Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1984-10-01
1987-02-24
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307297, 307571, 307310, 357 51, H03K 301, H03K 17687, H03K 326
Patent
active
046459480
ABSTRACT:
A field effect transistor circuit generates a reference current that can obtain a desired temperature coefficient. The circuit is self-compensatory with respect to process variations, in that a "slow" process will produce a higher than normal current, while a "fast" process will give a lower one. This results in a tight spread of slew-rate, gain, gain-bandwidth, etc. in opamps, comparators, and other linear circuits. A simple adjustment in the circuit allows the temperature coefficient to be made positive or negative if so desired. An illustrative circuit is shown for CMOS technology, but can be applied to other field effect technologies.
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Morris Bernard L.
Nagy Jeffrey J.
Walter Lawrence A.
AT&T Bell Laboratories
Davis B. P.
Fox James H.
Miller Stanley D.
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