Analog/digital converter operating by the expanded parallel meth

Details Analog/digital converter operating by the expanded parallel meth Analog/digital converter operating by the expanded parallel meth

1991-02-14

1991-12-10

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341134, 341144, H03M 114

Patent

active

050722204

ABSTRACT:
An analog/digital converter assembly includes a first analog/digital converter having N-bit resolution, operating by the parallel method and having comparators. A sample and hold element is connected upstream of the first analog/digital converter. A second analog/digital converter has M-bit resolution, operates by the parallel method and has comparators. A digital/analog converter is connected upstream of the second analog/digital converter. A subtractor is connected to the digital/analog converter and to the sample and hold element. An amplifier is connected downstream of the subtractor. Output signals of the comparators of the first analog/digital converter are provided directly with a 1.sup.x out of 2.sup.N code for triggering the digital/analog converter. The same reference voltage is applied to both the first analog/digital converter and the digital/analog converter.

REFERENCES:
patent: 3597761 (1971-08-01), Fraschilla et al.
patent: 3721975 (1973-03-01), Brinkman et al.
patent: 4214232 (1980-07-01), Shaw et al.
patent: 4663610 (1987-05-01), Metz et al.
patent: 4684924 (1987-08-01), Wood
patent: 4774497 (1988-09-01), Taylor
patent: 4862171 (1989-08-01), Evans
patent: 4875048 (1989-10-01), Shimizu et al.

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