Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1996-10-03
1998-06-30
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
320145, 320163, 323280, 323285, 323315, 330288, H03F 345, H02J 700, G05F 326
Patent
active
057740216
ABSTRACT:
Operational transconductance amplifiers (OTAs) are combined at their outputs, yielding a single frequency compensation connection point. In a preferred embodiment, the output of each OTA is asymmetric, i.e., they can only source current and the OTA outputs are tied together to a constant current sink. Consequently, the OTA that sources more current controls the voltage of the merged output. This merged output point provides a voltage output that may be used as a frequency compensation point.
REFERENCES:
patent: 4339729 (1982-07-01), Jason et al.
patent: 4585961 (1986-04-01), Daubert
patent: 5254930 (1993-10-01), Daly
Chester Simpson, "Rechargeable Lithium Cells; Power To Burn For Portables", Electronic Design, Jun. 27, 1984, pp. 39-44.
Paul Horowitz, Windfield Hill, The Art of Electronics, Cambridge University Press, New York, 1989, pp. 242-250, 355-359 and 374.
Bowers Derek F.
Buxton Joseph C.
Szepesi Thomas S.
Zansky Zoltan
Analog Devices Inc.
Mullins James B.
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