Bias generator
US4473793A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1981 |
| Grant date | Sep 25, 1984 |
| Priority date | — |
| Expiry date | Mar 26, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/907
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An improved bias generator provides a bias voltage output which is a function of an input current Iprog and provides a bias current to a preselected load which tracks the input signal independently of temperature. The amount the bias voltage output changes with temperature is determined by (1) V(T, Iprog), a voltage-current temperature dependent function of the base-emitter voltage drop of at least one transistor and (2) X, a scalar which is easily provided by setting the ratio of two resistors. The generator can therefore be easily constructed for particular circuit loads which include at least one semiconductive junction such that the biasing current through the load will be substantially independent of temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.