Subranging analog-to-digital converter with priority weighted co

Details Subranging analog-to-digital converter with priority weighted co Subranging analog-to-digital converter with priority weighted co

1992-02-14

1993-06-29

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

H03M 114

Patent

active

052238369

ABSTRACT:
In an analog/digital conversion circuit, selection signals XA, XB and XC inputted from a lower order comparing circuit unit 5 are assigned priority by weighting the same, in a selection signal weighting circuit 11. When a plurality of the selection signals XA, XB and XC are raised up to an "H", in that, (XA, XB, XC), (XA, XB), (XA, XC) or (XB, XC), line signals SC, SB, and corresponding to weighted selection signals having a higher priority XBO, and XAO are outputted as a higher order conversion code data D1. Thereby a more reliable signal is outputted as the higher order conversion code even if an erroneous operation is caused in the lower order comparing circuit unit 5 and the accuracy of the analog/digital conversion circuit is further enhanced in comparison with the conventional ones.

REFERENCES:
patent: 4903028 (1990-02-01), Fukushima
patent: 4939517 (1990-07-01), Baltus et al.
patent: 5083126 (1992-01-01), Komatsu et al.
patent: 5099240 (1992-03-01), Nakatani et al.

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