Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1991-08-07
1992-08-25
LaRoche, Eugene R.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330257, 330288, H03F 345, H03F 316
Patent
active
051422425
ABSTRACT:
A transconductance amplifier intended for high frequency, precision amplification. The amplifier has a unique architecture that sets gain by the ratio of two impedances. Unlike conventional amplifiers, the amplifier does not use external feedback. This makes the amplifier unusually stable since one needn't worry about phase shift due either to the amplifier or a feedback network. Consequently, the amplifier can be used in some rather unusual circuit applications, some of which would be impossible with conventional (feedback) amplifiers. Various embodiments are disclosed.
REFERENCES:
patent: 3921090 (1975-11-01), Wheatley et al.
patent: 4912423 (1990-03-01), Milkovic et al.
patent: 4954769 (1990-09-01), Kalthoff
patent: 5028881 (1991-07-01), Spence
Dinh Tan
LaRoche Eugene R.
Maxim Integrated Products
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