Analog to digital converter having dynamically controlled non-li

Details Analog to digital converter having dynamically controlled non-li Analog to digital converter having dynamically controlled non-li

1997-03-19

1998-10-27

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341136, H03M 136

Patent

active

058283307

ABSTRACT:
The output of an analog to digital converter is selectively controlled to provide a non-linear response by addition or removal of current from resistors in the ADC reference level resistor ladder so that voltage drops are reduced or increased across selected resistors. In one embodiment a current mirror is employed to remove current at selected nodes of the resistor ladder. Span current and current mirror current can be controlled so that span and the desired non-linearity will track when span is altered.

REFERENCES:
patent: 4839653 (1989-06-01), Devito
patent: 5349389 (1994-09-01), Keller
patent: 5592167 (1997-01-01), Caruso et al.

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