Analog to digital linearizing apparatus, system and method

Details Analog to digital linearizing apparatus, system and method Analog to digital linearizing apparatus, system and method

1996-11-29

1998-08-11

Young, Brian K.

Coded data generation or conversion

Converter calibration or testing

341155, H03M 110

Patent

active

057933197

ABSTRACT:
An analog to digital conversion apparatus, method and system accepts an analog input signal having analog values ranging from an analog minimum to an analog maximum and converts the analog input signal into a digital signal. The digital signal includes X-bit numbers, where X is an integer greater than one, according to a truncated transfer function, which includes a linear portion of a full-scale transfer function of an analog-to-digital converter. A range of the truncated transfer function is bounded by a truncated maximum number corresponding to the analog maximum and a truncated minimum number corresponding to the analog minimum. The range of the truncated transfer function is set, through a calibration procedure, to be within the full-scale transfer function of the analog-to-digital converter. The digital signal is then either output in X-bit numbers or in corresponding Y-bit numbers, where Y is an integer and Y<X.

REFERENCES:
patent: 4551823 (1985-11-01), Carmichael et al.
Analog-Digital Conversion Handbook, by The Engineering Staff of Analog Devices, Inc. pp. 614-615, 1986.

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