Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1994-04-08
1996-01-09
Mottola, Steven
Amplifiers
With semiconductor amplifying device
Including differential amplifier
323313, H03F 345
Patent
active
054831962
ABSTRACT:
An amplifier includes in series, between high and low supply voltages, first, second, and third transistors. The first transistor is an input transistor of a first current mirror, and the second transistor is an output transistor of a second current mirror. The control electrode of the third transistor forms an inverting input of the amplifier. The amplifier further includes, in series between the high and low supply voltages, fourth, fifth, and sixth transistors. The fourth transistor is an output transistor of the first current mirror, and the fifth transistor is an input transistor of the second current mirror. The control electrode of the sixth transistor forms a non-inverting input of the amplifier. The output current of the amplifier is provided by a seventh transistor. The amplifier is applied to form a band-gap voltage generator having a small number of circuit branches.
REFERENCES:
patent: 4029974 (1977-06-01), Brokaw
patent: 4450367 (1984-05-01), Whatley
patent: 4524318 (1985-06-01), Burnham et al.
patent: 5087830 (1992-02-01), Cave et al.
patent: 5124666 (1992-06-01), Liu et al.
patent: 5126653 (1992-06-01), Ganesan et al.
IEEE Journal of Solid-State Circuits, vol. 24, No. 3, Jun. 1989, New York, U.S., pp. 690-697, M. Ferro, et al., "A Floating CMOS Bandgap Voltage Reference For Differential Applications".
Patent Abstracts of Japan, vol. 10, No. 154 (P-463)(2210) Jun. 4, 1986 & JP-A-61 006 717.
Mottola Steven
SGS-Thomson Microelectronics S.A.
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