High accuracy digital-to-analog converter

Details High accuracy digital-to-analog converter High accuracy digital-to-analog converter

1982-05-24

1984-08-14

Miller, C. D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347CC, H03K 1302

Patent

active

044659962

ABSTRACT:
A high accuracy monolithic digital to analog converter (DAC) which employs an EPROM controlled correction DAC to correct for errors in the output of a primary DAC. The correction DAC empolys a non-binary bit weighting which permits the use of low accuracy components in the fabrication of the correction DAC. The output of the primary DAC is skewed so that the required correction is always in a single direction, thereby eliminating the need for a constant offset generator. Resistors necessary for bipolar operation are included on the chip, thereby eliminating the need for connection of any external resistors to achieve such operation.

REFERENCES:
patent: 4070665 (1978-01-01), Glennon
patent: 4272760 (1981-06-01), Prazak
patent: 4318085 (1982-03-01), Whiteside
Galalu et al., USSR Ministry of Higher and Specialized Secondary Education Proceedings of Higher Educational Institution Instrument Designing, vol. 18, No. 4, 1975, pp. 47-52.
Rullgard, "IBM Technical Disclosure Bulletin", vol. 10, No. 1, Jun. 1967, pp. 5-6.

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