Comparator with cascaded latches

Details Comparator with cascaded latches Comparator with cascaded latches

1986-05-23

1987-09-01

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

307362, H03M 134

Patent

active

046911898

ABSTRACT:
In a comparator circuit, first and second latchable circuits are connected in cascade between the output of an amplifying stage and the input of a decoder to enable the comparator to operate at significantly higher frequencies with lower error levels. An input signal, to be sampled, and a reference signal are applied to the input of the amplifying stage and a "sampled" signal indicative of the difference between the input and the reference is produced at the output of the amplifying stage. The "sampled" signal produced at the output of the amplifying stage is first processed, via the first latchable circuit operated in a regenerative mode to enhance the signal, during one time interval. The enhanced signal is then processed via the second latchable circuit operated in a regenerative mode tending to further enhance the signal, during a second, succeeding, time interval, for application to the decoder.

REFERENCES:
patent: 4613777 (1986-09-01), Kible

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