Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-06-20
1993-04-27
Dzierzynski, Paul M.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307540, 365207, 365208, G01R 1900
Patent
active
052065502
ABSTRACT:
An amplifier is arranged with an actively clamped load. In a differential amplifier, a pair of emitter-coupled transistors has loads connected between the collectors and a voltage supply. Separate clamping transistors have their collector-emitter paths connected across respective ones of the loads. A clamping control circuit, responsive to an input signal, produces a variable control signal to clamp output signal swings across the loads. A similar clamping control circuit can be used with a single-ended amplifier. Such an amplifier having an actively clamped load is useful in sense amplifier circuit arrangements in semiconductor memory arrangements used in data processing systems.
REFERENCES:
Kertis, Robert A. et al., A 12-ns ECL I/O 256K.times.1-bit SRAM Using a 1-.mu.m BiCMOS Technology, IEEE Journal of Solid-State Circuits, vol. 23, No. 5, Oct. 1988, pp. 1048-1053.
Gallia, James D. et al., High-Performance BiCMOS 100K-Gate Array, IEEE Journal of Solid-State Circuits, vol. 25, No. 1, Feb. 1990, pp. 142-149.
Wakimoto, Tsutomu, A Low-Power Wide-Band Amplifier Using New Parasitic Capacitance Compensation Technique, IEEE Journal of Solid-State Circuits, vol. 25, No. 1, Feb. 1990, pp. 200-206.
Itoh, Kiyoo, Trends in Megabit DRAM Circuit Design, IEEE Journal of Solid-State Circuits, vol. 25, No. 3, Jun. 1990, pp. 778-789.
Akioka, Takashi et al., A 6-ns 256-kb BiCMOS TTL SRAM, IEEE Journal of Solid-State Circuits, vol. 26, No. 3, Mar. 1991, pp. 439-443.
Donaldson Richard L.
Dzierzynski Paul M.
Havill Richard B.
Heiting Leo N.
Ratliff R. A.
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