Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1997-05-16
1998-12-22
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 80, 327195, H03K 5153, H03K 3315
Patent
active
058523740
ABSTRACT:
A resettable latched voltage comparator includes a resonant tunneling diode 10 connected in series with an amplifier 14 and a power source 16, and a reset circuit 12 connected between a circuit output terminal 18 and a second power source 20. Amplifier 14 converts the value of the voltage at an input terminal 22 into a proportional current at terminal 24; diode 10 detects the condition when the current at terminal 24 rises above a specific value equal to the resonant peak current of resonant tunneling diode 10; and reset circuit 12 controllably forces the voltage at terminal 18 of the circuit to a value approximately equal to the output voltage of power source 16 at terminal 29, thereby reducing the bias across diode 10 to approximately zero. A flash analog-to-digital converter configuration includes a plurality of comparators 200.sub.i having their reference voltage inputs biased from a series-connected chain of resistors 210.sub.i. The input terminals 22.sub.i of the comparators are coupled for connection to an analog signal source, and the comparator reset terminals 25.sub.i are coupled for connection to a reset control source.
REFERENCES:
patent: 3553496 (1971-01-01), Weiss
patent: 3668426 (1972-06-01), Culver
patent: 4868418 (1989-09-01), Imamura et al.
patent: 5140188 (1992-08-01), Burns
patent: 5721503 (1998-02-01), Burns et al.
Brady III W. James
Donaldson Richard L.
Maginniss Christopher L.
Texas Instruments Incorporated
Tran Toan
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