Multiple input port circuit having temperature zero voltage offs

Details Multiple input port circuit having temperature zero voltage offs Multiple input port circuit having temperature zero voltage offs

1983-02-28

1986-05-27

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307490, 307296R, 307243, H03K 326, H03K 1756, G06G 712

Patent

active

045917400

ABSTRACT:
A plurality of input stages having their outputs connected to provide differential currents to a load. When a bias current flows through a selected one of the input stages, the differential currents are provided in response to a differential signal provided to the selected stage. The input stages are each comprised of a pair of emitter-coupled transistors. Resistors are connected in series with the emitters of the transistors and the bias current is directly proportional to absolute temperature. The resistors may be adjusted to cause the offset voltages of the input stages to substantially equal zero at all temperatures.

REFERENCES:
patent: 3092732 (1963-06-01), Milford
patent: 3166679 (1965-01-01), Paufve
patent: 3526785 (1970-01-01), Biri
patent: 4037118 (1977-07-01), Sieborger et al.
patent: 4198581 (1980-04-01), Ahmed
patent: 4349750 (1982-09-01), Geurts

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