Semiconductor integrated circuit
US6201378A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1999 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Apr 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4099
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor integrated circuit producing a given output voltage includes first and second operational amplifiers, and first and second transistors. The first and second operational amplifiers detect a voltage difference between a voltage applied to an input terminal and at least one reference voltage. The first and second transistors are turned ON or turned OFF according to the levels of voltages output from the first and second operational amplifiers. The first operational amplifier receives the output voltage at the input terminal. When the level of the output voltage becomes lower than the reference voltage, the first operational amplifier allows the first transistor to operate so as to raise the output voltage. In contrast, the second operational amplifier receives the output voltage at the input terminal. When the level of the output voltage exceeds the reference voltage, the second operational amplifier allows the second transistor to operate so as to lower the output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.