Voltage-to-current converter
US7514999B2 · kind B2 · utility
3Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 2006 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | May 1, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/331
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Circuits and methods to achieve a voltage-to-current converter having low noise and a high linearity are disclosed. In a preferred embodiment the converter has been used as a Gm integrator. The core of the invention is an operational transconductance amplifier (OTA) having additional DC current sources allowing a common mode voltage shift. The feedback currents and output currents are decoupled by means of current mirrors. The feedback currents are higher than the output currents thus allowing lower integration resistor size. A common mode decoupling of input and output has been achieved by current mirrors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.