Analog-to-digital converters for control loop applications

Details Analog-to-digital converters for control loop applications Analog-to-digital converters for control loop applications

2007-07-31

2007-07-31

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

C341S155000

Reexamination Certificate

active

11284763

ABSTRACT:
An analog-to-digital converter error detector suitable for single-chip control loop applications employs a single comparator determining the difference between an initial input voltage and a reference voltage in one or more conversion iterations, with the difference reduced in nonlinear steps during each conversion iteration based on the ratio between sampling and discharge capacitances. The number of conversion iterations required to reduce the initial input voltage to below the reference voltage is counted as representing the difference, with output codes representing the conversion iteration count having a step size increasing with the count value and selected to reduce downstream processing.

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