High resolution digital-to-analog converter

Details High resolution digital-to-analog converter High resolution digital-to-analog converter

1980-10-31

1983-10-18

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347CC, 340347M, H03K 1302

Patent

active

044108796

ABSTRACT:
An apparatus and method for expanding the resolution of digital-to-analog converters is described. Two limited resolution digital-to-analog converters are cascaded in such a manner that one converts the low order bits of digital input signal and the other converts the higher order bits. The output of the higher order digital-to-analog converter is applied directly to a summing circuit while the output of the low order digital-to-analog is first passed through an attenuator. When the low order digital-to-analog converter receives all logical ones, a carry is performed to the higher order digital-to-analog converter. The low order analog-to-digital converter is then reset by a successive approximation technique. Operation is essentially the same for borrow operation.

REFERENCES:
patent: 3581304 (1971-05-01), Paradise et al.
patent: 3893102 (1975-07-01), Candy
patent: 3995266 (1976-11-01), Muller et al.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. II-56 to II-59.

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