Circuit configuration having a feedback operational amplifier
US7423482B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2006 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Dec 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45534
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a circuit configuration (10) having a feedback operational amplifier (AMP) for amplifying an input signal (Vin) input into the circuit arrangement (10) and outputting the amplified input signal as an output signal (Vout). The circuit amplification (Vout/Vin) may be changed by selectively connecting or disconnecting impedances (R1, . . . RN). Integration elements (INT1. . . INT N) connected upstream from each of the control inputs of transistors (S1, . . . SN) used for this purpose ensure a certain temporal smoothing of the curve of the circuit amplification (Vout/Vin) when connecting or disconnecting an impedance (R1, . . . RN). The integration element particularly ensures that even in the event of a sudden change of the affected activation signal (VD1, . . . VDN), the affected impedance (R1, . . . RN) is not also suddenly disconnected or connected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.