Piece-wise linear approximation of a dB linear programmable gain amplifier
US5703524A · kind A · utility
8Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1996 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Apr 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06G7/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A programmable gain amplifier which can be realized using CMOS transistors. The amplifier provides a plurality of linear gain segments, with each of the gain segments having a different gain. A particular combination of the gain segments are selected using a digital control input to give an approximation of a linear dB output. By appropriately choosing the segments and how they combine, an approximation that is accurate to the least significant bit of a digital system can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.