Differential amplifier circuit
US6252457A · kind A · utility
4Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1999 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Dec 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45702
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Emitters of a first NPN transistor and a second NPN transistor forming a differential input section are respectively connected to collectors of a third NPN transistor and a fourth NPN transistor; the collectors and bases of the third NPN transistor and the fourth NPN transistor are respectively connected through first and second capacitors; and the bases of the third NPN transistor and the fourth NPN transistor are respectively connected to a first reference power source through first and second resistors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.