Apparatus and method for a low-voltage supply low-power variable gain amplifier
US7061319B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 2004 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Jul 6, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45652
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low-voltage supply low-power variable gain amplifier is shown that includes an input control circuit for receiving input signals, a variable gain amplifier (VGA) coupled to the input control circuit, and a circuit output terminal. A differential transconductor is interposed between the input control circuit and the VGA. The VGA amplification of the differential transconductor output is controlled by a gain control voltage signal. A differential amplifier is interposed between the input control circuit and the differential transconductor, where the differential amplifier receives and amplifies the input signal to produce an amplified input signal. An output filter is interposed between the VGA and the circuit output terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.