Digital-to-analog converter

Details Digital-to-analog converter Digital-to-analog converter

1980-06-30

1981-07-28

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, H03K 1311

Patent

active

042813190

ABSTRACT:
A bipolar converter for analog and digital conversion is based on a single-ended MOS chip having a grounded substrate. The MOS chip includes a 2.sup.N R ladder and an on-chip output polarity switch which establishes the polarity and range of a separate bipolar output amplifier while it minimizes the number of power supplies. The resolution of the MOS chip is effectively doubled without substantially increasing element count. A matrix decoder is employed in a tree decoder to minimize the physical size and element count of the tree decoder.

REFERENCES:
patent: 3475749 (1969-10-01), Plice
patent: 4160244 (1979-07-01), Solomon
patent: 4196420 (1980-04-01), Culmer
patent: 4198622 (1980-04-01), Connolly
patent: 4200863 (1980-04-01), Hodges
Check, "Electronics", May 25, 1978, pp. 122-127.
Hamade, "IEEE Journal of Solid-State Circuits", vol. SC-13, No. 6, Dec. 1978, pp. 785-791.
Redfern, "Electronics", Sep. 13, 1979, pp. 134-139.

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