Fault detection algorithm for successive-approximation A/D conve

Details Fault detection algorithm for successive-approximation A/D conve Fault detection algorithm for successive-approximation A/D conve

1986-03-31

1987-07-07

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, 371 25, N03M 110

Patent

active

046790284

ABSTRACT:
An improved fault detect algorithm and circuit is disclosed which quickly evaluates substantially all the elements within a successive approximation A/D convertor without resorting to off-line measurements. This method utilizes a small alternating offset signal injected into the correction loop in addition to the already converted value to determine whether the elements within this loop are operating properly for any in range analog input value.

REFERENCES:
patent: 4228423 (1980-10-01), Schwerdt
patent: 4266292 (1981-05-01), Regan et al.
patent: 4308524 (1981-12-01), Harrison et al.
patent: 4419656 (1983-12-01), Sloane
patent: 4490713 (1984-12-01), Mrozowski et al.
patent: 4498072 (1985-02-01), Moriyama
patent: 4539683 (1985-09-01), Hahn et al.
Buhler, "Analog to Digital Converter Checking Circuit", IBM Technical Disclosure Bulletin, vol. 22, No. 8B, Jan. 1980, pp. 3618-3619.

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