Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1979-04-09
1981-06-23
Anagnos, Larry N.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307270, 307475, 307562, 3072381, H03K 19003, H03K 19094, H03K 1714, H03K 1920
Patent
active
042753139
ABSTRACT:
An IGFET push-pull driver circuit includes an output stage having pull-up and pull-down IGFETs for driving an output node. An inverter stage drives the gate of the pull-up IGFET. A current sensing IGFET biased to represent a resistance is coupled between the pull-up IGFET and the output node to provide a voltage drop which is proportional to the current flowing through the pull-up IGFET. A regulating IGFET with its channel coupled between the gate of the pull-up IGFET and the output node and with its gate coupled to the juncture of the pull-up IGFET and the current sensing IGFET, responds to the voltage drop across the current sensing IGFET to provide feedback control of the conductance of the pull-up IGFET. The maximum output current of the driver is limited to a value which remains substantially constant over a wide range of processing parameters, operating temperature and load impedance.
REFERENCES:
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patent: 3906255 (1975-09-01), Mensch, Jr.
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patent: 4016434 (1977-04-01), De Filippi
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patent: 4065678 (1977-12-01), Reese et al.
patent: 4096398 (1978-06-01), Khaitan
patent: 4101788 (1978-07-01), Baker
Hoffman, "On-Chip Signal Level Detector"; IBM Tech. Discl. Bull.; vol. 20, No. 9, pp. 3632-3633; 2/1978.
Boll Harry J.
Goldstein Richard M.
Anagnos Larry N.
Bell Telephone Laboratories Incorporated
Torsiglieri Arthur J.
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