Circuit arrangement for amplifying a differential voltage signal which has a substantially temperature independent characteristic curve
US6177840A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1999 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Feb 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/45479
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit arrangement for amplifying a differential voltage signal in an output signal proportional to a voltage difference is provided, the voltages of a signal source that are to be compared being present at two inputs of the circuit arrangement, and a current signal proportional to the voltage difference being present at one output of the circuit arrangement, the circuit arrangement comprising cross-coupled transistors and the inputs being respectively connected to the base of one of the transistors, and a cross current of the circuit arrangement being present at the output. A compensation circuit is provided having a temperature behavior which corresponds to the temperature behavior of cross resistances of the circuit arrangement, the compensation circuit being associated with each of the inputs of the circuit arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.