Intermeshed resistor network for analog to digital conversion

Details Intermeshed resistor network for analog to digital conversion Intermeshed resistor network for analog to digital conversion

1985-02-12

1986-09-16

Miska, Vit W.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1302

Patent

active

046125310

ABSTRACT:
In an A/D converter, a resistive network for producing 2.sup.n different voltage steps. The resistive network includes a coarse relatively high impedance resistive string which is subdivided into 2.sup.x coarse segments. The resistive network also includes a fine relatively high impedance resistive network comprised of a fine resistive element per coarse segment. Each fine resistive element is then subdivided into 2.sup.(n-x) fine sub-segments. In determining the value of an input voltage being sensed, all the coarse segments are used to sense which coarse segments brackets the input voltage. However, only the fine segment in parallel with the "bracketing" coarse resistor is then coupled to comparator means to sense which fine sub-segment brackets the input voltage.

REFERENCES:
patent: 3935569 (1976-01-01), Marcel et al.
patent: 4008468 (1977-02-01), Imhoff et al.
patent: 4099173 (1978-07-01), Zeskind et al.
patent: 4137525 (1979-01-01), Tyrrel
patent: 4447747 (1984-05-01), La Dotin
patent: 4456904 (1984-06-01), van de Grift

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