Current sensing differential amplifier

Details Current sensing differential amplifier Current sensing differential amplifier

1987-03-09

1988-08-23

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307355, 307494, 307497, 330253, 330258, H03K 524

Patent

active

047663332

ABSTRACT:
An amplifier for a semiconductor circuit provides two circuit paths between VCC and ground, each including the source-drain path of a corresponding primary transistor. Two inpedances are coupled to respective inputs. The primary transistors are kept in saturation so that the voltage differential between the inputs is minimized but a large voltage differential is developed at outputs located along the two circuit paths. Also, a clamp circuit has a common node coupling the gate electrodes of the primary transistors together. Secondary transistors are included to mimic voltage changes on either input.

REFERENCES:
patent: 3656003 (1972-04-01), Chen et al.
patent: 3876887 (1975-04-01), Reed
patent: 3940747 (1976-02-01), Kuo et al.
patent: 4150311 (1979-04-01), Matsuda et al.
patent: 4250412 (1981-02-01), Kung et al.
patent: 4355377 (1982-10-01), Sud et al.
patent: 4468628 (1984-08-01), Gross
patent: 4523110 (1985-06-01), Johnson
Millman, MicroElectronics, Sections 15-5, 15-6 (1979).
Calvert et al., Electronics, Sections 10.8, 10.9 (1978).
Glaser et al., Integrated Circuit Engineering, pp. 495-499, 508-511 (1979).

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