High-speed differential comparator

Details High-speed differential comparator High-speed differential comparator

1999-01-06

2000-08-08

Cunningham, Terry D.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 80, 327195, 327570, H03K 522, H03K 5153

Patent

active

061007234

ABSTRACT:
A high-speed differential comparator (300) is disclosed. A transconductance device is connected to the input terminal and the first and second output terminals (305 and 309, respectively) of the comparator. The transconductance device receives an input voltage (V.sub.IN) from the input terminal and generates a current between the first and second output terminals (305 and 309) in response to the input voltage. A load is connected between the first and second output terminals. The load, which includes a resonant tunneling diode (313), conducts the current and generates a voltage difference between the first and second output terminals (305 and 309) in response to the current. The comparator responds to input voltages at high speed and may be used for high frequency signal sampling and level determination.

REFERENCES:
patent: 5140188 (1992-08-01), Burns
patent: 5699010 (1997-12-01), Hatanaka
patent: 5973561 (1999-10-01), Heaton
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E. Ozbay, et al., "110-GHz Monolithic Resonant-Tunneling-Diode Trigger Circuit", 1991 IEEE, pp. 480-482.

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