Bipolar A/D converter using two comparators

Details Bipolar A/D converter using two comparators Bipolar A/D converter using two comparators

1974-09-19

1976-09-21

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

324 99D, H03K 1306

Patent

active

039822400

ABSTRACT:
Elimination of an inverting amplifier and a video switch, which provide selective polarity reversal to permit usage of unipolar A/D conversion in prior art bipolar A/D converters, for improved economy and performance, is achieved by usage of two comparators, one for comparing positive input signals and one for comparing negative input signals, the output of one of the comparators, at any one time, providing the input to unipolar A/D converter successive approximation logic, and establishing the sign of the result.

REFERENCES:
patent: 3505668 (1970-04-01), Ottesen
patent: 3544993 (1970-12-01), Gabriel
patent: 3657653 (1972-04-01), Wilkinson
patent: 3718923 (1973-02-01), Horwitz et al.

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