Analog/digital converter utilizing a single column of analog swi

Communications: electrical – Audible indication – Percussion-type sound producer

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Details

307449, 307361, 340347DA, 340347M, 328119, H03K 1311

Patent

active

043541755

ABSTRACT:
An analog switch for an analog-to-digital converter which permits an analog voltage level to be read from a series resistor ladder network and be compared to an external analog signal by a comparator. The incremental levels of the series resistor ladder network are selected by a tree decoder responsive to the comparator output. The analog switch has two transistors, the first transistor being connected between the resistor ladder network and the comparator and being gated by a second transistor and the tree decoder so that the first transistor may be precharged or accessed by the tree decoder.

REFERENCES:
patent: 4045793 (1977-08-01), Moench

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