Digital analog converter

Details Digital analog converter Digital analog converter

1992-02-21

1993-12-28

Logan, Sharon D.

Coded data generation or conversion

Converter compensation

341144, 341146, 341154, H03M 106, H03M 172

Patent

active

052743730

ABSTRACT:
A digital/analog converter including four D/A conversion.
The D/A convertor comprises four D/A conversion parts (DA1) to (DA4). On a single semiconductor chip the D/A convertion parts (DA1) to (DA4) are arranged so that the D/A conversion parts (DA1) and (DA3) are symmetric with respect to a first center line (L1), the first and fourth D/A conversion parts (DA1) and (DA4) are arranged symmetric with respect to a second center line (L2) which crosses the first center line (L1) at right angles and the second and third D/A conversion parts are arranged symmetric with respect to the second center line. Although the locations of the resistances of each of the conversion parts produces errors, these cancel each other out due to their arrangement.

REFERENCES:
patent: 3982172 (1976-09-01), van de Plassche
patent: 3995304 (1976-11-01), Pease
patent: 4062013 (1977-12-01), Nagahama
patent: 4146882 (1979-03-01), Hoff, Jr. et al.
patent: 4658240 (1987-04-01), Bixby
patent: 4695826 (1987-09-01), Audo et al.
patent: 4791406 (1988-12-01), Mehrgardt et al.
patent: 4812818 (1989-03-01), Colles
patent: 5084701 (1992-01-01), Sauerwald

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