Amplifier array termination
US6822600B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2004 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Mar 30, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/361
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and circuit for terminating a pre-amplification array for stable linearity of a folding or flash analog-digital-converter (ADC) circuit over a temperature range. Termination resistors with pre-selected temperature coefficients are coupled between outputs of a first and a last amplifier of an amplifier bank in an averaged pre-amplification stage and a termination voltage source. The termination resistors and the termination voltage provide a current that compensates temperature dependent changes in the current flowing from other amplifiers outputs towards the output of the first and last amplifiers stabilizing linearity when temperature changes. Multiple termination resistors with different temperature coefficients may be employed to better approximate the desired temperature coefficient for optimum performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.