Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Nonlinear amplifying circuit
Patent
1998-09-02
2000-08-01
Cunningham, Terry D.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Nonlinear amplifying circuit
327561, 327563, 330 84, G06G 712, G06G 726
Patent
active
060972459
ABSTRACT:
A differential output amplifier arrangement (DOA) including two operational amplifiers (OA1,OA2), each having a feedback resistor (R2,R20), and which are coupled by a first resistor (R1) between similar polarity type input terminals, further includes a pair of output resistors (R3,R30), coupled between respective output terminals (OUT1,OUT2), of each respective operational amplifier, and corresponding respective output terminals (ZOUT1,ZOUT2) of said arrangement, and a pair of resistors (R4,R40), each of which is cross-coupled between a respective output terminal of said arrangement (ZOUT1,ZOUT2) and one of the two similar polarity type, by the first resistor coupled, input terminals (INN2,INN1) of the respective cross-coupled operational amplifier. A method for adapting the output impedance of a differential output amplifier arrangement is described as well.
REFERENCES:
patent: 3516006 (1970-06-01), Donjon
patent: 3982196 (1976-09-01), Poujois
patent: 4242741 (1980-12-01), Parrish
patent: 5315267 (1994-05-01), Chambers
"Aktiver Aufwartstransformator", Radio Fernsehen Elektronik, vol. 43, No. 8, Aug. 1, 1994 p. 63 XP000490847.
"Microelectronics: digital and analog circuits and systems" by J. Millman--ISBN nr 0-07-066410-2, Ed 1983, pp. 574-575. (A tutorial handbook).
Cornil Jean-Philippe Robert Adiel
Dobbelaere Philippe Guillaume
Jeanjean Fran.cedilla.ois
Verbist Rudi
Alcatel
Cunningham Terry D.
Tra Anh-Quan
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