Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1987-10-28
1990-11-13
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307448, 307450, 307468, 3072961, 3072965, 307264, 3072966, H03K 1716, H03K 1920, H03K 301, G06F 738
Patent
active
049704133
ABSTRACT:
A V.sub.BB input threshold potential with feedback circuitry is used to stabilize all of the logic inputs on an GaAs IC to ECL compatible levels over a normal temperature range and normal power supply variations. The system called "V.sub.BB -Feedback" uses "zero translation delay" direct Capacitor Diode Fet Logic (CDFL) inputs. This is an extension of the CDFL circuit approach in which the voltage across the input level shift circuitry on all inputs is adjusted to maintain a threshold voltage equal to the dc potential on an "extra" V.sub.BB input in spite of variations of temperature, power supply voltages or processing parameters such as MESFET pinchoff voltage. A dc potential (V.sub.BB) is applied to the "extra" V.sub.BB input, which is an additional input that is essentially identical to the actual logic inputs. All of the logic input threshold voltages are then slaved to the V.sub.BB dc potential applied to the "extra" V.sub.BB input. ECL compatability is accomplished by combining a reasonably compliant, but uniform, CDFL voltage shifter with feedback circuitry to maintain the shift voltages at proper levels thereby achieving the desired input logic threshold.
REFERENCES:
patent: 4423339 (1983-12-01), Seelbach et al.
patent: 4558235 (1985-12-01), White et al.
patent: 4631426 (1986-12-01), Nelson et al.
patent: 4651333 (1987-03-01), Cappon
patent: 4661726 (1987-04-01), Biard
patent: 4663543 (1987-05-01), Sitch
patent: 4697110 (1987-09-01), Masuda et al.
McLeod, "The First GaAs Compiler is already Producing Chips", Electronics, Apr. 30, 1987.
Clark John E.
Eden Richard C.
Fiedler Alan S.
Lee Frank S.
Miller Robert
Gigabit Logic
Miller Stanley D.
Phan Trong Quang
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