Multithreshold converter utilizing reference tracking amplifiers

Details Multithreshold converter utilizing reference tracking amplifiers Multithreshold converter utilizing reference tracking amplifiers

1980-05-16

1982-10-05

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347M, H03K 13175

Patent

active

043530591

ABSTRACT:
A multithreshold A/D converter has primary and secondary quantizing stages. The threshold reference voltages for the secondary quantizing stages are obtained by amplifying a threshold reference voltage step derived from the primary quantizing stage. Since the secondary threshold reference voltages are derived directly from the primary reference voltages the secondary reference voltages will track deviations occurring within the primary quantizing stage. A reference tracking amplifier is utilized to amplify a portion of the primary reference voltage and apply same to the secondary stage. By using monolithic integrated circuit fabrication techniques to identically match the reference tracking amplifier with the error amplifiers of the primary quantizing stages, the secondary threshold reference voltages will also track deviations in the peak error signals conveyed from the primary to the secondary quantizing stages.

REFERENCES:
patent: 3688221 (1972-08-01), Fruhalf
patent: 3860952 (1975-01-01), Tallent et al.
patent: 4083043 (1978-04-01), Breuer

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