Amplification circuit and analog/digital conversion circuit
US9634627B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2016 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Mar 9, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/468
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, an amplification circuit includes a differential amplifier and a feedback circuit. The differential amplifier includes a sampling circuit that samples a first voltage which is a difference between an adjustment voltage supplied to a first terminal and a first input voltage, and a second voltage which is a difference between the adjustment voltage and a second input voltage. The differential amplifier amplifies the first voltage to output a first voltage signal and amplifies the second voltage to output a second voltage signal. The feedback circuit detects a common mode voltage of the first voltage signal and the second voltage signal, and adjusts the adjustment voltage which is supplied to the first terminal in accordance with the common mode voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.