit with AC feed-forward is disclosed. The integrated circuit device includes a first circuit part biased from a lower voltage supply and a second circuit part biased from a higher voltage supply. One of the circuit parts has an RS flip-flop with two complementary signal outputs and the other one has a signal input and a first and a second switching transistor. The first and the second switching transistors each have a current channel DC coupled in series with a respective cascode-connected transistor which is connected to a respective one of the signal outputs. One of these outputs is coupled to the input through a first feed-forward AC series circuit of an inverter and a first coupling capacitor, and the other output is coupled to the input through a second feed-forward AC circuit including a second coupling capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.