Tri-level digital-analog converter and analog-digital converter

Details Tri-level digital-analog converter and analog-digital converter Tri-level digital-analog converter and analog-digital converter

1990-10-18

1992-07-28

Logan, Sharon D.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341143, 341155, H03M 166, H03M 302, H03M 112

Patent

active

051344025

ABSTRACT:
A tri-level digital-analog converter includes a first analog signal generating circuit for generating a first analog signal which corresponds to a "+1" level of a digital input signal, a second analog signal generating circuit for generating a second analog signal which corresponds to a "-1" level of the digital input signal, a third analog signal generating circuit for generating a third analog signal which corresponds to a "0" level of the digital input signal, and a selector coupled to the first, second and third analog signal generating circuits for selectively outputting one of the first, second and third analog signals in response to the digital input signal as an output analog signal. This tri-level digital-analog converter is suited for use in an oversampling analog-digital converter.

REFERENCES:
Matsuya et al., "A 16-bit Oversampling A to D Conversion Technology Using Triple-Integration Noise Shaping," IEEE Journal of Solid-State Circuits, vol. SC-22, No. 6, Dec. 1987, pp. 921-929.

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