Analog-to-digital converter having reduced circuit area

Details Analog-to-digital converter having reduced circuit area Analog-to-digital converter having reduced circuit area

1993-12-09

1997-01-28

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341156, 327 75, H03M 136, H03M 114

Patent

active

055981615

ABSTRACT:
In an analog-to-digital converter, a plurality of divided output currents are produced by dividing at a predetermined ratio each of a plurality of comparison output currents that are produced for each reference potential, and an output voltage generated by each divided comparison output current is further divided by an output means into a plurality of output voltages. A combination of output voltages which are in reversed-phase, and the relationship of which in magnitude is reversed at an intermediate potential between first and second reference potentials, is selected from the plurality of output voltages produced by the above division. According to this construction, comparison outputs of an input analog signal with respect to arbitrary virtual potentials between the two reference potentials actually given can easily be obtained.

REFERENCES:
patent: 4897656 (1990-01-01), van de Plassche et al.
patent: 4924227 (1990-05-01), Mangelsdorf
patent: 4928103 (1990-05-01), Lane
patent: 5384569 (1995-01-01), Komatsu

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