Differential amplification device
US10505500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2018 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Mar 29, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/375
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Provided is a differential amplification device reduced in DC offset voltage. The amplification device amplifies an input signal, and includes a chopper switch circuit which switches the polarity of the input signal between a normal phase and a reverse phase and outputs the input signal, a V-I conversion circuit which is connected to the chopper switch circuit, a capacitance circuit which is connected to the V-I conversion circuit to store electric charges supplied from the V-I conversion circuit, and an amplification circuit which is connected to the V-I conversion circuit to switch the polarity of an input signal between the normal phase and the reverse phase and amplify the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.