Current sense amplifier with low, nonlinear input impedance and high degree of signal amplification linearity
US4887047A · kind A · utility
20Cited by
9References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Sep 30, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3211
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A current sense amplifier includes first and second current mirrors cross-coupled to collectors of first and second transistors having a common base connection to a bias voltage circuit. First and second load devices are connected to the collectors of the first and second transistors, the emitters of which are connected to control transistors of the second and first current mirrors, respectively. The control transistors also receive first and second input currents, respectively. The collectors of the first and second transistors are connected to output terminals of the current sense amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.