Level shift circuit
US7737758B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 22, 2008 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Dec 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45682
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier including the transistors of a first set operates by a power source VCC2, and amplifies the input signal, changing in the voltage range of the power source VCC2, in the voltage range of the power source VCC2. The output of this amplifier operates using a power source VCC1 with a converting portion including the transistors of a second set, and the output of the amplifier is converted into an output within the voltage range of the power source VCC1. The two output amplifiers amplify the output of this converting portion based on a (½) VCC1 reference. The converting portion performs the conversion using a plurality of transistors with the power source VCC2 taken as a power source and a plurality of transistors 7 with the power source VCC1 taken as a power source, as current mirrors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.