Interpolative D/A converter

Details Interpolative D/A converter Interpolative D/A converter

1986-04-16

1987-03-24

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

H03M 166

Patent

active

046528580

ABSTRACT:
An oversampling type digital-to-analog converter which has a light gradient overload and a high signal-to-noise ratio in spite of a comparatively low sampling frequency.
In a digital-to-analog converter wherein the difference between an oversampled digital input signal and a feedback signal is taken, such differences are integrated, the integral value is quantized to obtain the feedback signal, and part of the feedback signal is used as an analog output signal; a circuit for the quantization is constructed of a circuit which converts the integral value into a digital signal smaller in the number of bits than the digital input signal, and the feedback signal is obtained by integrating the outputs of the quantization circuit by means of a digital integral circuit.

REFERENCES:
patent: 4301446 (1981-11-01), Petit
patent: 4467316 (1984-08-01), Musmann
patent: 4528551 (1985-07-01), Agrawal

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