Scaled reference analog-to-digital conversion circuitry and meth

Details Scaled reference analog-to-digital conversion circuitry and meth Scaled reference analog-to-digital conversion circuitry and meth

1993-04-12

1994-09-06

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

341155, H03M 118

Patent

active

053452356

ABSTRACT:
Circuitry for converting analog signal voltages to digital values comprises an analog-to-digital (A/D) converter (170) for receiving an analog signal voltage and analog reference voltages and for generating in accordance therewith a first digital value. The circuitry further comprises first and second digital-to-analog (D/A) converters (175, 180) coupled to the A/D converter (170) for providing the analog reference voltages to the A/D converter (170). A controller (120) coupled to the first and second D/A converters (175, 180) and the A/D converter (170) receives the first digital value and generates therefrom at least a second digital value for subsequent transmission to at least one of the first and second D/A converters (175 or 180), in response to which the at least one of the first and second D/A converters (175 or 180) adjusts at least one of the analog reference voltages provided to the A/D converter (170).

REFERENCES:
patent: 5034745 (1991-07-01), Kelly
patent: 5057841 (1991-10-01), Veerhoek et al.

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