Integratable amplifier circuit

Details Integratable amplifier circuit Integratable amplifier circuit

1990-04-09

1991-05-14

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330259, H03F 345

Patent

active

050159674

ABSTRACT:
An integratable amplifier circuit includes a differential amplifier stage having a non-inverting input being acted upon by a first reference potential, an inverting input being acted upon by an input current, a non-inverting output, and an inverting output. A capacitor is connected between the non-inverting output and ground potential. A current source is connected between the inverting output and a supply potential. A first transistor of one conduction type has a collector connected to the supply potential, a base connected to the non-inverting output, and an emitter. A second transistor of the other conduction type has a collector connected to the inverting input, a base being acted upon by a second reference potential, and an emitter. A resistor is connected between the emitters of the first and second transistors.

REFERENCES:
patent: 3968361 (1976-07-01), Bumgardner
patent: 4042886 (1977-08-01), Hanna
patent: 4092611 (1978-05-01), Frederiksen et al.
patent: 4481480 (1984-11-01), Metz
patent: 4689580 (1987-08-01), Fukuda et al.

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